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Wave vector

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3148: 2773: 3143:{\displaystyle {\begin{aligned}k_{s}^{0}&=\Lambda _{0}^{0}k_{\mathrm {obs} }^{0}+\Lambda _{1}^{0}k_{\mathrm {obs} }^{1}+\Lambda _{2}^{0}k_{\mathrm {obs} }^{2}+\Lambda _{3}^{0}k_{\mathrm {obs} }^{3}\\{\frac {\omega _{s}}{c}}&=\gamma {\frac {\omega _{\mathrm {obs} }}{c}}-\beta \gamma k_{\mathrm {obs} }^{1}\\&=\gamma {\frac {\omega _{\mathrm {obs} }}{c}}-\beta \gamma {\frac {\omega _{\mathrm {obs} }}{c}}\cos \theta .\end{aligned}}} 121: 3813: 3601: 1124: 2478: 1619: 2644: 1419: 1859: 2292: 3624: 3412: 714: 945: 842:, the direction of the wavevector is the same as the direction of wave propagation. If the medium is anisotropic, the wave vector in general points in directions other than that of the wave propagation. The wave vector is always perpendicular to surfaces of constant phase. 2124: 2307: 1430: 3927: 2502: 1233: 1709: 3366: 1991: 2649:
In the situation where light is being emitted by a fast moving source and one would like to know the frequency of light detected in an earth (lab) frame, we would apply the Lorentz transformation as follows. Note that the source is in a frame
2139: 389: 3808:{\displaystyle {\frac {\omega _{\mathrm {obs} }}{\omega _{s}}}={\frac {1}{\gamma (1-\beta )}}={\frac {\sqrt {1-\beta ^{2}}}{1-\beta }}={\frac {\sqrt {(1+\beta )(1-\beta )}}{1-\beta }}={\frac {\sqrt {1+\beta }}{\sqrt {1-\beta }}}} 3596:{\displaystyle {\frac {\omega _{\mathrm {obs} }}{\omega _{s}}}={\frac {1}{\gamma (1+\beta )}}={\frac {\sqrt {1-\beta ^{2}}}{1+\beta }}={\frac {\sqrt {(1+\beta )(1-\beta )}}{1+\beta }}={\frac {\sqrt {1-\beta }}{\sqrt {1+\beta }}}} 2736: 600: 4097:"This effect has been explained by Musgrave (1959) who has shown that the energy of an elastic wave in an anisotropic medium will not, in general, travel along the same path as the normal to the plane wavefront ...", 231: 1119:{\displaystyle K^{\mu }=\left({\frac {\omega }{c}},{\vec {k}}\right)=\left({\frac {\omega }{c}},{\frac {\omega }{v_{p}}}{\hat {n}}\right)=\left({\frac {2\pi }{cT}},{\frac {2\pi {\hat {n}}}{\lambda }}\right)\,} 2778: 293: 1238: 589: 920:
A moving wave surface in special relativity may be regarded as a hypersurface (a 3D subspace) in spacetime, formed by all the events passed by the wave surface. A wavetrain (denoted by some variable
2007: 2473:{\displaystyle K^{\mu }=\left({\frac {\omega }{c}},{\vec {k}}\right)=\left({\frac {\omega _{o}}{c^{2}}}\right)U^{\mu }=\left({\frac {\omega _{o}}{c^{2}}}\right)\gamma \left(c,{\vec {u}}\right)} 3269: 771: 179: 523: 1614:{\displaystyle K^{\mu }K_{\mu }=\left({\frac {\omega }{c}}\right)^{2}-k_{x}^{2}-k_{y}^{2}-k_{z}^{2}=\left({\frac {\omega _{o}}{c}}\right)^{2}=\left({\frac {m_{o}c}{\hbar }}\right)^{2}} 2639:{\displaystyle \Lambda ={\begin{pmatrix}\gamma &-\beta \gamma &\ 0\ &\ 0\ \\-\beta \gamma &\gamma &0&0\\0&0&1&0\\0&0&0&1\end{pmatrix}}} 1414:{\displaystyle {\begin{aligned}K^{\mu }&=\left({\frac {\omega }{c}},k_{x},k_{y},k_{z}\right)\,\\K_{\mu }&=\left({\frac {\omega }{c}},-k_{x},-k_{y},-k_{z}\right)\end{aligned}}} 1854:{\displaystyle K^{\mu }=\left({\frac {\omega }{c}},{\vec {k}}\right)=\left({\frac {\omega }{c}},{\frac {\omega }{c}}{\hat {n}}\right)={\frac {\omega }{c}}\left(1,{\hat {n}}\right)\,} 3840: 1156: 3283: 2287:{\displaystyle K^{\mu }=\left({\frac {\omega }{c}},{\vec {k}}\right)=\left({\frac {2\pi }{c}}\right)N^{\mu }=\left({\frac {2\pi }{c}}\right)\left(\nu ,\nu {\vec {n}}\right)} 1871: 3404: 3177: 1185: 4014: 1702: 1663: 2765: 3204: 308: 740: 1224: 1220: 709:{\displaystyle \psi \left(\mathbf {r} ,t\right)=A\cos \left(2\pi \left({\tilde {\boldsymbol {\nu }}}\cdot {\mathbf {r} }-ft\right)+\varphi \right),} 2668: 184: 4187: 4158: 4067: 4040: 3998: 68:), with a typical unit being radian per metre. The wave vector and angular wave vector are related by a fixed constant of proportionality, 2 928:
is a scalar function of position in spacetime. The derivative of this scalar is a vector that characterizes the wave, the four-wavevector.
4211: 4127: 255: 2119:{\displaystyle P^{\mu }=\left({\frac {E}{c}},{\vec {p}}\right)=\hbar K^{\mu }=\hbar \left({\frac {\omega }{c}},{\vec {k}}\right)} 539: 1865:
which would have the following relation between the frequency and the magnitude of the spatial part of the four-wavevector:
532:
is the angular wave vector of the wave, describing how many radians it traverses per unit of distance, and related to the
908:
which is sinusoidal, and the wavevector is defined via that envelope wave, usually using the "physics definition". See
2493: 3209: 747: 155: 485: 792:". The "direction of wave propagation" is the direction of a wave's energy flow, and the direction that a small 3922:{\displaystyle {\frac {\omega _{\mathrm {obs} }}{\omega _{s}}}={\frac {1}{\gamma (1-0)}}={\frac {1}{\gamma }}} 4206: 1132: 53:), and its direction is perpendicular to the wavefront. In isotropic media, this is also the direction of 3967: 3361:{\displaystyle {\frac {\omega _{\mathrm {obs} }}{\omega _{s}}}={\frac {1}{\gamma (1-\beta \cos \theta )}}} 2489: 3380:
As an example, to apply this to a situation where the source is moving directly away from the observer (
1986:{\displaystyle K^{\mu }K_{\mu }=\left({\frac {\omega }{c}}\right)^{2}-k_{x}^{2}-k_{y}^{2}-k_{z}^{2}=0} 3963: 3938: 3823:
To apply this to a situation where the source is moving transversely with respect to the observer (
872: 3383: 3156: 4008: 3943: 97: 34: 1161: 909: 866: 4150: 4144: 924:) can be regarded as a one-parameter family of such hypersurfaces in spacetime. This variable 4183: 4154: 4123: 4115: 4063: 4057: 4036: 4030: 3994: 3988: 1629: 892: 472: 384:{\displaystyle \psi (\mathbf {r} ,t)=A\cos(\mathbf {k} \cdot \mathbf {r} -\omega t+\varphi ),} 1674: 1635: 2744: 1625: 904: 854: 831: 789: 476: 102: 54: 42: 3182: 788:
The direction in which the wave vector points must be distinguished from the "direction of
475:
of the wave, describing how many radians it traverses per unit of time, and related to the
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To apply this to a situation where the source is moving straight towards the observer (
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can be defined, combining the (angular) wave vector and (angular) frequency.
