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Nondimensionalization

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5598: 5131: 5593:{\displaystyle \left(-{\frac {\hbar ^{2}}{2m}}{\frac {1}{x_{\text{c}}^{2}}}{\frac {d^{2}}{d{\tilde {x}}^{2}}}+{\frac {1}{2}}m\omega ^{2}x_{\text{c}}^{2}{\tilde {x}}^{2}\right){\tilde {\psi }}({\tilde {x}})=E\,{\tilde {\psi }}({\tilde {x}})\Rightarrow \left(-{\frac {d^{2}}{d{\tilde {x}}^{2}}}+{\frac {m^{2}\omega ^{2}x_{\text{c}}^{4}}{\hbar ^{2}}}{\tilde {x}}^{2}\right){\tilde {\psi }}({\tilde {x}})={\frac {2mx_{\text{c}}^{2}E}{\hbar ^{2}}}{\tilde {\psi }}({\tilde {x}}).} 1689: 3527: 1411: 2374: 3462: 4512: 2568: 4695: 6180: 1684:{\displaystyle {\frac {d}{dt}}={\frac {d\tau }{dt}}{\frac {d}{d\tau }}={\frac {1}{t_{\text{c}}}}{\frac {d}{d\tau }}\Rightarrow {\frac {d^{n}}{dt^{n}}}=\left({\frac {d}{dt}}\right)^{n}=\left({\frac {1}{t_{\text{c}}}}{\frac {d}{d\tau }}\right)^{n}={\frac {1}{{t_{\text{c}}}^{n}}}{\frac {d^{n}}{d\tau ^{n}}}.} 648: 5916: 172:
are practical examples of nondimensionalization occurring in everyday life. Measuring devices are calibrated relative to some known unit. Subsequent measurements are made relative to this standard. Then, the absolute value of the measurement is recovered by scaling with respect to the standard.
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A variety of systems can be approximated as either first or second order systems. These include mechanical, electrical, fluidic, caloric, and torsional systems. This is because the fundamental physical quantities involved within each of these examples are related through first and second order
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Measurements made relative to an intrinsic property of a system will apply to other systems which also have the same intrinsic property. It also allows one to compare a common property of different implementations of the same system. Nondimensionalization determines in a systematic manner the
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The first variable corresponds to the maximum charge stored in the circuit. The resonance frequency is given by the reciprocal of the characteristic time. The last expression is the linewidth of the system. The Ω can be considered as a normalized forcing function frequency.
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The number of free parameters in a nondimensionalized form of a system increases with its order. For this reason, nondimensionalization is rarely used for higher order differential equations. The need for this procedure has also been reduced with the advent of
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Many illustrative examples of nondimensionalization originate from simplifying differential equations. This is because a large body of physical problems can be formulated in terms of differential equations. Consider the following:
876: 3807: 3003: 1276: 1212: 5641: 2035: 4724: 2704: 1299: 2152: 5969: 1824: 655: 2369:{\displaystyle a{\frac {x_{\text{c}}}{{t_{\text{c}}}^{2}}}{\frac {d^{2}\chi }{d\tau ^{2}}}+b{\frac {x_{\text{c}}}{t_{\text{c}}}}{\frac {d\chi }{d\tau }}+cx_{\text{c}}\chi =Af(\tau t_{\text{c}})=AF(\tau ).} 4956: 489: 1092: 2822: 216:). In fact, nondimensionalization can suggest the parameters which should be used for analyzing a system. However, it is necessary to start with an equation that describes the system appropriately. 4999: 3457:{\displaystyle a_{n}{\frac {d^{n}}{dt^{n}}}x(t)+a_{n-1}{\frac {d^{n-1}}{dt^{n-1}}}x(t)+\ldots +a_{1}{\frac {d}{dt}}x(t)+a_{0}x(t)=\sum _{k=0}^{n}a_{k}{\big (}{\frac {d}{dt}}{\big )}^{k}x(t)=Af(t).} 4507:{\displaystyle L{\frac {d^{2}Q}{dt^{2}}}+R{\frac {dQ}{dt}}+{\frac {Q}{C}}=V_{0}\cos(\omega t)\Rightarrow {\frac {d^{2}\chi }{d\tau ^{2}}}+2\zeta {\frac {d\chi }{d\tau }}+\chi =\cos(\Omega \tau )} 158:
Although nondimensionalization is well adapted for these problems, it is not restricted to them. An example of a non-differential-equation application is dimensional analysis; another example is
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If the differential equation only contains real (not complex) coefficients, then the properties of such a system behaves as a mixture of first and second order systems only. This is because the
2688: 908: 142: 3877: 2563:{\displaystyle {\frac {d^{2}\chi }{d\tau ^{2}}}+t_{\text{c}}{\frac {b}{a}}{\frac {d\chi }{d\tau }}+{t_{\text{c}}}^{2}{\frac {c}{a}}\chi ={\frac {A{t_{\text{c}}}^{2}}{ax_{\text{c}}}}F(\tau ).} 4130: 4018: 3983: 2378:
This new equation is not dimensionless, although all the variables with units are isolated in the coefficients. Dividing by the coefficient of the highest ordered term, the equation becomes
2643: 1949: 414: 3038: 5636: 4994: 4690:{\displaystyle Q=\chi x_{\text{c}},\ t=\tau t_{\text{c}},\ \ x_{\text{c}}=CV_{0},\ t_{\text{c}}={\sqrt {LC}},\ 2\zeta =R{\sqrt {\frac {C}{L}}},\ \Omega =t_{\text{c}}\omega .} 3497:
pairs. Therefore, understanding how nondimensionalization applies to first and second ordered systems allows the properties of higher order systems to be determined through
5998: 6175:{\displaystyle {\frac {\hbar \omega }{2}}\left(-{\frac {d^{2}}{d{\tilde {x}}^{2}}}+{\tilde {x}}^{2}\right){\tilde {\psi }}({\tilde {x}})=E{\tilde {\psi }}({\tilde {x}}).} 244:
The last three steps are usually specific to the problem where nondimensionalization is applied. However, almost all systems require the first two steps to be performed.
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when nondimensionalizing. If differential operators are needed to describe the original system, their scaled counterparts become dimensionless differential operators.
1216: 1866: 1155: 789: 322: 296: 1728: 643:{\displaystyle a{\frac {x_{\text{c}}}{t_{\text{c}}}}{\frac {d\chi }{d\tau }}+bx_{\text{c}}\chi =Af(\tau t_{\text{c}})\ {\stackrel {\mathrm {def} }{=}}\ AF(\tau ).} 152: 3665: 3643: 3621: 3599: 3577: 3555: 1968: 1846: 147: 2694:
Both substitutions are valid. However, for pedagogical reasons, the latter substitution is used for second order systems. Choosing this substitution allows
5911:{\displaystyle \left(-{\frac {d^{2}}{d{\tilde {x}}^{2}}}+{\tilde {x}}^{2}\right){\tilde {\psi }}({\tilde {x}})={\tilde {E}}{\tilde {\psi }}({\tilde {x}}),} 3534:
Suppose we have a mass attached to a spring and a damper, which in turn are attached to a wall, and a force acting on the mass along the same line. Define
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of a system to use, without relying heavily on prior knowledge of the system's intrinsic properties (one should not confuse characteristic units of a
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has units of inverse length. To nondimensionalize this, it must be rewritten as a function of a dimensionless variable. To do this, we substitute
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energy of the harmonic oscillator. Usually, the energy term is not made dimensionless as we are interested in determining the energies of the
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Choose judiciously the definition of the characteristic unit for each variable so that the coefficients of as many terms as possible become 1;
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so that the coefficients become normalized. Since there are two free parameters, at most only two coefficients can be made to equal unity.
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A subscript 'c' added to a quantity's variable name is used to denote the characteristic unit used to scale that quantity. For example, if
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Hans Petter Langtangen, Geir K. Pedersen, Center for Biomedical Computing, Simula Research Laboratory and Department of Informatics,
3947: 75:, in order to suggest that certain quantities are better measured relative to some appropriate unit. These units refer to quantities 5741:{\displaystyle {\frac {m^{2}\omega ^{2}x_{\text{c}}^{4}}{\hbar ^{2}}}=1\Rightarrow x_{\text{c}}={\sqrt {\frac {\hbar }{m\omega }}}.} 1884: 349: 4864:{\displaystyle \left(-{\frac {\hbar ^{2}}{2m}}{\frac {d^{2}}{dx^{2}}}+{\frac {1}{2}}m\omega ^{2}x^{2}\right)\psi (x)=E\psi (x).} 2810:{\displaystyle 1={\frac {At_{\text{c}}^{2}}{ax_{\text{c}}}}={\frac {A}{cx_{\text{c}}}}\Rightarrow x_{\text{c}}={\frac {A}{c}}.} 1399:{\displaystyle t=\tau t_{\text{c}}\Rightarrow dt=t_{\text{c}}d\tau \Rightarrow {\frac {d\tau }{dt}}={\frac {1}{t_{\text{c}}}}.} 433: 304:– represents the dependent variable – can be mass, voltage, or any measurable quantity. Its nondimensionalized counterpart is 260:". However, they are generally chosen so that it is convenient and intuitive to use for the problem at hand. For example, if " 1009:{\displaystyle {\frac {At_{\text{c}}}{ax_{\text{c}}}}={\frac {A}{bx_{\text{c}}}}=1\Rightarrow x_{\text{c}}={\frac {A}{b}}.} 6364: 102:, nondimensionalization can recover these values. The technique is especially useful for systems that can be described by 80: 2651: 762:{\displaystyle {\frac {d\chi }{d\tau }}+{\frac {bt_{\text{c}}}{a}}\chi ={\frac {At_{\text{c}}}{ax_{\text{c}}}}F(\tau ).} 90:
Nondimensionalization can also recover characteristic properties of a system. For example, if a system has an intrinsic
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represent quantities with units. To scale these two variables, assume there are two intrinsic units of measurement
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in an equation to intensive quantities, since the latter procedure results in variables that still carry units.
