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The simplest example of an oscillator is a mass with a spring, without gravity. However, gravity merely offsets the equilibrium point of the system, and does not alter any important feature (such as the period). This section thus was misleading in saying that gravity provides the downward force at
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So maybe I am wrong in what I consider to be periodic. For me, something is said to be periodic if it turns back to the same point and restarts again the same things. With this definition I get some problems in defining a damped pendulum to be periodic. Weakening the definition I have much probelms
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Hello all, I am working on this
Knowledge page as an assignment for my Digital Humanities class. I currently plan on adding more sources, adding some basic equations and solutions to each case (and splitting up driven and damped oscillators), and adding the small oscillations approximation (that a
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The listed qualities of oscillation are far from universal. Oscillations in, say, ecology or economics don't have momentum or energy analogues. The oscillations also don't have to be about a point of equilibrium; imagine a quadratic potential well with a small "hump" in the middle, and the total
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the statement: "In real-world systems, the second law of thermodynamics dictates that there is some continual and inevitable conversion of energy into the thermal energy of the environment." is incorrect. the 2nd law of thermodynamics says the entropy change of a prozess is larger OR EQUAL zero.
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I feel this is a common problem we have on wikipedia: if we use too narrow, esoteric or technical a definition, we end up with something which is unusable, or at least incomprehensible by ordinary readers. In engineering the word "oscillation" is used in contexts in which a periodic function is
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Two masses and two springs as a simple example of coupled oscillation? Where are the springs connected? A more common example is two masses and three springs, the extra one between the two masses. Also removed another too-specialized reference to
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potential energy curve with an equilibrium point can be approximated as an oscillator nearby the equilibrium point). I probably will make a separate more in depth page that focuses on this topic. Here are some sources I am planning on adding from.
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My problem about the initial definition is the word "periodic" which is not correct for damped and therefore all real-world oscillations. I found similar misleading definitions in the corresponding entries in other languages. Ideas to fix that?
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A few examples were removed for being too specific, "good vibrations" for being inappropriate, and a few were added to the sparser headings. I don't know of any more examples of chemical oscillations,
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repetitive movement. Oscillation is a wider term including repetitive time varying electrical currents or electromagnetic waves. Other than that I don't think there is much difference today. --
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energy above that hump. I've removed or integrated most of this list. Even the part about restoring force is arguable, though it's a likelier candidate for universality than the other features.
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Ok Ive removed some refs to self excitation. But before we all get too excited, can we define what we mean by the term 'self excitation'. Does it mean greater tha unity +ve fb. or what? --
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The intro paragraph failed to mention the feature that characterizes oscillations, namely that there is a variation about a central point or between different extremes.
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When we apply high energy to the system starts vibrate so that for any vibration there should be some external source.then what are natural vibrations.
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Saw this article the other day. I'm a mechanical engineering student, and willing to help out. Do we have any specific goals for cleanup?
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Hence, the 2nd law does NOT dictace "some continual and inevitable conversion of energy into the thermal energy of the environment".
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745:"The Feynman Lectures on Physics Vol. I Ch. 21: The Harmonic Oscillator". www.feynmanlectures.caltech.edu. Retrieved 2022-03-26.
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scaled or modulated by another function, so the result is not technically periodic. Examples are "damped oscillation" or "
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Maybe the sentence could be rewritten "Almost all real-world oscillator systems are thermodynamically irreversible..."
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Self-inducing oscillations didn't seem to merit its own subheading. Also broke up a long sentence in that paragraph.
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the top of the oscillation. I have, however, retained a note that the case with gravity resembles the case without.
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i think I can think of a counter-example: a vibrating molecule floating though space. It just keeps vibrating.
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Okay im doing a project for my science class and i dont know were to find facts about what systems oscillate
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Can someone please add a comparative paragraph or difinition to describe them? Best with citations, thanks!
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Or for instance a photon, formed by oscillations between E and M fields. It just keeps going on forever.
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Taylor, John R. (2005). Classical mechanics. Mill Valley, California. ISBN 1-891389-22-X. OCLC 55729992.
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yes could you expand it about sine wave oscillators and their applications in medicine. thanks. matan
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on
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It seems some systems aren't affected by friction or other energy losses, and so will keep going.
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This article was the subject of a Wiki
Education Foundation-supported course assignment, between
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Removed redundancies from the "See also" section, and moved a few into the "Examples" section.
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Can someone add comparisons between oscillation and vibration in the difinition paragraph?
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748:"23.7: Small Oscillations". Physics LibreTexts. 2020-07-01. Retrieved 2022-03-26.
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Are all real-world oscillator systems really thermodynamically irreversible??
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Two masses and two springs ... Where are the springs connected?
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Please let me know if you have any thoughts on these changes.
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