2731:{\displaystyle k_{s}^{\mu }=\Lambda _{\nu }^{\mu }k_{\mathrm {obs} }^{\nu }} 452: 125: 4122:(Reprint of Prentice-Hall 1955 2nd ed.). Courier-Dover. p. 624. 226:{\displaystyle {\tilde {\nu }}=\left|{\tilde {\boldsymbol {\nu }}}\right|} 880: 827: 888: 76: 22: 1424:
In general, the Lorentz scalar magnitude of the wave four-vector is:
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describing the disturbance describing the wave (for example, for an
132:, can be measured between any two consecutive points with the same 1667:
An example of a null four-wavevector would be a beam of coherent,
835: 119: 804:. On the other hand, the wave vector points in the direction of 38: 800:. For light waves in vacuum, this is also the direction of the 594:
The equivalent equation using the wave vector and frequency is
288:{\displaystyle \mathbf {k} =2\pi {\tilde {\boldsymbol {\nu }}}} 152:
have distinct meanings. Here, the wave vector is denoted by
136:, such as between adjacent crests, or troughs, or adjacent 584:{\displaystyle |\mathbf {k} |={\tfrac {2\pi }{\lambda }}.} 2662:. Applying the Lorentz transformation to the wave vector 16:
Vector describing a wave; often its propagation direction
4149:(2nd ed.). Oxford Science Publications. pp.  3819:
Source moving tangentially (transverse Doppler effect)
2517: 1137: 562: 496: 41:, with a typical unit being cycle per metre. It has a 3843: 3627: 3415: 3386: 3286: 3212: 3185: 3159: 2776: 2747: 2671: 2505: 2310: 2142: 2010: 1874: 1712: 1677: 1638: 1433: 1236: 1164: 1158:
is the temporal component, and the wavenumber vector
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In most contexts, both the radian and the cycle (or
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of the wave (the peak magnitude of the oscillation),
3921: 3807: 3595: 3398: 3360: 3263: 3198: 3171: 3142: 2759: 2730: 2638: 2472: 2286: 2118: 1985: 1853: 1696: 1657: 1613: 1413: 1179: 1150: 1118: 765: 734: 708: 583: 517: 433:would be the excess height of the water, or for a 383: 287: 225: 173: 79:to refer to the angular wave vector simply as the 2492:of the four-wavevector is one way to derive the 808:. In other words, the wave vector points in the 3264:{\displaystyle k^{0},k^{1}=k^{0}\cos \theta .} 766:{\displaystyle {\tilde {\boldsymbol {\nu }}}} 174:{\displaystyle {\tilde {\boldsymbol {\nu }}}} 140:with the same direction of transit, as shown. 8: 4180:Modern Problems in Classical Electrodynamics 4143:Wolfgang Rindler (1991). "§24 Wave motion". 4013:: CS1 maint: multiple names: authors list ( 845:For example, when a wave travels through an 518:{\displaystyle \omega ={\tfrac {2\pi }{T}},} 4087:. Holt, Rinehart, and Winston. p. 177. 49:of the wave (inversely proportional to the 4056:Vaĭnshteĭn, Boris Konstantinovich (1994). 1632:(photonic) particles, where the rest mass 4120:Fundamental Formulas of Physics, Volume 2 3909: 3879: 3868: 3851: 3850: 3844: 3842: 3779: 3729: 3706: 3693: 3663: 3652: 3635: 3634: 3628: 3626: 3567: 3517: 3494: 3481: 3451: 3440: 3423: 3422: 3416: 3414: 3385: 3322: 3311: 3294: 3293: 3287: 3285: 3243: 3230: 3217: 3211: 3190: 3184: 3158: 3106: 3105: 3099: 3072: 3071: 3065: 3046: 3034: 3033: 3002: 3001: 2995: 2974: 2968: 2958: 2946: 2945: 2935: 2930: 2917: 2905: 2904: 2894: 2889: 2876: 2864: 2863: 2853: 2848: 2835: 2823: 2822: 2812: 2807: 2790: 2785: 2777: 2775: 2746: 2722: 2710: 2709: 2699: 2694: 2681: 2676: 2670: 2512: 2504: 2454: 2453: 2427: 2417: 2411: 2398: 2382: 2372: 2366: 2343: 2342: 2329: 2315: 2309: 2268: 2267: 2234: 2221: 2198: 2175: 2174: 2161: 2147: 2141: 2100: 2099: 2086: 2069: 2043: 2042: 2029: 2015: 2009: 1971: 1966: 1953: 1948: 1935: 1930: 1917: 1903: 1889: 1879: 1873: 1850: 1834: 1833: 1812: 1793: 1792: 1782: 1769: 1745: 1744: 1731: 1717: 1711: 1682: 1676: 1643: 1637: 1605: 1586: 1579: 1565: 1550: 1544: 1530: 1525: 1512: 1507: 1494: 1489: 1476: 1462: 1448: 1438: 1432: 1396: 1380: 1364: 1344: 1326: 1317: 1306: 1293: 1280: 1263: 1245: 1237: 1235: 1166: 1165: 1163: 1136: 1134: 1115: 1093: 1092: 1083: 1060: 1036: 1035: 1027: 1018: 1005: 981: 980: 967: 953: 947: 851:light waves through an asymmetric crystal 752: 751: 749: 727: 672: 671: 657: 656: 612: 602: 561: 553: 548: 543: 541: 495: 487: 355: 347: 318: 310: 274: 273: 259: 257: 233:. The angular wave vector is denoted by 208: 207: 189: 188: 186: 160: 159: 157: 1194:can be written as the angular frequency 898:. These electron waves are not ordinary 3978: 3955: 2078: 2062: 1596: 754: 659: 276: 210: 162: 87:. It is also common to use the symbol 4006: 2297:The four-wavevector is related to the 2129:The four-wavevector is related to the 1997:The four-wavevector is related to the 2656:and earth is in the observing frame, 1151:{\displaystyle {\tfrac {\omega }{c}}} 796:will move, i.e. the direction of the 7: 2496:. The Lorentz matrix is defined as 4146:Introduction to Special Relativity 3987:Harris, Benenson, Stöcker (2002). 