5119:{\displaystyle \psi (x)=\psi ({\tilde {x}}x_{\text{c}})=\psi (x(x_{\text{c}}))={\tilde {\psi }}({\tilde {x}}).} 652:
The coefficient of the highest ordered term is in front of the first derivative term. Dividing by this gives
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The final dimensionless equation in this case becomes completely independent of any parameters with units:
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Replace each of them with a quantity scaled relative to a characteristic unit of measure to be determined;
4256:{\displaystyle Q=\chi x_{\text{c}},\ t=\tau t_{\text{c}},\ x_{\text{c}}=CV_{0},\ t_{\text{c}}=RC,\ F=V.} 4120:{\displaystyle R{\frac {dQ}{dt}}+{\frac {Q}{C}}=V(t)\Rightarrow {\frac {d\chi }{d\tau }}+\chi =F(\tau )} 343: 103: 38: 278:– represents the independent variable – usually a time quantity. Its nondimensionalized counterpart is 6324: 6199:, the analogous process is usually dividing a difference (a distance) by a scale factor (a measure of 5605: 4970: 1102:
Suppose for simplicity that a certain system is characterized by two variables – a dependent variable
6241: 6223: 3506: 192:. For such a system, it is advantageous to perform calculations relating to the swinging relative to 169: 58: 34: 3032: 50: 5974: 6347: 6335: 6325:
Analysis of differential equation models in biology: a case study for clover meristem populations
6251: 6215: 3482: 115: 3132:{\displaystyle {\frac {d^{2}\chi }{d\tau ^{2}}}+2\zeta {\frac {d\chi }{d\tau }}+\chi =F(\tau ).} 3494: 127: 123: 42: 6008:. Rearranging the first equation, the familiar equation for the harmonic oscillator becomes 4967:
is some characteristic length of this system. This gives us a dimensionless wave function
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The dimensionless differential operators with respect to the independent variable becomes
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Divide through by the coefficient of the highest order polynomial or derivative term;
209: 111: 99: 871:{\displaystyle {\frac {bt_{\text{c}}}{a}}=1\Rightarrow t_{\text{c}}={\frac {a}{b}}.} 76: 6271: 6001: 4874: 4013: 17: 3802:{\displaystyle m{\frac {d^{2}x}{dt^{2}}}+B{\frac {dx}{dt}}+kx=F_{0}\cos(\omega t)} 3526: 2998:{\displaystyle 2\zeta \ {\stackrel {\mathrm {def} }{=}}\ {\frac {b}{\sqrt {ac}}}.} 196:. In some sense, this is normalizing the measurement with respect to the period. 6256: 3490: 54: 3150:
th order linear differential equation with constant coefficients has the form:
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The factor 2 is present so that the solutions can be parameterized in terms of
1271:{\displaystyle \chi ={\frac {x}{x_{\text{c}}}}\Rightarrow x=\chi x_{\text{c}}.} 268:" might be an appropriate symbol to represent the dimensionless mass quantity. 240:
Rewrite the system of equations in terms of their new dimensionless quantities.
6266: 6261: 6196: 4009: 1207:{\displaystyle \tau ={\frac {t}{t_{\text{c}}}}\Rightarrow t=\tau t_{\text{c}}} 342:
As an illustrative example, consider a first order differential equation with
163: 3028: 186: 119: 91: 2030:{\displaystyle t_{\text{c}}={\frac {a}{b}},\ x_{\text{c}}={\frac {A}{b}}.} 2701:
to be determined by normalizing the coefficient of the forcing function:
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To nondimensionalize a system of equations, one must do the following:
6298:"How does non-dimensionalization improve the behavior of ODE solvers?" 3689:, the differential equation that describes the motion of the block is 2147:{\displaystyle a{\frac {d^{2}x}{dt^{2}}}+b{\frac {dx}{dt}}+cx=Af(t).} 95: 62: 6331:
Course notes for Mathematical Modelling and Industrial Mathematics
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in the circuit. The second characteristic unit corresponds to the
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Nondimensionalizing this equation the same way as described under
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There are no restrictions on the variable names used to replace "
6327:(Application of nondimensionalization to a problem in biology). 5964:{\displaystyle E\equiv {\frac {\hbar \omega }{2}}{\tilde {E}}.} 1819:{\displaystyle f(t)=f(\tau t_{\text{c}})=f(t(\tau ))=F(\tau ).} 4951:{\displaystyle {\tilde {x}}\equiv {\frac {x}{x_{\text{c}}}},} 1881:
Consider the differential equation for a first order system:
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The coefficient of the first order term is unitless. Define
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In this article, the following conventions have been used:
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List of dynamical systems and differential equations topics
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units. Nondimensionalization is not the same as converting
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represents probability density that, when integrated over
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corresponds to the distance the block moves per unit force
126:; a more natural pair of characteristic units is mean age/ 27:
Mathematical simplification technique in physical sciences
484:{\displaystyle x=\chi x_{\text{c}},\ t=\tau t_{\text{c}}} 6203:), which yields a dimensionless number, which is called 1872:
Linear differential equations with constant coefficients
1087:{\displaystyle {\frac {d\chi }{d\tau }}+\chi =F(\tau ).} 4265:
The first characteristic unit corresponds to the total
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is made to be dependent on the dimensionless quantity
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Jonathan Evans, Department of Mathematical Sciences,
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or sample standard deviation, respectively, yielding
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Identify all the independent and dependent variables;