3858: 3855: 3852: 3642: 3639: 3636: 3430: 3427: 3424: 3301: 3298: 3295: 3113: 3110: 3107: 3079: 3076: 3073: 3041: 3038: 3035: 3009: 3006: 3003: 2953: 2950: 2947: 2927: 2912: 2909: 2906: 2886: 2871: 2868: 2865: 2845: 2830: 2827: 2824: 2804: 2717: 2714: 2711: 2691: 2506: 902:waves, but they do have a kind of 830:such as air, any gas, any liquid, 75:It is common in several fields of 14: 3607:Source moving towards (blueshift) 2741:and choosing just to look at the 3970:1, reducing this constant to 2π. 3277: 1671:light, which has phase-velocity 1219:When written out explicitly its 1208:, or in terms of inverse period 875:, the "wavevector" (also called 673: 613: 549: 356: 348: 319: 260: 60:A closely related vector is the 83:, in contrast to, for example, 3900: 3888: 3759: 3747: 3744: 3732: 3684: 3672: 3547: 3535: 3532: 3520: 3472: 3460: 3352: 3331: 2459: 2348: 2273: 2180: 2105: 2048: 1839: 1798: 1750: 1171: 1098: 1041: 986: 931:The four-wavevector is a wave 757: 662: 554: 544: 375: 344: 329: 315: 279: 239:and the angular wavenumber by 213: 194: 165: 1: 4085:Introduction to modern optics 3376:Source moving away (redshift) 3399:{\displaystyle \theta =\pi } 3172:{\displaystyle \cos \theta } 1190:Alternately, the wavenumber 1129:where the angular frequency 778:Direction of the wave vector 4182:. Oxford University Press. 3179:is the direction cosine of 2494:relativistic Doppler effect 4230: 4212:Vector physical quantities 1187:is the spatial component. 1180:{\displaystyle {\vec {k}}} 864: 814:surfaces of constant phase 781: 113: 4178:Brau, Charles A. (2004). 4114:Donald H. Menzel (1960). 4027:Crystallography example: 891:is the wavevector of its 853:or sound waves through a 93:for whichever is in use. 72: radians per cycle. 252:. These are related by 1697:{\displaystyle v_{p}=c} 1658:{\displaystyle m_{o}=0} 1624:The four-wavevector is 1212:and inverse wavelength 45:. Its magnitude is the 43:magnitude and direction 4083:Fowles, Grant (1968). 4059:Modern Crystallography 4032:Modern Crystallography 3968:dimensionless quantity 3923: 3809: 3597: 3400: 3362: 3265: 3200: 3173: 3144: 2761: 2760:{\displaystyle \mu =0} 2732: 2640: 2490:Lorentz transformation 2484:Lorentz transformation 2474: 2288: 2120: 1987: 1855: 1698: 1659: 1615: 1415: 1181: 1152: 1120: 861:In solid-state physics 767: 736: 710: 585: 519: 385: 289: 227: 181:and the wavenumber by 175: 141: 4099:Sound waves in solids 3966:) are treated as the 3924: 3810: 3598: 3401: 3363: 3266: 3201: 3199:{\displaystyle k^{1}} 3174: 3145: 2767:component results in 2762: 2733: 2641: 2475: 2289: 2121: 1993:{for light-like/null} 1988: 1861:{for light-like/null} 1856: 1699: 1660: 1616: 1416: 1182: 1153: 1121: 937:Minkowski coordinates 916:In special relativity 912:for further details. 768: 737: 711: 586: 520: 386: 302:follows the equation 290: 228: 176: 123: 37:used in describing a 3939:Plane-wave expansion 3841: 3625: 3413: 3384: 3284: 3210: 3183: 3157: 2774: 2745: 2669: 2503: 2308: 2140: 2008: 1872: 1710: 1675: 1636: 1431: 1234: 1162: 1133: 946: 935:that is defined, in 748: 726: 601: 540: 486: 441:would be the excess 309: 256: 185: 156: 4029:Vaĭnshteĭn (1994). 3990:Handbook of Physics 3051: 2963: 2940: 2922: 2899: 2881: 2858: 2840: 2817: 2795: 2727: 2704: 2686: 1976: 1958: 1940: 1535: 1517: 1499: 873:solid-state physics 150:angular wave vector 62:angular wave vector 4116:"§10.5 Bloch wave" 4101:by Pollard, 1977. 