3601:= external force or "disturbance" applied to system 3927:{\displaystyle t_{\text{c}}={\sqrt {\frac {m}{k}}}} 3031:of the system. The result of the definition is the 2683:{\displaystyle t_{\text{c}}={\sqrt {\frac {a}{c}}}} 2572:Now it is necessary to determine the quantities of 2169:with their scaled quantities. The equation becomes 6174: 5992: 5963: 5910: 5740: 5630: 5592: 5118: 4988: 4950: 4863: 4689: 4506: 4255: 4119: 3977: 3926: 3871: 3801: 3659: 3637: 3615: 3593: 3571: 3549: 3456: 3131: 2997: 2924: 2809: 2682: 2637: 2562: 2368: 2146: 2029: 1943: 1860: 1840: 1818: 1722: 1683: 1398: 1270: 1206: 1086: 1008: 870: 783: 761: 642: 483: 419:In this equation the independent variable here is 408: 316: 290: 110:. One of the simplest characteristic units is the 4894:, gives a dimensionless probability. Therefore, 3872:{\displaystyle x_{\text{c}}={\frac {F_{0}}{k}}.} 3978:{\displaystyle 2\zeta ={\frac {B}{\sqrt {mk}}}} 1152:respectively, such that these conditions hold: 3815:yields several characteristics of the system: 1953:The derivation of the characteristic units to 153:Differential equations of mathematical physics 3410: 3387: 339:is the characteristic unit used to scale it. 57:units are involved. It is closely related to 8: 148:List of partial differential equation topics 3941:corresponds to the linewidth of the system. 3513:Examples of recovering characteristic units 2638:{\displaystyle t_{\text{c}}={\frac {a}{b}}} 1944:{\displaystyle a{\frac {dx}{dt}}+bx=Af(t).} 409:{\displaystyle a{\frac {dx}{dt}}+bx=Af(t).} 3889:is equal to the period of the oscillations 791:only contains one characteristic variable 106:. One important use is in the analysis of 6155: 6154: 6140: 6139: 6119: 6118: 6104: 6103: 6092: 6081: 6080: 6067: 6056: 6055: 6044: 6038: 6015: 6013: 5979: 5978: 5976: 5947: 5946: 5931: 5923: 5891: 5890: 5876: 5875: 5864: 5863: 5846: 5845: 5831: 5830: 5819: 5808: 5807: 5794: 5783: 5782: 5771: 5765: 5755: 5750:The fully nondimensionalized equation is 5718: 5709: 5688: 5677: 5672: 5662: 5652: 5645: 5643: 5622: 5611: 5610: 5607: 5573: 5572: 5558: 5557: 5549: 5535: 5530: 5517: 5500: 5499: 5485: 5484: 5473: 5462: 5461: 5452: 5441: 5436: 5426: 5416: 5409: 5397: 5386: 5385: 5374: 5368: 5343: 5342: 5328: 5327: 5326: 5306: 5305: 5291: 5290: 5279: 5268: 5267: 5260: 5255: 5245: 5228: 5216: 5205: 5204: 5193: 5187: 5179: 5174: 5165: 5149: 5143: 5133: 5099: 5098: 5084: 5083: 5068: 5040: 5025: 5024: 5001: 4975: 4974: 4972: 4937: 4928: 4914: 4913: 4911: 4817: 4807: 4790: 4778: 4764: 4758: 4742: 4736: 4726: 4717:for the one-dimensional time independent 4675: 4647: 4619: 4610: 4594: 4578: 4559: 4534: 4519: 4457: 4439: 4421: 4414: 4387: 4370: 4347: 4332: 4314: 4307: 4302: 4220: 4204: 4188: 4172: 4147: 4132: 4076: 4048: 4025: 4020: 3960: 3949: 3912: 3903: 3897: 3855: 3849: 3840: 3834: 3775: 3739: 3724: 3706: 3699: 3694: 3652: 3630: 3608: 3586: 3564: 3542: 3530:A mass attached to a spring and a damper. 3415: 3409: 3408: 3392: 3386: 3385: 3379: 3369: 3358: 3333: 3299: 3293: 3253: 3233: 3227: 3215: 3187: 3173: 3167: 3161: 3155: 3085: 3067: 3049: 3042: 3040: 2977: 2959: 2958: 2953: 2951: 2950: 2939: 2878: 2863: 2851: 2833: 2826: 2824: 2794: 2785: 2769: 2756: 2744: 2729: 2724: 2714: 2706: 2668: 2659: 2653: 2625: 2616: 2610: 2536: 2521: 2514: 2509: 2502: 2486: 2480: 2473: 2468: 2444: 2434: 2428: 2412: 2394: 2387: 2385: 2336: 2308: 2278: 2270: 2260: 2254: 2239: 2221: 2214: 2206: 2199: 2194: 2187: 2181: 2176: 2094: 2079: 2061: 2054: 2049: 2014: 2005: 1985: 1976: 1970: 1891: 1886: 1853: 1833: 1765: 1735: 1706: 1669: 1655: 1649: 1641: 1634: 1629: 1623: 1614: 1594: 1586: 1577: 1562: 1543: 1526: 1512: 1506: 1488: 1480: 1471: 1453: 1433: 1415: 1413: 1385: 1376: 1353: 1338: 1316: 1301: 1259: 1235: 1226: 1218: 1198: 1174: 1165: 1157: 1040: 1038: 993: 984: 962: 949: 937: 922: 912: 910: 855: 846: 821: 811: 809: 776: 735: 720: 710: 692: 682: 659: 657: 604: 603: 598: 596: 595: 583: 555: 525: 517: 507: 501: 496: 475: 450: 435: 356: 351: 309: 283: 79:to the system, rather than units such as 3812: 3671:Suppose the applied force is a sinusoid 3525: 6289: 6018: 5934: 5721: 5685: 5546: 5449: 5146: 5128:The differential equation then becomes 4739: 2590:Determination of characteristic units 7: 6302:Computational Science Stack Exchange 2690:the zeroth order term is normalized. 1280:These equations are used to replace 902: 801: 2645:the first order term is normalized. 2044:A second order system has the form 4665: 4495: 2966: 2963: 2960: 2819:The differential equation becomes 611: 608: 605: 49:. This technique can simplify and 33:is the partial or full removal of 25: 6343:Scaling of Differential Equations 6000:is in fact (coincidentally) the 5631:{\displaystyle {\tilde {x}}^{2}} 4989:{\displaystyle {\tilde {\psi }}} 3557:= displacement from equilibrium 1828:Hence, the new forcing function 423:, and the dependent variable is 264:" represented mass, the letter " 4277:Second-order series RLC circuit 491:. This results in the equation 6166: 6160: 6151: 6145: 6130: 6124: 6115: 6109: 6086: 6061: 5984: 5952: 5902: 5896: 5887: 5881: 5869: 5857: 5851: 5842: 5836: 5813: 5788: 5702: 5616: 5584: 5578: 5569: 5563: 5511: 5505: 5496: 5490: 5467: 5391: 5357: 5354: 5348: 5339: 5333: 5317: 5311: 5302: 5296: 5273: 5210: 5110: 5104: 5095: 5089: 5077: 5074: 5061: 5055: 5046: 5030: 5021: 5012: 5006: 4980: 4919: 4855: 4849: 4837: 4831: 4501: 4492: 4411: 4408: 4399: 4281:For a series configuration of 4114: 4108: 4073: 4070: 4064: 3796: 3787: 3645:= damping constant of dashpot 3448: 3442: 3430: 3424: 3348: 3342: 3323: 3317: 3277: 3271: 3205: 3199: 3123: 3117: 2916: 2910: 2778: 2554: 2548: 2360: 2354: 2342: 2326: 2138: 2132: 1935: 1929: 1810: 1804: 1795: 1792: 1786: 1780: 1771: 1755: 1746: 1740: 1717: 1711: 1503: 1350: 1322: 1243: 1182: 1078: 1072: 977: 839: 753: 747: 634: 628: 589: 573: 400: 394: 185:is swinging with a particular 1: 6210:Most often, this is dividing 5602:To make the term in front of 4004:First-order series RC circuit 3033:universal oscillator equation 71:is used interchangeably with 5993:{\displaystyle {\tilde {E}}} 4297:is the charge in the system 3937:The dimensionless variable 2 3882:The characteristic variable 1106:and an independent variable 771:The coefficient in front of 4719:quantum harmonic oscillator 4709:Quantum harmonic oscillator 3667:= force constant of spring 1961: 1955: 220:Nondimensionalization steps 130:, which correspond to base 6381: 6191:Normalization (statistics) 6188: 4873:The modulus square of the 3813:§ Second order system 1296:Consider the relationship 3487:characteristic polynomial 122:of a system experiencing 114:of a system experiencing 47:substitution of variables 5971:The factor in front of 4514:with the substitutions 3999:Electrical oscillations 3522:Mechanical oscillations 1144:with the same units as 6201:statistical dispersion 6176: 5994: 5965: 5918:where we have defined 5912: 5742: 5632: 5594: 5120: 4990: 4952: 4865: 4691: 4508: 4257: 4121: 3979: 3928: 3873: 3803: 3661: 3639: 3617: 3595: 3573: 3551: 3531: 3458: 3374: 3133: 2999: 2926: 2811: 2684: 2639: 2594:Consider the variable 2564: 2370: 2161:Replace the variables 2148: 2031: 1945: 1862: 1842: 1820: 1724: 1685: 1400: 1292:Differential operators 1272: 1208: 1088: 1010: 872: 785: 763: 644: 485: 410: 318: 292: 104:differential equations 6224:studentized residuals 6177: 5995: 5966: 5913: 5743: 5633: 5595: 5121: 4991: 4953: 4866: 4692: 4509: 4258: 4122: 3980: 3929: 3874: 3804: 3662: 3640: 3618: 3596: 3574: 3552: 3529: 3459: 3354: 3134: 3027:is also known as the 3000: 2927: 2812: 2685: 2640: 2565: 2371: 2149: 2032: 1965:for this system gave 1946: 1863: 1861:{\displaystyle \tau } 1843: 1821: 1725: 1686: 1401: 1273: 1209: 1089: 1011: 873: 786: 784:{\displaystyle \chi } 764: 645: 486: 411: 344:constant coefficients 319: 317:{\displaystyle \chi } 293: 291:{\displaystyle \tau } 73:nondimensionalization 31:Nondimensionalization 6365:Dimensional analysis 6242:Dimensionless number 6237:Buckingham π theorem 6012: 5975: 5922: 5754: 5642: 5606: 5132: 5000: 4971: 4910: 4725: 4715:Schrödinger equation 4518: 4301: 4131: 4019: 3948: 3896: 3833: 3693: 3651: 3629: 3623:= mass of the block 3607: 3585: 3563: 3541: 3507:symbolic computation 3154: 3142:Higher order systems 3039: 2938: 2823: 2705: 2652: 2609: 2384: 2175: 2048: 1969: 1885: 1852: 1832: 1734: 1723:{\displaystyle f(t)} 1705: 1412: 1300: 1217: 1156: 1037: 909: 808: 775: 656: 495: 434: 350: 332:is a quantity, then 308: 282: 202:characteristic units 134:rather than base 2. 118:, or conversely the 85:extensive quantities 59:dimensional analysis 6212:errors or residuals 6185:Statistical analogs 5682: 5638:dimensionless, set 5540: 5446: 5265: 5184: 4127:with substitutions 3819:The intrinsic unit 2734: 2040:Second order system 92:resonance frequency 61:. In some physical 43:physical quantities 35:physical dimensions 18:Characteristic unit 6348:University of Oslo 6339:. (see Chapter 3). 6336:University of Bath 6252:System equivalence 6216:standard deviation 6172: 5990: 5961: 5908: 5738: 5668: 5628: 5590: 5526: 5432: 5251: 5170: 5116: 4986: 4948: 4861: 4687: 4504: 4253: 4117: 3975: 3924: 3869: 3799: 3657: 3635: 3613: 3591: 3569: 3547: 3532: 3474:) is known as the 3454: 3129: 2995: 2922: 2807: 2720: 2680: 2635: 2560: 2366: 2144: 2027: 1941: 1877:First order system 1858: 1838: 1816: 1720: 1698:If a system has a 1681: 1396: 1268: 1204: 1084: 1006: 868: 781: 759: 640: 481: 406: 314: 288: 116:exponential growth 6272:Logistic equation 6163: 6148: 6127: 6112: 6089: 6074: 6064: 6028: 5987: 5955: 5944: 5899: 5884: 5872: 5854: 5839: 5816: 5801: 5791: 5733: 5732: 5712: 5694: 5675: 5619: 5581: 5566: 5555: 5533: 5508: 5493: 5470: 5458: 5439: 5404: 5394: 5351: 5336: 5314: 5299: 5276: 5258: 5236: 5223: 5213: 5185: 5177: 5163: 5107: 5092: 5071: 5043: 5033: 4983: 4943: 4940: 4922: 4798: 4785: 4756: 4704:Quantum mechanics 4678: 4664: 4657: 4656: 4634: 4627: 4613: 4605: 4581: 4573: 4570: 4562: 4545: 4537: 4475: 4446: 4378: 4365: 4339: 4293:components where 4240: 4223: 4215: 4191: 4183: 4175: 4158: 4150: 4094: 4056: 4043: 3973: 3972: 3922: 3921: 3906: 3864: 3843: 3757: 3731: 3660:{\displaystyle k} 3638:{\displaystyle B} 3616:{\displaystyle m} 3594:{\displaystyle f} 3572:{\displaystyle t} 3550:{\displaystyle x} 3495:complex conjugate 3405: 3312: 3266: 3194: 3103: 3074: 2990: 2989: 2976: 2971: 2949: 2896: 2876: 2875: 2858: 2802: 2788: 2776: 2772: 2751: 2747: 2727: 2678: 2677: 2662: 2633: 2619: 2543: 2539: 2517: 2494: 2476: 2462: 2442: 2431: 2419: 2339: 2311: 2296: 2276: 2273: 2263: 2246: 2212: 2202: 2190: 2157:Substitution step 2112: 2086: 2022: 2008: 2000: 1993: 1979: 1909: 1841:{\displaystyle F} 1768: 1676: 1647: 1637: 1607: 1592: 1589: 1556: 1533: 1501: 1486: 1483: 1466: 1451: 1428: 1391: 1388: 1371: 1341: 1319: 1262: 1241: 1238: 1201: 1180: 1177: 1058: 1030: 1029: 1001: 987: 969: 965: 944: 940: 925: 892: 891: 863: 849: 831: 824: 742: 738: 723: 702: 695: 677: 621: 616: 594: 586: 558: 543: 523: 520: 510: 478: 461: 453: 374: 170:Measuring devices 124:exponential decay 16:(Redirected from 6372: 6312: 6311: 6309: 6308: 6294: 6181: 6179: 6178: 6173: 6165: 6164: 6156: 6150: 6149: 6141: 6129: 6128: 6120: 6114: 6113: 6105: 6102: 6098: 6097: 6096: 6091: 6090: 6082: 6075: 6073: 6072: 6071: 6066: 6065: 6057: 6049: 6048: 6039: 6029: 6024: 6016: 5999: 5997: 5996: 5991: 5989: 5988: 5980: 5970: 5968: 5967: 5962: 5957: 5956: 5948: 5945: 5940: 5932: 5917: 5915: 5914: 5909: 5901: 5900: 5892: 5886: 5885: 5877: 5874: 5873: 5865: 5856: 5855: 5847: 5841: 5840: 5832: 5829: 5825: 5824: 5823: 5818: 5817: 5809: 5802: 5800: 5799: 5798: 5793: 5792: 5784: 5776: 5775: 5766: 5747: 5745: 5744: 5739: 5734: 5731: 5720: 5719: 5714: 5713: 5710: 5695: 5693: 5692: 5683: 5681: 5676: 5673: 5667: 5666: 5657: 5656: 5646: 5637: 5635: 5634: 5629: 5627: 5626: 5621: 5620: 5612: 5599: 5597: 5596: 5591: 5583: 5582: 5574: 5568: 5567: 5559: 5556: 5554: 5553: 5544: 5539: 5534: 5531: 5518: 5510: 5509: 5501: 5495: 5494: 5486: 5483: 5479: 5478: 5477: 5472: 5471: 5463: 5459: 5457: 5456: 5447: 5445: 5440: 5437: 5431: 5430: 5421: 5420: 5410: 5405: 5403: 5402: 5401: 5396: 5395: 5387: 5379: 5378: 5369: 5353: 5352: 5344: 5338: 5337: 5329: 5316: 5315: 5307: 5301: 5300: 5292: 5289: 5285: 5284: 5283: 5278: 5277: 5269: 5264: 5259: 5256: 5250: 5249: 5237: 5229: 5224: 5222: 5221: 5220: 5215: 5214: 5206: 5198: 5197: 5188: 5186: 5183: 5178: 5175: 5166: 5164: 5162: 5154: 5153: 5144: 5125: 5123: 5122: 5117: 5109: 5108: 5100: 5094: 5093: 5085: 5073: 5072: 5069: 5045: 5044: 5041: 5035: 5034: 5026: 4995: 4993: 4992: 4987: 4985: 4984: 4976: 4966: 4957: 4955: 4954: 4949: 4944: 4942: 4941: 4938: 4929: 4924: 4923: 4915: 4905: 4893: 4887: 4870: 4868: 4867: 4862: 4827: 4823: 4822: 4821: 4812: 4811: 4799: 4791: 4786: 4784: 4783: 4782: 4769: 4768: 4759: 4757: 4755: 4747: 4746: 4737: 4696: 4694: 4693: 4688: 4680: 4679: 4676: 4662: 4658: 4649: 4648: 4632: 4628: 4620: 4615: 4614: 4611: 4603: 4599: 4598: 4583: 4582: 4579: 4571: 4568: 4564: 4563: 4560: 4543: 4539: 4538: 4535: 4513: 4511: 4510: 4505: 4476: 4474: 4466: 4458: 4447: 4445: 4444: 4443: 4430: 4426: 4425: 4415: 4392: 4391: 4379: 4371: 4366: 4364: 4356: 4348: 4340: 4338: 4337: 4336: 4323: 4319: 4318: 4308: 4273:for the system. 4262: 4260: 4259: 4254: 4238: 4225: 4224: 4221: 4213: 4209: 4208: 4193: 4192: 4189: 4181: 4177: 4176: 4173: 4156: 4152: 4151: 4148: 4126: 4124: 4123: 4118: 4095: 4093: 4085: 4077: 4057: 4049: 4044: 4042: 4034: 4026: 3984: 3982: 3981: 3976: 3974: 3965: 3961: 3933: 3931: 3930: 3925: 3923: 3914: 3913: 3908: 3907: 3904: 3878: 3876: 3875: 3870: 3865: 3860: 3859: 3850: 3845: 3844: 3841: 3808: 3806: 3805: 3800: 3780: 3779: 3758: 3756: 3748: 3740: 3732: 3730: 3729: 3728: 3715: 3711: 3710: 3700: 3688: 3666: 3664: 3663: 3658: 3644: 3642: 3641: 3636: 3622: 3620: 3619: 3614: 3600: 3598: 3597: 3592: 3578: 3576: 3575: 3570: 3556: 3554: 3553: 3548: 3476:forcing function 3463: 3461: 3460: 3455: 3420: 3419: 3414: 3413: 3406: 3404: 3393: 3391: 3390: 3384: 3383: 3373: 3368: 3338: 3337: 3313: 3311: 3300: 3298: 3297: 3267: 3265: 3264: 3263: 3244: 3243: 3228: 3226: 3225: 3195: 3193: 3192: 3191: 3178: 3177: 3168: 3166: 3165: 3138: 3136: 3135: 3130: 3104: 3102: 3094: 3086: 3075: 3073: 3072: 3071: 3058: 3054: 3053: 3043: 3015:is known as the 3004: 3002: 3001: 2996: 2991: 2982: 2978: 2974: 2973: 2972: 2970: 2969: 2957: 2952: 2947: 2931: 2929: 2928: 2923: 2897: 2895: 2887: 2879: 2877: 2868: 2864: 2859: 2857: 2856: 2855: 2842: 2838: 2837: 2827: 2816: 2814: 2813: 2808: 2803: 2795: 2790: 2789: 2786: 2777: 2775: 2774: 2773: 2770: 2757: 2752: 2750: 2749: 2748: 2745: 2735: 2733: 