3944:Plane of incidence 3919: 3805: 3593: 3396: 3358: 3261: 3196: 3169: 3140: 3138: 3029: 2941: 2926: 2900: 2885: 2859: 2844: 2818: 2803: 2781: 2757: 2728: 2705: 2690: 2672: 2636: 2630: 2470: 2284: 2116: 1983: 1962: 1944: 1926: 1851: 1694: 1655: 1611: 1521: 1503: 1485: 1411: 1409: 1177: 1148: 1146: 1116: 893:quantum-mechanical 847:anisotropic medium 773:is the wave vector 763: 732: 706: 581: 576: 515: 510: 471:is the (temporal) 381: 285: 223: 171: 142: 98:special relativity 96:In the context of 66:angular wavevector 4189:978-0-19-514665-3 4160:978-0-19-853952-0 4069:978-3-540-56558-1 4042:978-3-540-56558-1 4000:978-0-387-95269-7 3985:Physics example: 3917: 3904: 3874: 3834:), this becomes: 3803: 3802: 3791: 3774: 3762: 3724: 3712: 3688: 3658: 3618:), this becomes: 3591: 3590: 3579: 3562: 3550: 3512: 3500: 3476: 3446: 3406:), this becomes: 3371: 3370: 3356: 3317: 3122: 3088: 3018: 2983: 2555: 2549: 2544: 2538: 2462: 2433: 2388: 2351: 2337: 2276: 2247: 2211: 2183: 2169: 2108: 2094: 2051: 2037: 1911: 1842: 1820: 1801: 1790: 1777: 1753: 1739: 1599: 1559: 1470: 1352: 1271: 1174: 1145: 1108: 1101: 1078: 1044: 1033: 1013: 989: 975: 905:envelope function 760: 735:{\displaystyle f} 665: 575: 509: 473:angular frequency 415:is a function of 282: 216: 197: 168: 4219: 4193: 4165: 4164: 4140: 4134: 4133: 4111: 4105: 4095: 4089: 4088: 4080: 4074: 4073: 4053: 4047: 4046: 4025: 4019: 4018: 4012: 4004: 3983: 3971: 3960: 3928: 3926: 3925: 3920: 3918: 3910: 3905: 3903: 3880: 3875: 3873: 3872: 3863: 3862: 3861: 3845: 3833: 3814: 3812: 3811: 3806: 3804: 3792: 3781: 3780: 3775: 3773: 3731: 3730: 3725: 3723: 3711: 3710: 3695: 3694: 3689: 3687: 3664: 3659: 3657: 3656: 3647: 3646: 3645: 3629: 3617: 3602: 3600: 3599: 3594: 3592: 3580: 3569: 3568: 3563: 3561: 3519: 3518: 3513: 3511: 3499: 3498: 3483: 3482: 3477: 3475: 3452: 3447: 3445: 3444: 3435: 3434: 3433: 3417: 3405: 3403: 3402: 3397: 3367: 3365: 3364: 3359: 3357: 3355: 3323: 3318: 3316: 3315: 3306: 3305: 3304: 3288: 3278: 3270: 3268: 3267: 3262: 3248: 3247: 3235: 3234: 3222: 3221: 3206:with respect to 3205: 3203: 3202: 3197: 3195: 3194: 3178: 3176: 3175: 3170: 3149: 3147: 3146: 3141: 3139: 3123: 3118: 3117: 3116: 3100: 3089: 3084: 3083: 3082: 3066: 3055: 3050: 3045: 3044: 3019: 3014: 3013: 3012: 2996: 2984: 2979: 2978: 2969: 2962: 2957: 2956: 2939: 2934: 2921: 2916: 2915: 2898: 2893: 2880: 2875: 2874: 2857: 2852: 2839: 2834: 2833: 2816: 2811: 2794: 2789: 2766: 2764: 2763: 2758: 2737: 2735: 2734: 2729: 2726: 2721: 2720: 2703: 2698: 2685: 2680: 2661: 2655: 2645: 2643: 2642: 2637: 2635: 2634: 2553: 2547: 2542: 2536: 2479: 2477: 2476: 2471: 2469: 2465: 2464: 2463: 2455: 2438: 2434: 2432: 2431: 2422: 2421: 2412: 2403: 2402: 2393: 2389: 2387: 2386: 2377: 2376: 2367: 2358: 2354: 2353: 2352: 2344: 2338: 2330: 2320: 2319: 2293: 2291: 2290: 2285: 2283: 2279: 2278: 2277: 2269: 2252: 2248: 2243: 2235: 2226: 2225: 2216: 2212: 2207: 2199: 2190: 2186: 2185: 2184: 2176: 2170: 2162: 2152: 2151: 2125: 2123: 2122: 2117: 2115: 2111: 2110: 2109: 2101: 2095: 2087: 2074: 2073: 2058: 2054: 2053: 2052: 2044: 2038: 2030: 2020: 2019: 1992: 1990: 1989: 1984: 1975: 1970: 1957: 1952: 1939: 1934: 1922: 1921: 1916: 1912: 1904: 1894: 1893: 1884: 1883: 1860: 1858: 1857: 1852: 1849: 1845: 1844: 1843: 1835: 1821: 1813: 1808: 1804: 1803: 1802: 1794: 1791: 1783: 1778: 1770: 1760: 1756: 1755: 1754: 1746: 1740: 1732: 1722: 1721: 1703: 1701: 1700: 1695: 1687: 1686: 1664: 1662: 1661: 1656: 1648: 1647: 1620: 1618: 1617: 1612: 1610: 1609: 1604: 1600: 1595: 1591: 1590: 1580: 1570: 1569: 1564: 1560: 1555: 1554: 1545: 1534: 1529: 1516: 1511: 1498: 1493: 1481: 1480: 1475: 1471: 1463: 1453: 1452: 1443: 1442: 1420: 1418: 1417: 1412: 1410: 1406: 1402: 1401: 1400: 1385: 1384: 1369: 1368: 1353: 1345: 1331: 1330: 1316: 1312: 1311: 1310: 1298: 1297: 1285: 1284: 1272: 1264: 1250: 1249: 1215: 1211: 1207: 1197: 1193: 1186: 1184: 1183: 1178: 1176: 1175: 1167: 1157: 1155: 1154: 1149: 1147: 1138: 1125: 1123: 1122: 1117: 1114: 1110: 1109: 1104: 1103: 1102: 1094: 1084: 1079: 1077: 1069: 1061: 1051: 1047: 1046: 1045: 1037: 1034: 1032: 1031: 1019: 1014: 1006: 996: 992: 991: 990: 982: 976: 968: 958: 957: 927: 923: 855:sedimentary rock 832:amorphous solids 828:isotropic medium 810:normal direction 790:wave propagation 772: 770: 769: 764: 762: 761: 753: 742:is the frequency 741: 739: 738: 733: 715: 713: 712: 707: 702: 698: 691: 687: 677: 676: 667: 666: 658: 627: 623: 616: 590: 588: 587: 582: 577: 571: 563: 557: 552: 547: 536:by the equation 531: 524: 522: 521: 516: 511: 505: 497: 482:by the equation 481: 470: 460: 450: 440: 432: 424: 420: 414: 408: 402: 390: 388: 387: 382: 359: 351: 322: 294: 292: 291: 286: 284: 283: 275: 263: 251: 249: 238: 232: 230: 229: 224: 222: 218: 217: 209: 199: 198: 190: 180: 178: 177: 172: 170: 169: 161: 131: 124:Wavelength of a 103:wave four-vector 92: 71: 55:wave propagation 4229: 4228: 4222: 4221: 4220: 4218: 4217: 4216: 4197: 4196: 4190: 4177: 4174: 4172:Further reading 4169: 4168: 4161: 4142: 4141: 4137: 4130: 4113: 4112: 4108: 4096: 4092: 4082: 4081: 4077: 4070: 4062:. p. 259. 