2728: 2725: 2715: 2689: 2687: 2686: 2681: 2679: 2670: 2669: 2664: 2663: 2660: 2644: 2642: 2641: 2636: 2634: 2626: 2621: 2620: 2617: 2569: 2567: 2566: 2561: 2544: 2542: 2541: 2540: 2537: 2527: 2526: 2525: 2520: 2519: 2518: 2515: 2503: 2495: 2487: 2485: 2484: 2479: 2478: 2477: 2474: 2463: 2461: 2453: 2445: 2443: 2435: 2433: 2432: 2429: 2420: 2418: 2417: 2416: 2403: 2399: 2398: 2388: 2375: 2373: 2372: 2367: 2341: 2340: 2337: 2313: 2312: 2309: 2297: 2295: 2287: 2279: 2277: 2275: 2274: 2271: 2265: 2264: 2261: 2255: 2247: 2245: 2244: 2243: 2230: 2226: 2225: 2215: 2213: 2211: 2210: 2205: 2204: 2203: 2200: 2192: 2191: 2188: 2182: 2153: 2151: 2150: 2145: 2113: 2111: 2103: 2095: 2087: 2085: 2084: 2083: 2070: 2066: 2065: 2055: 2036: 2034: 2033: 2028: 2023: 2015: 2010: 2009: 2006: 1998: 1994: 1986: 1981: 1980: 1977: 1950: 1948: 1947: 1942: 1910: 1908: 1900: 1892: 1867: 1865: 1864: 1859: 1847: 1845: 1844: 1839: 1825: 1823: 1822: 1817: 1770: 1769: 1766: 1729: 1727: 1726: 1721: 1700:forcing function 1694:Forcing function 1690: 1688: 1687: 1682: 1677: 1675: 1674: 1673: 1660: 1659: 1650: 1648: 1646: 1645: 1640: 1639: 1638: 1635: 1624: 1619: 1618: 1613: 1609: 1608: 1606: 1595: 1593: 1591: 1590: 1587: 1578: 1567: 1566: 1561: 1557: 1555: 1544: 1534: 1532: 1531: 1530: 1517: 1516: 1507: 1502: 1500: 1489: 1487: 1485: 1484: 1481: 1472: 1467: 1465: 1454: 1452: 1450: 1442: 1434: 1429: 1427: 1416: 1405: 1403: 1402: 1397: 1392: 1390: 1389: 1386: 1377: 1372: 1370: 1362: 1354: 1343: 1342: 1339: 1321: 1320: 1317: 1277: 1275: 1274: 1269: 1264: 1263: 1260: 1242: 1240: 1239: 1236: 1227: 1213: 1211: 1210: 1205: 1203: 1202: 1199: 1181: 1179: 1178: 1175: 1166: 1093: 1091: 1090: 1085: 1059: 1057: 1049: 1041: 1024: 1015: 1013: 1012: 1007: 1002: 994: 989: 988: 985: 970: 968: 967: 966: 963: 950: 945: 943: 942: 941: 938: 928: 927: 926: 923: 913: 903: 886: 877: 875: 874: 869: 864: 856: 851: 850: 847: 832: 827: 826: 825: 822: 812: 802: 790: 788: 787: 782: 768: 766: 765: 760: 743: 741: 740: 739: 736: 726: 725: 724: 721: 711: 703: 698: 697: 696: 693: 683: 678: 676: 668: 660: 649: 647: 646: 641: 619: 618: 617: 615: 614: 602: 597: 592: 588: 587: 584: 560: 559: 556: 544: 542: 534: 526: 524: 522: 521: 518: 512: 511: 508: 502: 490: 488: 487: 482: 480: 479: 476: 459: 455: 454: 451: 415: 413: 412: 407: 375: 373: 365: 357: 323: 321: 320: 315: 297: 295: 294: 289: 21: 6380: 6379: 6375: 6374: 6373: 6371: 6370: 6369: 6355: 6354: 6321: 6316: 6315: 6306: 6304: 6296: 6295: 6291: 6286: 6281: 6277:Per-unit system 6232: 6220:standard scores 6193: 6187: 6079: 6054: 6050: 6040: 6034: 6030: 6017: 6010: 6009: 5973: 5972: 5933: 5920: 5919: 5806: 5781: 5777: 5767: 5761: 5757: 5752: 5751: 5724: 5705: 5684: 5658: 5648: 5647: 5640: 5639: 5609: 5604: 5603: 5545: 5519: 5460: 5448: 5422: 5412: 5411: 5384: 5380: 5370: 5364: 5360: 5266: 5241: 5203: 5199: 5189: 5155: 5145: 5139: 5135: 5130: 5129: 5064: 5036: 4998: 4997: 4969: 4968: 4965: 4959: 4933: 4908: 4907: 4895: 4889: 4877: 4813: 4803: 4774: 4770: 4760: 4748: 4738: 4732: 4728: 4723: 4722: 4711: 4706: 4671: 4606: 4590: 4574: 4555: 4530: 4516: 4515: 4467: 4459: 4435: 4431: 4417: 4416: 4383: 4357: 4349: 4328: 4324: 4310: 4309: 4299: 4298: 4279: 4216: 4200: 4184: 4168: 4143: 4129: 4128: 4086: 4078: 4035: 4027: 4017: 4016: 4006: 4001: 3946: 3945: 3899: 3894: 3893: 3888: 3851: 3836: 3831: 3830: 3825: 3771: 3749: 3741: 3720: 3716: 3702: 3701: 3691: 3690: 3682: 3672: 3649: 3648: 3627: 3626: 3605: 3604: 3583: 3582: 3561: 3560: 3539: 3538: 3524: 3515: 3407: 3397: 3375: 3329: 3304: 3289: 3249: 3245: 3229: 3211: 3183: 3179: 3169: 3157: 3152: 3151: 3144: 3095: 3087: 3063: 3059: 3045: 3044: 3037: 3036: 3021:control systems 2936: 2935: 2888: 2880: 2847: 2843: 2829: 2828: 2821: 2820: 2781: 2765: 2761: 2740: 2736: 2716: 2703: 2702: 2700: 2655: 2650: 2649: 2612: 2607: 2606: 2600: 2592: 2585: 2578: 2532: 2528: 2510: 2508: 2504: 2469: 2467: 2454: 2446: 2424: 2408: 2404: 2390: 2389: 2382: 2381: 2332: 2304: 2288: 2280: 2266: 2256: 2235: 2231: 2217: 2216: 2195: 2193: 2183: 2173: 2172: 2159: 2104: 2096: 2075: 2071: 2057: 2056: 2046: 2045: 2042: 2001: 1972: 1967: 1966: 1901: 1893: 1883: 1882: 1879: 1874: 1850: 1849: 1830: 1829: 1761: 1732: 1731: 1703: 1702: 1696: 1665: 1661: 1651: 1630: 1628: 1599: 1582: 1576: 1572: 1571: 1548: 1539: 1538: 1522: 1518: 1508: 1493: 1476: 1458: 1443: 1435: 1420: 1410: 1409: 1381: 1363: 1355: 1334: 1312: 1298: 1297: 1294: 1255: 1231: 1215: 1214: 1194: 1170: 1154: 1153: 1143: 1136: 1100: 1050: 1042: 1035: 1034: 1022: 980: 958: 954: 933: 929: 918: 914: 907: 906: 884: 842: 817: 813: 806: 805: 797: 773: 772: 731: 727: 716: 712: 688: 684: 669: 661: 654: 653: 579: 551: 535: 527: 513: 503: 493: 492: 471: 446: 432: 431: 366: 358: 348: 347: 338: 306: 305: 280: 279: 250: 222: 179: 108:control systems 53:problems where 28: 23: 22: 15: 12: 11: 5: 6378: 6376: 6368: 6367: 6357: 6356: 6353: 6352: 6340: 6328: 6320: 6319:External links 6317: 6314: 6313: 6288: 6287: 6285: 6282: 6280: 6279: 6274: 6269: 6264: 6259: 6254: 6249: 6244: 6239: 6233: 6231: 6228: 6189:Main article: 6186: 6183: 6171: 6168: 6162: 6159: 6153: 6147: 6144: 6138: 6135: 6132: 6126: 6123: 6117: 6111: 6108: 6101: 6095: 6088: 6085: 6078: 6070: 6063: 6060: 6053: 6047: 6043: 6037: 6033: 6027: 6023: 6020: 6006:quantum states 5986: 5983: 5960: 5954: 5951: 5943: 5939: 5936: 5930: 5927: 5907: 5904: 5898: 5895: 5889: 5883: 5880: 5871: 5868: 5862: 5859: 5853: 5850: 5844: 5838: 5835: 5828: 5822: 5815: 5812: 5805: 5797: 5790: 5787: 5780: 5774: 5770: 5764: 5760: 5737: 5730: 5727: 5723: 5717: 5708: 5704: 5701: 5698: 5691: 5687: 5680: 5671: 5665: 5661: 5655: 5651: 5625: 5618: 5615: 5589: 5586: 5580: 5577: 5571: 5565: 5562: 5552: 5548: 5543: 5538: 5529: 5525: 5522: 5516: 5513: 5507: 5504: 5498: 5492: 5489: 5482: 5476: 5469: 5466: 5455: 5451: 5444: 5435: 5429: 5425: 5419: 5415: 5408: 5400: 5393: 5390: 5383: 5377: 5373: 5367: 5363: 5359: 5356: 5350: 5347: 5341: 5335: 5332: 5325: 5322: 5319: 5313: 5310: 5304: 5298: 5295: 5288: 5282: 5275: 5272: 5263: 5254: 5248: 5244: 5240: 5235: 5232: 5227: 5219: 5212: 5209: 5202: 5196: 5192: 5182: 5173: 5169: 5161: 5158: 5152: 5148: 5142: 5138: 5115: 5112: 5106: 5103: 5097: 5091: 5088: 5082: 5079: 5076: 5067: 5063: 5060: 5057: 5054: 5051: 5048: 5039: 5032: 5029: 5023: 5020: 5017: 5014: 5011: 5008: 5005: 4982: 4979: 4963: 4947: 4936: 4932: 4927: 4921: 4918: 4860: 4857: 4854: 4851: 4848: 4845: 4842: 4839: 4836: 4833: 4830: 4826: 4820: 4816: 4810: 4806: 4802: 4797: 4794: 4789: 4781: 4777: 4773: 4767: 4763: 4754: 4751: 4745: 4741: 4735: 4731: 4710: 4707: 4705: 4702: 4686: 4683: 4674: 4670: 4667: 4661: 4655: 4652: 4646: 4643: 4640: 4637: 4631: 4626: 4623: 4618: 4609: 4602: 4597: 4593: 4589: 4586: 4577: 4567: 4558: 4554: 4551: 4548: 4542: 4533: 4529: 4526: 4523: 4503: 4500: 4497: 4494: 4491: 4488: 4485: 4482: 4479: 4473: 4470: 4465: 4462: 4456: 4453: 4450: 4442: 