4055: 4054: 4050: 4043: 4035:. p. 259. 4028: 4026: 4022: 4005: 4001: 3993:. p. 288. 3986: 3984: 3980: 3975: 3974: 3961: 3957: 3952: 3935: 3884: 3864: 3846: 3839: 3838: 3824: 3821: 3763: 3713: 3702: 3668: 3648: 3630: 3623: 3622: 3612: 3609: 3551: 3501: 3490: 3456: 3436: 3418: 3411: 3410: 3382: 3381: 3378: 3327: 3307: 3289: 3282: 3281: 3239: 3226: 3213: 3208: 3207: 3186: 3181: 3180: 3155: 3154: 3137: 3136: 3101: 3067: 3053: 3052: 2997: 2985: 2970: 2965: 2964: 2796: 2772: 2771: 2743: 2742: 2667: 2666: 2657: 2651: 2629: 2628: 2623: 2618: 2613: 2607: 2606: 2601: 2596: 2591: 2585: 2584: 2579: 2574: 2569: 2557: 2556: 2545: 2534: 2523: 2513: 2501: 2500: 2486: 2446: 2442: 2423: 2413: 2407: 2394: 2378: 2368: 2362: 2328: 2324: 2311: 2306: 2305: 2257: 2253: 2236: 2230: 2217: 2200: 2194: 2160: 2156: 2143: 2138: 2137: 2085: 2081: 2065: 2028: 2024: 2011: 2006: 2005: 1899: 1898: 1885: 1875: 1870: 1869: 1826: 1822: 1768: 1764: 1730: 1726: 1713: 1708: 1707: 1678: 1673: 1672: 1639: 1634: 1633: 1582: 1581: 1575: 1574: 1546: 1540: 1539: 1458: 1457: 1444: 1434: 1429: 1428: 1408: 1407: 1392: 1376: 1360: 1343: 1339: 1332: 1322: 1319: 1318: 1302: 1289: 1276: 1262: 1258: 1251: 1241: 1232: 1231: 1213: 1209: 1206: 1202: 1198:divided by the 1195: 1191: 1160: 1159: 1131: 1130: 1085: 1070: 1062: 1059: 1055: 1023: 1004: 1000: 966: 962: 949: 944: 943: 925: 921: 918: 910:Bloch's theorem 869: 867:Bloch's theorem 863: 802:Poynting vector 786: 780: 746: 745: 724: 723: 655: 651: 644: 640: 611: 607: 599: 598: 564: 538: 537: 527: 498: 484: 483: 479: 468: 458: 448: 438: 430: 422: 416: 412: 406: 398: 307: 306: 254: 253: 245: 240: 234: 203: 183: 182: 154: 153: 129: 118: 112: 88: 85:crystallography 69: 17: 12: 11: 5: 4227: 4226: 4223: 4215: 4214: 4209: 4207:Wave mechanics 4199: 4198: 4195: 4194: 4188: 4173: 4170: 4167: 4166: 4159: 4135: 4129:978-0486605968 4128: 4106: 4090: 4075: 4068: 4048: 4041: 4020: 3999: 3977: 3976: 3973: 3972: 3954: 3953: 3951: 3948: 3947: 3946: 3941: 3934: 3931: 3930: 3929: 3916: 3913: 3908: 3902: 3899: 3896: 3893: 3890: 3887: 3883: 3878: 3871: 3867: 3860: 3857: 3854: 3849: 3820: 3817: 3816: 3815: 3801: 3798: 3795: 3790: 3787: 3784: 3778: 3772: 3769: 3766: 3761: 3758: 3755: 3752: 3749: 3746: 3743: 3740: 3737: 3734: 3728: 3722: 3719: 3716: 3709: 3705: 3701: 3698: 3692: 3686: 3683: 3680: 3677: 3674: 3671: 3667: 3662: 3655: 3651: 3644: 3641: 3638: 3633: 3608: 3605: 3604: 3603: 3589: 3586: 3583: 3578: 3575: 3572: 3566: 3560: 3557: 3554: 3549: 3546: 3543: 3540: 3537: 3534: 3531: 3528: 3525: 3522: 3516: 3510: 3507: 3504: 3497: 3493: 3489: 3486: 3480: 3474: 3471: 3468: 3465: 3462: 3459: 3455: 3450: 3443: 3439: 3432: 3429: 3426: 3421: 3395: 3392: 3389: 3377: 3374: 3373: 3372: 3369: 3368: 3354: 3351: 3348: 3345: 3342: 3339: 3336: 3333: 3330: 3326: 3321: 3314: 3310: 3303: 3300: 3297: 3292: 3260: 3257: 3254: 3251: 3246: 3242: 3238: 3233: 3229: 3225: 3220: 3216: 3193: 3189: 3168: 3165: 3162: 3151: 3150: 3135: 3132: 3129: 3126: 3121: 3115: 3112: 3109: 3104: 3098: 3095: 3092: 3087: 3081: 3078: 3075: 3070: 3064: 3061: 3058: 3056: 3054: 3049: 3043: 3040: 3037: 3032: 3028: 3025: 3022: 3017: 3011: 3008: 3005: 3000: 2994: 2991: 2988: 2986: 2982: 2977: 2973: 2967: 2966: 2961: 2955: 2952: 2949: 2944: 2938: 2933: 2929: 2925: 2920: 2914: 2911: 2908: 2903: 2897: 2892: 2888: 2884: 2879: 2873: 2870: 2867: 2862: 2856: 2851: 2847: 2843: 2838: 2832: 2829: 2826: 2821: 2815: 2810: 2806: 2802: 2799: 2797: 2793: 2788: 2784: 2780: 2779: 2756: 2753: 2750: 2739: 2738: 2725: 2719: 2716: 2713: 2708: 2702: 2697: 2693: 2689: 2684: 2679: 2675: 2647: 2646: 2633: 2627: 2624: 2622: 2619: 2617: 2614: 2612: 2609: 2608: 2605: 2602: 2600: 2597: 2595: 2592: 2590: 2587: 2586: 2583: 2580: 2578: 2575: 2573: 2570: 2568: 2565: 2562: 2559: 2558: 2552: 2546: 2541: 2535: 2533: 2530: 2527: 2524: 2522: 2519: 2518: 2516: 2511: 2508: 2485: 2482: 2481: 2480: 2468: 2461: 2458: 2452: 2449: 2445: 2441: 2437: 2430: 2426: 2420: 2416: 2410: 2406: 2401: 2397: 2392: 2385: 2381: 2375: 2371: 2365: 2361: 2357: 2350: 2347: 2341: 2336: 2333: 2327: 2323: 2318: 2314: 2295: 2294: 2282: 2275: 2272: 2266: 2263: 2260: 2256: 2251: 2246: 2242: 2239: 2233: 2229: 2224: 2220: 2215: 2210: 2206: 2203: 2197: 2193: 2189: 2182: 2179: 2173: 2168: 2165: 2159: 2155: 2150: 2146: 2131:four-frequency 2127: 2126: 2114: 2107: 2104: 2098: 2093: 2090: 2084: 2080: 2077: 2072: 2068: 2064: 2061: 2057: 2050: 2047: 2041: 2036: 2033: 2027: 2023: 2018: 2014: 1995: 1994: 1982: 1979: 1974: 1969: 1965: 1961: 1956: 1951: 1947: 1943: 1938: 1933: 1929: 1925: 1920: 1915: 1910: 1907: 1902: 1897: 1892: 1888: 1882: 1878: 1863: 1862: 1848: 1841: 1838: 1832: 1829: 1825: 1819: 1816: 1811: 1807: 1800: 1797: 1789: 1786: 1781: 1776: 1773: 1767: 1763: 1759: 1752: 1749: 1743: 1738: 1735: 1729: 1725: 1720: 1716: 1693: 1690: 1685: 1681: 1654: 1651: 1646: 1642: 1622: 1621: 1608: 1603: 1598: 1594: 1589: 1585: 1578: 1573: 1568: 1563: 1558: 1553: 1549: 1543: 1538: 1533: 1528: 1524: 1520: 1515: 1510: 1506: 1502: 1497: 1492: 1488: 1484: 1479: 1474: 1469: 1466: 1461: 1456: 1451: 1447: 1441: 1437: 1422: 1421: 1405: 1399: 1395: 1391: 1388: 1383: 1379: 1375: 1372: 1367: 1363: 1359: 1356: 1351: 1348: 1342: 1338: 1335: 1333: 1329: 1325: 1321: 1320: 1315: 1309: 1305: 1301: 1296: 1292: 1288: 1283: 1279: 1275: 1270: 1267: 1261: 1257: 1254: 1252: 1248: 1244: 1240: 1239: 1204: 1200:phase-velocity 1173: 1170: 1144: 1141: 1127: 1126: 1113: 1107: 1100: 1097: 1091: 1088: 1082: 1076: 1073: 1068: 1065: 1058: 1054: 1050: 1043: 1040: 1030: 1026: 1022: 1017: 1012: 1009: 1003: 999: 995: 988: 985: 979: 974: 971: 965: 961: 956: 952: 917: 914: 865:Main article: 862: 859: 840:cubic crystals 816:, also called 806:phase velocity 798:group velocity 784:Group velocity 782:Main article: 779: 776: 775: 774: 759: 756: 743: 731: 717: 716: 705: 701: 697: 694: 690: 686: 683: 680: 675: 670: 664: 661: 654: 650: 647: 643: 639: 636: 633: 630: 626: 622: 619: 615: 610: 606: 592: 591: 580: 574: 570: 567: 560: 556: 551: 546: 525: 514: 508: 504: 501: 494: 491: 466: 456: 446: 410: 404: 392: 391: 380: 377: 374: 371: 368: 365: 362: 358: 354: 350: 346: 343: 340: 337: 334: 331: 328: 325: 321: 317: 314: 300:traveling wave 281: 278: 272: 269: 266: 262: 221: 215: 212: 206: 202: 196: 193: 167: 164: 138:zero crossings 116:Traveling wave 111: 108: 15: 13: 10: 9: 6: 4: 3: 2: 4225: 4224: 4213: 4210: 4208: 4205: 4204: 4202: 4191: 4185: 4181: 4176: 4175: 4171: 4162: 4156: 4152: 4148: 4147: 4139: 4136: 4131: 4125: 4121: 4117: 4110: 4107: 4104: 4100: 4094: 4091: 4086: 4079: 4076: 4071: 4065: 4061: 4060: 4052: 4049: 4044: 4038: 4034: 4033: 4024: 4021: 4016: 4010: 4002: 3996: 3992: 3991: 3982: 3979: 3969: 3965: 3959: 3956: 3949: 3945: 3942: 3940: 3937: 3936: 3932: 3914: 3911: 3906: 3897: 3894: 3891: 3885: 3881: 3876: 3869: 3865: 3847: 3837: 3836: 3835: 3831: 3827: 3818: 3799: 3796: 3793: 3788: 3785: 3782: 3776: 3770: 3767: 3764: 3756: 3753: 3750: 3741: 3738: 3735: 3726: 3720: 3717: 3714: 3707: 3703: 3699: 3696: 3690: 3681: 3678: 3675: 3669: 3665: 3660: 3653: 3649: 3631: 3621: 3620: 3619: 3615: 3606: 3587: 3584: 3581: 3576: 3573: 3570: 3564: 3558: 3555: 3552: 3544: 3541: 3538: 3529: 3526: 3523: 3514: 3508: 3505: 3502: 3495: 3491: 3487: 3484: 3478: 3469: 3466: 3463: 3457: 3453: 3448: 3441: 3437: 3419: 3409: 3408: 3407: 3393: 3390: 3387: 3375: 3349: 3346: 3343: 3340: 3337: 3334: 3328: 3324: 3319: 3312: 3308: 3290: 3280: 3279: 3276: 3275: 3274: 3271: 3258: 3255: 3252: 3249: 3244: 3240: 3236: 3231: 3227: 3223: 3218: 3214: 3191: 3187: 3166: 3163: 3160: 3133: 3130: 3127: 3124: 3119: 3102: 3096: 3093: 3090: 3085: 3068: 3062: 3059: 3057: 3047: 3030: 3026: 3023: 3020: 3015: 2998: 2992: 2989: 2987: 2980: 2975: 2971: 2959: 2942: 2936: 2931: 2923: 2918: 2901: 2895: 2890: 2882: 2877: 2860: 2854: 2849: 2841: 2836: 2819: 2813: 2808: 2800: 2798: 2791: 2786: 2782: 2770: 2769: 2768: 2754: 2751: 2748: 2723: 2706: 2700: 2695: 2687: 2682: 2677: 2673: 2665: 2664: 2663: 2660: 2654: 2631: 2625: 2620: 2615: 2610: 2603: 2598: 2593: 2588: 2581: 2576: 2571: 2566: 2563: 2560: 2550: 2539: 2531: 2528: 2525: 2520: 2514: 2509: 2499: 2498: 2497: 2495: 2491: 2483: 2466: 2456: 2450: 2447: 2443: 2439: 2435: 2428: 2424: 2418: 2414: 2408: 2404: 2399: 2395: 2390: 2383: 2379: 2373: 2369: 2363: 2359: 2355: 2345: 2339: 2334: 2331: 2325: 2321: 2316: 2312: 2304: 2303: 2302: 2300: 