4438: 4434: 4429: 4424: 4420: 4413: 4410: 4407: 4404: 4401: 4398: 4395: 4390: 4386: 4382: 4377: 4374: 4369: 4363: 4360: 4355: 4352: 4346: 4343: 4335: 4331: 4327: 4322: 4317: 4313: 4306: 4278: 4275: 4252: 4249: 4246: 4243: 4237: 4234: 4231: 4228: 4219: 4212: 4207: 4203: 4199: 4196: 4187: 4180: 4171: 4167: 4164: 4161: 4155: 4146: 4142: 4139: 4136: 4116: 4113: 4110: 4107: 4104: 4101: 4098: 4092: 4089: 4084: 4081: 4075: 4072: 4069: 4066: 4063: 4060: 4055: 4052: 4047: 4041: 4038: 4033: 4030: 4024: 4014:voltage source 4012:attached to a 4005: 4002: 4000: 3997: 3996: 3995: 3991:itself is the 3971: 3968: 3964: 3959: 3956: 3953: 3943: 3942: 3920: 3917: 3911: 3902: 3891: 3890: 3886: 3868: 3863: 3858: 3854: 3848: 3839: 3828: 3827: 3823: 3798: 3795: 3792: 3789: 3786: 3783: 3778: 3774: 3770: 3767: 3764: 3761: 3755: 3752: 3747: 3744: 3738: 3735: 3727: 3723: 3719: 3714: 3709: 3705: 3698: 3680: 3669: 3668: 3656: 3646: 3634: 3624: 3612: 3602: 3590: 3580: 3568: 3558: 3546: 3523: 3520: 3514: 3511: 3453: 3450: 3447: 3444: 3441: 3438: 3435: 3432: 3429: 3426: 3423: 3418: 3412: 3403: 3400: 3396: 3389: 3382: 3378: 3372: 3367: 3364: 3361: 3357: 3353: 3350: 3347: 3344: 3341: 3336: 3332: 3328: 3325: 3322: 3319: 3316: 3310: 3307: 3303: 3296: 3292: 3288: 3285: 3282: 3279: 3276: 3273: 3270: 3262: 3259: 3256: 3252: 3248: 3242: 3239: 3236: 3232: 3224: 3221: 3218: 3214: 3210: 3207: 3204: 3201: 3198: 3190: 3186: 3182: 3176: 3172: 3164: 3160: 3143: 3140: 3128: 3125: 3122: 3119: 3116: 3113: 3110: 3107: 3101: 3098: 3093: 3090: 3084: 3081: 3078: 3070: 3066: 3062: 3057: 3052: 3048: 2994: 2988: 2985: 2981: 2968: 2965: 2962: 2956: 2946: 2943: 2921: 2918: 2915: 2912: 2909: 2906: 2903: 2900: 2894: 2891: 2886: 2883: 2874: 2871: 2867: 2862: 2854: 2850: 2846: 2841: 2836: 2832: 2806: 2801: 2798: 2793: 2784: 2780: 2768: 2764: 2760: 2755: 2743: 2739: 2732: 2723: 2719: 2713: 2710: 2698: 2692: 2691: 2676: 2673: 2667: 2658: 2646: 2632: 2629: 2624: 2615: 2598: 2591: 2588: 2583: 2576: 2559: 2556: 2553: 2550: 2547: 2535: 2531: 2524: 2513: 2507: 2501: 2498: 2493: 2490: 2483: 2472: 2466: 2460: 2457: 2452: 2449: 2441: 2438: 2427: 2423: 2415: 2411: 2407: 2402: 2397: 2393: 2365: 2362: 2359: 2356: 2353: 2350: 2347: 2344: 2335: 2331: 2328: 2325: 2322: 2319: 2316: 2307: 2303: 2300: 2294: 2291: 2286: 2283: 2269: 2259: 2253: 2250: 2242: 2238: 2234: 2229: 2224: 2220: 2209: 2198: 2186: 2180: 2158: 2155: 2143: 2140: 2137: 2134: 2131: 2128: 2125: 2122: 2119: 2116: 2110: 2107: 2102: 2099: 2093: 2090: 2082: 2078: 2074: 2069: 2064: 2060: 2053: 2041: 2038: 2026: 2021: 2018: 2013: 2004: 1997: 1992: 1989: 1984: 1975: 1940: 1937: 1934: 1931: 1928: 1925: 1922: 1919: 1916: 1913: 1907: 1904: 1899: 1896: 1890: 1878: 1875: 1873: 1870: 1857: 1837: 1815: 1812: 1809: 1806: 1803: 1800: 1797: 1794: 1791: 1788: 1785: 1782: 1779: 1776: 1773: 1764: 1760: 1757: 1754: 1751: 1748: 1745: 1742: 1739: 1719: 1716: 1713: 1710: 1695: 1692: 1680: 1672: 1668: 1664: 1658: 1654: 1644: 1633: 1627: 1622: 1617: 1612: 1605: 1602: 1598: 1585: 1581: 1575: 1570: 1565: 1560: 1554: 1551: 1547: 1542: 1537: 1529: 1525: 1521: 1515: 1511: 1505: 1499: 1496: 1492: 1479: 1475: 1470: 1464: 1461: 1457: 1449: 1446: 1441: 1438: 1432: 1426: 1423: 1419: 1395: 1384: 1380: 1375: 1369: 1366: 1361: 1358: 1352: 1349: 1346: 1337: 1333: 1330: 1327: 1324: 1315: 1311: 1308: 1305: 1293: 1290: 1267: 1258: 1254: 1251: 1248: 1245: 1234: 1230: 1225: 1222: 1197: 1193: 1190: 1187: 1184: 1173: 1169: 1164: 1161: 1141: 1134: 1099: 1096: 1095: 1094: 1083: 1080: 1077: 1074: 1071: 1068: 1065: 1062: 1056: 1053: 1048: 1045: 1028: 1027: 1018: 1016: 1005: 1000: 997: 992: 983: 979: 976: 973: 961: 957: 953: 948: 936: 932: 921: 917: 901: 900: 899: 898: 890: 889: 880: 878: 867: 862: 859: 854: 845: 841: 838: 835: 830: 820: 816: 800: 799: 795: 780: 769: 758: 755: 752: 749: 746: 734: 730: 719: 715: 709: 706: 701: 691: 687: 681: 675: 672: 667: 664: 650: 639: 636: 633: 630: 627: 624: 613: 610: 607: 601: 591: 582: 578: 575: 572: 569: 566: 563: 554: 550: 547: 541: 538: 533: 530: 516: 506: 500: 474: 470: 467: 464: 458: 449: 445: 442: 439: 428: 405: 402: 399: 396: 393: 390: 387: 384: 381: 378: 372: 369: 364: 361: 355: 336: 326: 325: 313: 299: 287: 249: 246: 242: 241: 238: 235: 232: 229: 221: 218: 178: 175: 156: 155: 150: 145: 45:by a suitable 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 6377: 6366: 6363: 6362: 6360: 6350: 6349: 6344: 6341: 6338: 6337: 6332: 6329: 6326: 6323: 6322: 6318: 6303: 6299: 6293: 6290: 6283: 6278: 6275: 6273: 6270: 6268: 6265: 6263: 6260: 6258: 6255: 6253: 6250: 6248: 6247:Natural units 6245: 6243: 6240: 6238: 6235: 6234: 6229: 6227: 6225: 6221: 6217: 6213: 6209: 6207: 6206:normalization 6202: 6198: 6192: 6184: 6182: 6169: 6157: 6142: 6136: 6133: 6121: 6106: 6099: 6093: 6083: 6076: 6068: 6058: 6051: 6045: 6041: 6035: 6031: 6025: 6021: 6007: 6003: 5981: 5958: 5949: 5941: 5937: 5928: 5925: 5905: 5893: 5878: 5866: 5860: 5848: 5833: 5826: 5820: 5810: 5803: 5795: 5785: 5778: 5772: 5768: 5762: 5758: 5748: 5735: 5728: 5725: 5715: 5706: 5699: 5696: 5689: 5678: 5669: 5663: 5659: 5653: 5649: 5623: 5613: 5600: 5587: 5575: 5560: 5550: 5541: 5536: 5527: 5523: 5520: 5514: 5502: 5487: 5480: 5474: 5464: 5453: 5442: 5433: 5427: 5423: 5417: 5413: 5406: 5398: 5388: 5381: 5375: 5371: 5365: 5361: 5345: 5330: 5323: 5320: 5308: 5293: 5286: 5280: 5270: 5261: 5252: 5246: 5242: 5238: 5233: 5230: 5225: 5217: 5207: 5200: 5194: 5190: 5180: 5171: 5167: 5159: 5156: 5150: 5140: 5136: 5126: 5113: 5101: 5086: 5080: 5065: 5058: 5052: 5049: 5037: 5027: 5018: 5015: 5009: 5003: 4977: 4962: 4945: 4934: 4930: 4925: 4916: 4903: 4899: 4892: 4885: 4881: 4876: 4871: 4858: 4852: 4846: 4843: 4840: 4834: 4828: 4824: 4818: 4814: 4808: 4804: 4800: 4795: 4792: 4787: 4779: 4775: 4771: 4765: 4761: 4752: 4749: 4743: 4733: 4729: 4720: 4716: 4708: 4703: 4701: 4697: 4684: 4681: 4672: 4668: 4659: 4653: 4650: 4644: 4641: 4638: 4635: 4629: 4624: 4621: 4616: 4607: 4600: 4595: 4591: 4587: 4584: 4575: 4565: 4556: 4552: 4549: 4546: 4540: 4531: 4527: 4524: 4521: 4498: 4489: 4486: 4483: 4480: 4477: 4471: 4468: 4463: 4460: 4454: 4451: 4448: 4440: 4436: 4432: 4427: 4422: 4418: 4405: 4402: 4396: 4393: 4388: 4384: 4380: 4375: 4372: 4367: 4361: 4358: 4353: 4350: 4344: 4341: 4333: 4329: 4325: 4320: 4315: 4311: 4304: 4296: 4292: 4288: 4284: 4276: 4274: 4272: 4271:time constant 4268: 4263: 4250: 4247: 4244: 4241: 4235: 4232: 4229: 4226: 4217: 4210: 4205: 4201: 4197: 4194: 4185: 4178: 4169: 4165: 4162: 4159: 4153: 4144: 4140: 4137: 4134: 4111: 4105: 4102: 4099: 4096: 4090: 4087: 4082: 4079: 4067: 4061: 4058: 4053: 4050: 4045: 4039: 4036: 4031: 4028: 4022: 4015: 4011: 4008:For a series 4003: 3998: 3994: 3993:damping ratio 3990: 3987: 3986: 3985: 3969: 3966: 3962: 3957: 3954: 3951: 3940: 3936: 3935: 3934: 3918: 3915: 3909: 3900: 3885: 3881: 3880: 3879: 3866: 3861: 3856: 3852: 3846: 3837: 3822: 3818: 3817: 3816: 3814: 3809: 3793: 3790: 3784: 3781: 3776: 3772: 3768: 3765: 3762: 3759: 3753: 3750: 3745: 3742: 3736: 3733: 3725: 3721: 3717: 3712: 3707: 3703: 3696: 3686: 3679: 3675: 3654: 3647: 3632: 3625: 3610: 3603: 3588: 3581: 3566: 3559: 3544: 3537: 3536: 3535: 3528: 3521: 3519: 3518:derivatives. 