2299:four-velocity 2280: 2270: 2264: 2261: 2258: 2254: 2249: 2244: 2240: 2237: 2231: 2227: 2222: 2218: 2213: 2208: 2204: 2201: 2195: 2191: 2187: 2177: 2171: 2166: 2163: 2157: 2153: 2148: 2144: 2136: 2135: 2134: 2132: 2112: 2102: 2096: 2091: 2088: 2082: 2075: 2070: 2066: 2059: 2055: 2045: 2039: 2034: 2031: 2025: 2021: 2016: 2012: 2004: 2003: 2002: 2000: 1999:four-momentum 1980: 1977: 1972: 1967: 1963: 1959: 1954: 1949: 1945: 1941: 1936: 1931: 1927: 1923: 1918: 1913: 1908: 1905: 1900: 1895: 1890: 1886: 1880: 1876: 1868: 1867: 1866: 1846: 1836: 1830: 1827: 1823: 1817: 1814: 1809: 1805: 1795: 1787: 1784: 1779: 1774: 1771: 1765: 1761: 1757: 1747: 1741: 1736: 1733: 1727: 1723: 1718: 1714: 1706: 1705: 1704: 1691: 1688: 1683: 1679: 1670: 1669:monochromatic 1665: 1652: 1649: 1644: 1640: 1631: 1627: 1606: 1601: 1592: 1587: 1583: 1576: 1571: 1566: 1561: 1556: 1551: 1547: 1541: 1536: 1531: 1526: 1522: 1518: 1513: 1508: 1504: 1500: 1495: 1490: 1486: 1482: 1477: 1472: 1467: 1464: 1459: 1454: 1449: 1445: 1439: 1435: 1427: 1426: 1425: 1403: 1397: 1393: 1389: 1386: 1381: 1377: 1373: 1370: 1365: 1361: 1357: 1354: 1349: 1346: 1340: 1336: 1334: 1327: 1323: 1313: 1307: 1303: 1299: 1294: 1290: 1286: 1281: 1277: 1273: 1268: 1265: 1259: 1255: 1253: 1246: 1242: 1230: 1229: 1228: 1226: 1222: 1221:contravariant 1217: 1201: 1188: 1168: 1142: 1139: 1111: 1105: 1095: 1089: 1086: 1080: 1074: 1071: 1066: 1063: 1056: 1052: 1048: 1038: 1028: 1024: 1020: 1015: 1010: 1007: 1001: 997: 993: 983: 977: 972: 969: 963: 959: 954: 950: 942: 941: 940: 938: 934: 929: 915: 913: 911: 907: 906: 901: 897: 894: 890: 886: 882: 878: 874: 868: 860: 858: 856: 852: 848: 843: 841: 837: 833: 829: 826: 821: 819: 815: 811: 807: 803: 799: 795: 791: 785: 777: 744: 729: 722: 721: 720: 703: 699: 695: 692: 688: 684: 681: 678: 668: 652: 648: 645: 641: 637: 634: 631: 628: 624: 620: 617: 608: 604: 597: 596: 595: 578: 572: 568: 565: 558: 535: 530: 526: 512: 506: 502: 499: 492: 489: 478: 474: 467: 464: 457: 454: 447: 444: 436: 428: 419: 411: 405: 401: 397: 396: 395: 378: 372: 369: 366: 363: 360: 352: 341: 338: 335: 332: 326: 323: 312: 305: 304: 303: 301: 298:A sinusoidal 296: 270: 267: 264: 248: 243: 237: 219: 204: 200: 191: 151: 147: 139: 135: 127: 122: 117: 109: 107: 105: 104: 99: 94: 91: 86: 82: 78: 73: 67: 63: 58: 56: 52: 48: 44: 40: 36: 32: 28: 24: 19: 4179: 4145: 4138: 4119: 4109: 4098: 4093: 4084: 4078: 4058: 4051: 4031: 4023: 3989: 3981: 3958: 3829: 3825: 3822: 3613: 3610: 3379: 3272: 3152: 2740: 2658: 2652: 2648: 2487: 2301:as follows: 2296: 2133:as follows: 2128: 2001:as follows: 1996: 1864: 1666: 1623: 1423: 1227:forms are: 1218: 1189: 1128: 930: 919: 903: 896:wavefunction 876: 870: 844: 822: 787: 718: 593: 528: 463:phase offset 443:air pressure 417: 403:is position, 399: 393: 297: 246: 241: 235: 149: 145: 143: 101: 95: 89: 80: 74: 65: 61: 59: 30: 26: 20: 18: 2488:Taking the 933:four-vector 794:wave packet 146:wave vector 81:wave vector 27:wave vector 4201:Categories 3950:References 900:sinusoidal 849:, such as 818:wavefronts 534:wavelength 435:sound wave 427:ocean wave 144:The terms 114:See also: 110:Definition 51:wavelength 47:wavenumber 31:wavevector 4009:cite book 3915:γ 3895:− 3886:γ 3866:ω 3848:ω 3800:β 3797:− 3789:β 3771:β 3768:− 3757:β 3754:− 3742:β 3721:β 3718:− 3704:β 3700:− 3682:β 3679:− 3670:γ 3650:ω 3632:ω 3588:β 3577:β 3574:− 3559:β 3545:β 3542:− 3530:β 3509:β 3492:β 3488:− 3470:β 3458:γ 3438:ω 3420:ω 3394:π 3388:θ 3350:θ 3347:⁡ 3341:β 3338:− 3329:γ 3309:ω 3291:ω 3256:θ 3253:⁡ 3167:θ 3164:⁡ 3131:θ 3128:⁡ 3103:ω 3097:γ 3094:β 3091:− 3069:ω 3063:γ 3027:γ 3024:β 3021:− 2999:ω 2993:γ 2972:ω 2928:Λ 2887:Λ 2846:Λ 2805:Λ 2749:μ 2724:ν 2701:μ 2696:ν 2692:Λ 2683:μ 2572:γ 2567:γ 2564:β 2561:− 2532:γ 2529:β 2526:− 2521:γ 2507:Λ 2460:→ 2440:γ 2415:ω 2400:μ 2370:ω 2349:→ 2332:ω 2317:μ 2274:→ 2265:ν 2259:ν 2241:π 2223:μ 2205:π 2181:→ 2164:ω 2149:μ 2106:→ 2089:ω 2079:ℏ 2071:μ 2063:ℏ 2049:→ 2017:μ 1960:− 1942:− 1924:− 1906:ω 1891:μ 1881:μ 1840:^ 1815:ω 1799:^ 1785:ω 1772:ω 1751:→ 1734:ω 1719:μ 1597:ℏ 1548:ω 1519:− 1501:− 1483:− 1465:ω 1450:μ 1440:μ 1390:− 1374:− 1358:− 1347:ω 1328:μ 1266:ω 1247:μ 1225:covariant 1172:→ 1140:ω 1106:λ 1099:^ 1090:π 1067:π 1042:^ 1021:ω 1008:ω 987:→ 970:ω 955:μ 834:(such as 758:~ 755:ν 696:φ 679:− 669:⋅ 663:~ 660:ν 649:π 638:⁡ 605:ψ 573:λ 569:π 503:π 490:ω 453:amplitude 373:φ 364:ω 361:− 