3512: 3510: 3508: 3502: 3500: 3499:superposition 3496: 3492: 3488: 3484: 3479: 3477: 3473: 3469: 3466:The function 3464: 3451: 3445: 3439: 3436: 3433: 3427: 3421: 3416: 3401: 3398: 3394: 3380: 3376: 3370: 3365: 3362: 3359: 3355: 3351: 3345: 3339: 3334: 3330: 3326: 3320: 3314: 3308: 3305: 3301: 3294: 3290: 3286: 3283: 3280: 3274: 3268: 3260: 3257: 3254: 3250: 3246: 3240: 3237: 3234: 3230: 3222: 3219: 3216: 3212: 3208: 3202: 3196: 3188: 3184: 3180: 3174: 3170: 3162: 3158: 3149: 3141: 3139: 3126: 3120: 3114: 3111: 3108: 3105: 3099: 3096: 3091: 3088: 3082: 3079: 3076: 3068: 3064: 3060: 3055: 3050: 3046: 3034: 3030: 3026: 3022: 3018: 3017:damping ratio 3014: 3010: 3005: 2992: 2986: 2983: 2979: 2954: 2944: 2941: 2932: 2919: 2913: 2907: 2904: 2901: 2898: 2892: 2889: 2884: 2881: 2872: 2869: 2865: 2860: 2852: 2848: 2844: 2839: 2834: 2830: 2817: 2804: 2799: 2796: 2791: 2782: 2766: 2762: 2758: 2753: 2741: 2737: 2730: 2721: 2717: 2711: 2708: 2697: 2674: 2671: 2665: 2656: 2647: 2630: 2627: 2622: 2613: 2604: 2603: 2602: 2597: 2589: 2587: 2582: 2575: 2570: 2557: 2551: 2545: 2533: 2529: 2522: 2511: 2505: 2499: 2496: 2491: 2488: 2481: 2470: 2464: 2458: 2455: 2450: 2447: 2439: 2436: 2425: 2421: 2413: 2409: 2405: 2400: 2395: 2391: 2379: 2376: 2363: 2357: 2351: 2348: 2345: 2333: 2329: 2323: 2320: 2317: 2314: 2305: 2301: 2298: 2292: 2289: 2284: 2281: 2267: 2257: 2251: 2248: 2240: 2236: 2232: 2227: 2222: 2218: 2207: 2196: 2184: 2178: 2170: 2168: 2164: 2156: 2154: 2141: 2135: 2129: 2126: 2123: 2120: 2117: 2114: 2108: 2105: 2100: 2097: 2091: 2088: 2080: 2076: 2072: 2067: 2062: 2058: 2051: 2039: 2037: 2024: 2019: 2016: 2011: 2002: 1995: 1990: 1987: 1982: 1973: 1964: 1963: 1958: 1957: 1951: 1938: 1932: 1926: 1923: 1920: 1917: 1914: 1911: 1905: 1902: 1897: 1894: 1888: 1876: 1871: 1869: 1855: 1835: 1826: 1813: 1807: 1801: 1798: 1789: 1783: 1777: 1774: 1762: 1758: 1752: 1749: 1743: 1737: 1714: 1708: 1701: 1693: 1691: 1678: 1670: 1666: 1662: 1656: 1652: 1642: 1631: 1625: 1620: 1615: 1610: 1603: 1600: 1596: 1583: 1579: 1573: 1568: 1563: 1558: 1552: 1549: 1545: 1540: 1535: 1527: 1523: 1519: 1513: 1509: 1497: 1494: 1490: 1477: 1473: 1468: 1462: 1459: 1455: 1447: 1444: 1439: 1436: 1430: 1424: 1421: 1417: 1406: 1393: 1382: 1378: 1373: 1367: 1364: 1359: 1356: 1347: 1344: 1335: 1331: 1328: 1325: 1313: 1309: 1306: 1303: 1291: 1289: 1287: 1283: 1278: 1265: 1256: 1252: 1249: 1246: 1232: 1228: 1223: 1220: 1195: 1191: 1188: 1185: 1171: 1167: 1162: 1159: 1151: 1147: 1140: 1133: 1129: 1125: 1121: 1117: 1113: 1109: 1105: 1098:Substitutions 1097: 1081: 1075: 1069: 1066: 1063: 1060: 1054: 1051: 1046: 1043: 1032: 1031: 1026: 1019: 1017: 1003: 998: 995: 990: 981: 974: 971: 959: 955: 951: 946: 934: 930: 919: 915: 905: 904: 897:Subsequently, 896: 895: 894: 893: 888: 881: 879: 865: 860: 857: 852: 843: 836: 833: 828: 818: 814: 804: 803: 794: 778: 770: 756: 750: 744: 732: 728: 717: 713: 707: 704: 699: 689: 685: 679: 673: 670: 665: 662: 651: 637: 631: 625: 622: 599: 580: 576: 570: 567: 564: 561: 552: 548: 545: 539: 536: 531: 528: 514: 504: 498: 472: 468: 465: 462: 456: 447: 443: 440: 437: 429: 426: 422: 418: 417: 416: 403: 397: 391: 388: 385: 382: 379: 376: 370: 367: 362: 359: 353: 345: 340: 335: 331: 311: 303: 300: 285: 277: 274: 273: 272: 269: 267: 263: 259: 255: 247: 245: 239: 236: 233: 230: 227: 226: 225: 219: 217: 215: 211: 210:natural units 207: 203: 197: 195: 191: 188: 184: 176: 174: 171: 167: 165: 161: 160:normalization 154: 151: 149: 146: 144: 141: 140: 139: 135: 133: 129: 128:mean lifetime 125: 121: 117: 113: 112:doubling time 109: 105: 101: 100:time constant 97: 93: 88: 86: 82: 78: 74: 70: 69: 64: 60: 56: 52: 48: 44: 40: 36: 32: 19: 6345: 6333: 6305:. Retrieved 6301: 6292: 6204: 6194: 6002:ground state 5749: 5601: 5127: 4996:defined via 4960: 4901: 4897: 4890: 4883: 4879: 4875:wavefunction 4872: 4712: 4698: 4294: 4290: 4286: 4282: 4280: 4264: 4007: 3988: 3944: 3938: 3892: 3883: 3829: 3820: 3810: 3684: 3677: 3673: 3670: 3533: 3516: 3503: 3480: 3471: 3467: 3465: 3147: 3146:The general 3145: 3024: 3012: 3008: 3006: 2933: 2818: 2695: 2693: 2595: 2593: 2580: 2573: 2571: 2380: 2377: 2171: 2166: 2162: 2160: 2043: 1960: 1954: 1952: 1880: 1827: 1697: 1407: 1295: 1285: 1281: 1279: 1149: 1145: 1138: 1131: 1127: 1123: 1119: 1111: 1107: 1103: 1101: 1020: 882: 792: 424: 420: 341: 333: 329: 327: 301: 275: 270: 265: 261: 257: 253: 251: 243: 223: 213: 205: 201: 198: 193: 189: 180: 168: 157: 136: 131: 89: 72: 67: 66: 51:parameterize 30: 29: 6257:RLC circuit 3489:are either 248:Conventions 65:, the term 6307:2024-08-23 6284:References 6267:RC circuit 6262:RL circuit 6197:statistics 181:Suppose a 164:statistics 41:involving 6161:~ 6146:~ 6143:ψ 6125:~ 6110:~ 6107:ψ 6087:~ 6062:~ 6036:− 6022:ω 6019:ℏ 5985:~ 5953:~ 5938:ω 5935:ℏ 5929:≡ 5897:~ 5882:~ 5879:ψ 5870:~ 5852:~ 5837:~ 5834:ψ 5814:~ 5789:~ 5763:− 5729:ω 5722:ℏ 5703:⇒ 5686:ℏ 5660:ω 5617:~ 5579:~ 5564:~ 5561:ψ 5547:ℏ 5506:~ 5491:~ 5488:ψ 5468:~ 5450:ℏ 5424:ω 5392:~ 5366:− 5358:⇒ 5349:~ 5334:~ 5331:ψ 5312:~ 5297:~ 5294:ψ 5274:~ 5243:ω 5211:~ 5147:ℏ 5141:− 5105:~ 5090:~ 5087:ψ 5053:ψ 5031:~ 5019:ψ 5004:ψ 4981:~ 4978:ψ 4926:≡ 4920:~ 4847:ψ 4829:ψ 4805:ω 4740:ℏ 4734:− 4682:ω 4666:Ω 4639:ζ 4553:τ 4528:χ 4499:τ 4496:Ω 4490:⁡ 4481:χ 4472:τ 4464:χ 4455:ζ 4437:τ 4428:χ 4412:⇒ 4403:ω 4397:⁡ 4166:τ 4141:χ 4112:τ 4100:χ 4091:τ 4083:χ 4074:⇒ 3955:ζ 3791:ω 3785:⁡ 3356:∑ 3284:… 3258:− 3238:− 3220:− 3121:τ 3109:χ 3100:τ 3092:χ 3083:ζ 3065:τ 3056:χ 3029:linewidth 2945:ζ 2914:τ 2902:χ 2893:τ 2885:χ 2849:τ 2840:χ 2779:⇒ 2552:τ 2497:χ 2459:τ 2451:χ 2410:τ 2401:χ 2358:τ 2330:τ 2315:χ 2293:τ 2285:χ 2237:τ 2228:χ 1856:τ 1808:τ 1790:τ 1759:τ 1667:τ 1604:τ 1504:⇒ 1498:τ 1463:τ 1440:τ 1360:τ 1351:⇒ 1348:τ 1323:⇒ 1310:τ 1253:χ 1244:⇒ 1221:χ 1192:τ 1183:⇒ 1160:τ 1076:τ 1064:χ 1055:τ 1047:χ 978:⇒ 840:⇒ 779:χ 751:τ 705:χ 674:τ 666:χ 632:τ 577:τ 562:χ 540:τ 532:χ 469:τ 444:χ 312:χ 286:τ 177:Rationale 120:half-life 77:intrinsic 6359:Category 6230:See also 1116:function 1110:, where 183:pendulum 55:measured 39:equation 37:from an 6214:by the 3579:= time 3485:of its 1122:. Both 256:" and " 68:scaling 63:systems 4958:where 4663:  4633:  4604:  4572:  4569:  4544:  4267:charge 4239:  4214:  4182:  4157:  2975:  2948:  1999:  620:  593:  460:  214:nature 206:system 187:period 96:length 3493:, or 3483:roots 1962:Eq. 2 1956:Eq. 1 1730:then 1114:is a 208:with 98:, or 6222:and 4713:The 3683:cos( 3491:real 2579:and 2165:and 1959:and 1284:and 1148:and 1137:and 1126:and 430:Set 6195:In 4721:is 4487:cos 4394:cos 3782:cos 3023:. 2 2648:If 2605:If 1118:of 212:of 162:in 6361:: 6300:. 