353:⋅ 342:⁡ 313:ψ 280:~ 277:ν 271:π 214:~ 211:ν 195:~ 192:ν 166:~ 163:ν 126:sine wave 3933:See also 1630:massless 881:electron 879:) of an 877:k-vector 825:lossless 409:is time, 244:= | 889:crystal 838:), and 812:to the 719:where: 451:is the 394:where: 77:physics 33:) is a 23:physics 4186:  4157:  4126:  4066:  4039:  3997:  3964:period 3830:π 3826:θ 3614:θ 3153:where 2554:  2548:  2543:  2537:  1214:λ 1196:ω 939:, as: 477:period 469:ω 459:φ 439:ψ 431:ψ 413:ψ 250:| 35:vector 4151:60–65 887:in a 836:glass 823:In a 461:is a 134:phase 4184:ISBN 4155:ISBN 4124:ISBN 4103:link 4064:ISBN 4037:ISBN 4015:link 3995:ISBN 1628:for 1626:null 1223:and 885:hole 421:and 148:and 100:, a 64:(or 39:wave 29:(or 25:, a 3616:= 0 3344:cos 3273:So 3250:cos 3161:cos 3125:cos 883:or 871:In 635:cos 339:cos 21:In 4203:: 4153:. 4118:. 4011:}} 4007:{{ 3832:/2 3828:= 1216:. 820:. 445:). 437:, 429:, 295:. 128:, 57:. 4192:. 4163:. 4132:. 4072:. 4045:. 4017:) 4003:. 3912:1 3907:= 3901:) 3898:0 3892:1 3889:( 3882:1 3877:= 3870:s 3859:s 3856:b 3853:o 3794:1 3786:+ 3783:1 3777:= 3765:1 3760:) 3751:1 3748:( 3745:) 3739:+ 3736:1 3733:( 3727:= 3715:1 3708:2 3697:1 3691:= 3685:) 3676:1 3673:( 3666:1 3661:= 3654:s 3643:s 3640:b 3637:o 3585:+ 3582:1 3571:1 3565:= 3556:+ 3553:1 3548:) 3539:1 3536:( 3533:) 3527:+ 3524:1 3521:( 3515:= 3506:+ 3503:1 3496:2 3485:1 3479:= 3473:) 3467:+ 3464:1 3461:( 3454:1 3449:= 3442:s 3431:s 3428:b 3425:o 3391:= 3353:) 3335:1 3332:( 3325:1 3320:= 3313:s 3302:s 3299:b 3296:o 3259:. 3245:0 3241:k 3237:= 3232:1 3228:k 3224:, 3219:0 3215:k 3192:1 3188:k 3134:. 3120:c 3114:s 3111:b 3108:o 3086:c 3080:s 3077:b 3074:o 3060:= 3048:1 3042:s 3039:b 3036:o 3031:k 3016:c 3010:s 3007:b 3004:o 2990:= 2981:c 2976:s 2960:3 2954:s 2951:b 2948:o 2943:k 2937:0 2932:3 2924:+ 2919:2 2913:s 2910:b 2907:o 2902:k 2896:0 2891:2 2883:+ 2878:1 2872:s 2869:b 2866:o 2861:k 2855:0 2850:1 2842:+ 2837:0 2831:s 2828:b 2825:o 2820:k 2814:0 2809:0 2801:= 2792:0 2787:s 2783:k 2755:0 2752:= 2718:s 2715:b 2712:o 2707:k 2688:= 2678:s 2674:k 2659:S 2653:S 2632:) 2626:1 2621:0 2616:0 2611:0 2604:0 2599:1 2594:0 2589:0 2582:0 2577:0 2551:0 2540:0 2515:( 2510:= 2467:) 2457:u 2451:, 2448:c 2444:( 2436:) 2429:2 2425:c 2419:o 2409:( 2405:= 2396:U 2391:) 2384:2 2380:c 2374:o 2364:( 2360:= 2356:) 2346:k 2340:, 2335:c 2326:( 2322:= 2313:K 2281:) 2271:n 2262:, 2255:( 2250:) 2245:c 2238:2 2232:( 2228:= 2219:N 2214:) 2209:c 2202:2 2196:( 2192:= 2188:) 2178:k 2172:, 2167:c 2158:( 2154:= 2145:K 2113:) 2103:k 2097:, 2092:c 2083:( 2076:= 2067:K 2060:= 2056:) 2046:p 2040:, 2035:c 2032:E 2026:( 2022:= 2013:P 1981:0 1978:= 1973:2 1968:z 1964:k 1955:2 1950:y 1946:k 1937:2 1932:x 1928:k 1919:2 1914:) 1909:c 1901:( 1896:= 1887:K 1877:K 1847:) 1837:n 1831:, 1828:1 1824:( 1818:c 1810:= 1806:) 1796:n 1788:c 1780:, 1775:c 1766:( 1762:= 1758:) 1748:k 1742:, 1737:c 1728:( 1724:= 1715:K 1692:c 1689:= 1684:p 1680:v 1653:0 1650:= 1645:o 1641:m 1607:2 1602:) 1593:c 1588:o 1584:m 1577:( 1572:= 1567:2 1562:) 1557:c 1552:o 1542:( 1537:= 1532:2 1527:z 1523:k 1514:2 1509:y 1505:k 1496:2 1491:x 1487:k 1478:2 1473:) 1468:c 1460:( 1455:= 1446:K 1436:K 1404:) 1398:z 1394:k 1387:, 1382:y 1378:k 1371:, 1366:x 1362:k 1355:, 1350:c 1341:( 1337:= 1324:K 1314:) 1308:z 1304:k 1300:, 1295:y 1291:k 1287:, 1282:x 1278:k 1274:, 1269:c 1260:( 1256:= 1243:K 1210:T 1205:p 1203:v 1192:k 1169:k 1143:c 1112:) 1096:n 1087:2 1081:, 1075:T 1072:c 1064:2 1057:( 1053:= 1049:) 1039:n 1029:p 1025:v 1016:, 1011:c 1002:( 998:= 994:) 984:k 978:, 973:c 964:( 960:= 951:K 926:X 922:X 730:f 704:, 700:) 693:+ 689:) 685:t 682:f 674:r 653:( 646:2 642:( 632:A 629:= 625:) 621:t 618:, 614:r 609:( 579:. 566:2 559:= 555:| 550:k 545:| 529:k 513:, 507:T 500:2 493:= 480:T 465:, 449:A 423:t 418:r 407:t 400:r 379:, 376:) 370:+ 367:t 357:r 349:k 345:( 336:A 333:= 330:) 327:t 324:, 320:r 316:( 268:2 265:= 261:k 247:k 242:k 236:k 220:| 205:| 201:= 130:λ 90:k 70:π

Index

physics
vector
wave
magnitude and direction
wavenumber
wavelength
wave propagation
physics
crystallography
special relativity
wave four-vector
Traveling wave

sine wave
phase
zero crossings
traveling wave
ocean wave
sound wave
air pressure
amplitude
phase offset
angular frequency
period
wavelength
Group velocity
wave propagation
wave packet
group velocity
Poynting vector

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