6226:. 4904:)| 4886:)| 4289:, 4285:, 4010:RC 3685:ωt 3676:= 3509:. 3501:. 3478:. 3035:. 2601:: 1868:. 346:: 166:. 94:, 81:SI 6351:. 6310:. 6208:. 6170:. 6167:) 6158:x 6152:( 6137:E 6134:= 6131:) 6122:x 6116:( 6100:) 6094:2 6084:x 6077:+ 6069:2 6059:x 6052:d 6046:2 6042:d 6032:( 6026:2 5982:E 5959:. 5950:E 5942:2 5926:E 5906:, 5903:) 5894:x 5888:( 5867:E 5861:= 5858:) 5849:x 5843:( 5827:) 5821:2 5811:x 5804:+ 5796:2 5786:x 5779:d 5773:2 5769:d 5759:( 5736:. 5726:m 5716:= 5711:c 5707:x 5700:1 5697:= 5690:2 5679:4 5674:c 5670:x 5664:2 5654:2 5650:m 5624:2 5614:x 5588:. 5585:) 5576:x 5570:( 5551:2 5542:E 5537:2 5532:c 5528:x 5524:m 5521:2 5515:= 5512:) 5503:x 5497:( 5481:) 5475:2 5465:x 5454:2 5443:4 5438:c 5434:x 5428:2 5418:2 5414:m 5407:+ 5399:2 5389:x 5382:d 5376:2 5372:d 5362:( 5355:) 5346:x 5340:( 5324:E 5321:= 5318:) 5309:x 5303:( 5287:) 5281:2 5271:x 5262:2 5257:c 5253:x 5247:2 5239:m 5234:2 5231:1 5226:+ 5218:2 5208:x 5201:d 5195:2 5191:d 5181:2 5176:c 5172:x 5168:1 5160:m 5157:2 5151:2 5137:( 5114:. 5111:) 5102:x 5096:( 5081:= 5078:) 5075:) 5070:c 5066:x 5062:( 5059:x 5056:( 5050:= 5047:) 5042:c 5038:x 5028:x 5022:( 5016:= 5013:) 5010:x 5007:( 4964:c 4961:x 4946:, 4939:c 4935:x 4931:x 4917:x 4902:x 4900:( 4898:ψ 4896:| 4891:x 4884:x 4882:( 4880:ψ 4878:| 4859:. 4856:) 4853:x 4850:( 4844:E 4841:= 4838:) 4835:x 4832:( 4825:) 4819:2 4815:x 4809:2 4801:m 4796:2 4793:1 4788:+ 4780:2 4776:x 4772:d 4766:2 4762:d 4753:m 4750:2 4744:2 4730:( 4685:. 4677:c 4673:t 4669:= 4660:, 4654:L 4651:C 4645:R 4642:= 4636:2 4630:, 4625:C 4622:L 4617:= 4612:c 4608:t 4601:, 4596:0 4592:V 4588:C 4585:= 4580:c 4576:x 4566:, 4561:c 4557:t 4550:= 4547:t 4541:, 4536:c 4532:x 4525:= 4522:Q 4502:) 4493:( 4484:= 4478:+ 4469:d 4461:d 4452:2 4449:+ 4441:2 4433:d 4423:2 4419:d 4409:) 4406:t 4400:( 4389:0 4385:V 4381:= 4376:C 4373:Q 4368:+ 4362:t 4359:d 4354:Q 4351:d 4345:R 4342:+ 4334:2 4330:t 4326:d 4321:Q 4316:2 4312:d 4305:L 4295:Q 4291:L 4287:C 4283:R 4251:. 4248:V 4245:= 4242:F 4236:, 4233:C 4230:R 4227:= 4222:c 4218:t 4211:, 4206:0 4202:V 4198:C 4195:= 4190:c 4186:x 4179:, 4174:c 4170:t 4163:= 4160:t 4154:, 4149:c 4145:x 4138:= 4135:Q 4115:) 4109:( 4106:F 4103:= 4097:+ 4088:d 4080:d 4071:) 4068:t 4065:( 4062:V 4059:= 4054:C 4051:Q 4046:+ 4040:t 4037:d 4032:Q 4029:d 4023:R 3989:ζ 3970:k 3967:m 3963:B 3958:= 3952:2 3939:ζ 3919:k 3916:m 3910:= 3905:c 3901:t 3887:c 3884:t 3867:. 3862:k 3857:0 3853:F 3847:= 3842:c 3838:x 3824:c 3821:x 3797:) 3794:t 3788:( 3777:0 3773:F 3769:= 3766:x 3763:k 3760:+ 3754:t 3751:d 3746:x 3743:d 3737:B 3734:+ 3726:2 3722:t 3718:d 3713:x 3708:2 3704:d 3697:m 3687:) 3681:0 3678:F 3674:F 3655:k 3633:B 3611:m 3589:f 3567:t 3545:x 3472:t 3470:( 3468:f 3452:. 3449:) 3446:t 3443:( 3440:f 3437:A 3434:= 3431:) 3428:t 3425:( 3422:x 3417:k 3411:) 3402:t 3399:d 3395:d 3388:( 3381:k 3377:a 3371:n 3366:0 3363:= 3360:k 3352:= 3349:) 3346:t 3343:( 3340:x 3335:0 3331:a 3327:+ 3324:) 3321:t 3318:( 3315:x 3309:t 3306:d 3302:d 3295:1 3291:a 3287:+ 3281:+ 3278:) 3275:t 3272:( 3269:x 3261:1 3255:n 3251:t 3247:d 3241:1 3235:n 3231:d 3223:1 3217:n 3213:a 3209:+ 3206:) 3203:t 3200:( 3197:x 3189:n 3185:t 3181:d 3175:n 3171:d 3163:n 3159:a 3148:n 3127:. 3124:) 3118:( 3115:F 3112:= 3106:+ 3097:d 3089:d 3080:2 3077:+ 3069:2 3061:d 3051:2 3047:d 3025:ζ 3013:ζ 3009:ζ 2993:. 2987:c 2984:a 2980:b 2967:f 2964:e 2961:d 2955:= 2942:2 2920:. 2917:) 2911:( 2908:F 2905:= 2899:+ 2890:d 2882:d 2873:c 2870:a 2866:b 2861:+ 2853:2 2845:d 2835:2 2831:d 2805:. 2800:c 2797:A 2792:= 2787:c 2783:x 2771:c 2767:x 2763:c 2759:A 2754:= 2746:c 2742:x 2738:a 2731:2 2726:c 2722:t 2718:A 2712:= 2709:1 2699:c 2696:x 2675:c 2672:a 2666:= 2661:c 2657:t 2631:b 2628:a 2623:= 2618:c 2614:t 2599:c 2596:t 2584:c 2581:t 2577:c 2574:x 2558:. 2555:) 2549:( 2546:F 2538:c 2534:x 2530:a 2523:2 2516:c 2512:t 2506:A 2500:= 2492:a 2489:c 2482:2 2475:c 2471:t 2465:+ 2456:d 2448:d 2440:a 2437:b 2430:c 2426:t 2422:+ 2414:2 2406:d 2396:2 2392:d 2364:. 2361:) 2355:( 2352:F 2349:A 2346:= 2343:) 2338:c 2334:t 2327:( 2324:f 2321:A 2318:= 2310:c 2306:x 2302:c 2299:+ 2290:d 2282:d 2272:c 2268:t 2262:c 2258:x 2252:b 2249:+ 2241:2 2233:d 2223:2 2219:d 2208:2 2201:c 2197:t 2189:c 2185:x 2179:a 2167:t 2163:x 2142:. 2139:) 2136:t 2133:( 2130:f 2127:A 2124:= 2121:x 2118:c 2115:+ 2109:t 2106:d 2101:x 2098:d 2092:b 2089:+ 2081:2 2077:t 2073:d 2068:x 2063:2 2059:d 2052:a 2025:. 2020:b 2017:A 2012:= 2007:c 2003:x 1996:, 1991:b 1988:a 1983:= 1978:c 1974:t 1939:. 1936:) 1933:t 1930:( 1927:f 1924:A 1921:= 1918:x 1915:b 1912:+ 1906:t 1903:d 1898:x 1895:d 1889:a 1836:F 1814:. 1811:) 1805:( 1802:F 1799:= 1796:) 1793:) 1787:( 1784:t 1781:( 1778:f 1775:= 1772:) 1767:c 1763:t 1756:( 1753:f 1750:= 1747:) 1744:t 1741:( 1738:f 1718:) 1715:t 1712:( 1709:f 1679:. 1671:n 1663:d 1657:n 1653:d 1643:n 1636:c 1632:t 1626:1 1621:= 1616:n 1611:) 1601:d 1597:d 1588:c 1584:t 1580:1 1574:( 1569:= 1564:n 1559:) 1553:t 1550:d 1546:d 1541:( 1536:= 1528:n 1524:t 1520:d 1514:n 1510:d 1495:d 1491:d 1482:c 1478:t 1474:1 1469:= 1460:d 1456:d 1448:t 1445:d 1437:d 1431:= 1425:t 1422:d 1418:d 1394:. 1387:c 1383:t 1379:1 1374:= 1368:t 1365:d 1357:d 1345:d 1340:c 1336:t 1332:= 1329:t 1326:d 1318:c 1314:t 1307:= 1304:t 1286:t 1282:x 1266:. 1261:c 1257:x 1250:= 1247:x 1237:c 1233:x 1229:x 1224:= 1200:c 1196:t 1189:= 1186:t 1176:c 1172:t 1168:t 1163:= 1150:t 1146:x 1142:c 1139:t 1135:c 1132:x 1128:t 1124:x 1120:t 1112:x 1108:t 1104:x 1082:. 1079:) 1073:( 1070:F 1067:= 1061:+ 1052:d 1044:d 1025:) 1023:2 1021:( 1004:. 999:b 996:A 991:= 986:c 982:x 975:1 972:= 964:c 960:x 956:b 952:A 947:= 939:c 935:x 931:a 924:c 920:t 916:A 887:) 885:1 883:( 866:. 861:b 858:a 853:= 848:c 844:t 837:1 834:= 829:a 823:c 819:t 815:b 796:c 793:t 757:. 754:) 748:( 745:F 737:c 733:x 729:a 722:c 718:t 714:A 708:= 700:a 694:c 690:t 686:b 680:+ 671:d 663:d 638:. 635:) 629:( 626:F 623:A 612:f 609:e 606:d 600:= 590:) 585:c 581:t 574:( 571:f 568:A 565:= 557:c 553:x 549:b 546:+ 537:d 529:d 519:c 515:t 509:c 505:x 499:a 477:c 473:t 466:= 463:t 457:, 452:c 448:x 441:= 438:x 427:. 425:x 421:t 404:. 401:) 398:t 395:( 392:f 389:A 386:= 383:x 380:b 377:+ 371:t 368:d 363:x 360:d 354:a 337:c 334:x 330:x 324:. 302:x 298:. 276:t 266:m 262:x 258:t 254:x 194:T 190:T 132:e 20:)

Index

Characteristic unit
physical dimensions
equation
physical quantities
substitution of variables
parameterize
measured
dimensional analysis
systems
intrinsic
SI
extensive quantities
resonance frequency
length
time constant
differential equations
control systems
doubling time
exponential growth
half-life
exponential decay
mean lifetime
List of dynamical systems and differential equations topics
List of partial differential equation topics
Differential equations of mathematical physics
normalization
statistics
Measuring devices
pendulum
period

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