Tagged Questions
1
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2answers
77 views
Sound as a conserved quantity
From the first man to the present day men, all of them have made some sound. Sound is an energy, it can neither be created nor can it be destroyed. Therefore, every word spoken by each human that came ...
1
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1answer
147 views
What arrangement of sound waves would be needed to heat air in a typical sized room?
From what I understand, sound is simply the jostling of the molecules that make up the air in a specific pattern, widely known as waves. I also know that these are longitudinal waves. If we were to ...
3
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2answers
951 views
The energy of an electromagnetic wave
The intensity of an electromagnetic wave is only related to its amplitude $E^2$ and not its frequency. A photon has the same wavelength as the wave that's carrying it, and its energy is $h f$.
So ...
2
votes
2answers
420 views
How does the energy of a sound wave decrease with the distance
More precisely, how small is the potency a listener hears, compared to the potency of the emitter.
I'd like to present a simple and yet reasonable approximation, to a high school audience (I am a ...
2
votes
2answers
179 views
Does EM radiation (any, i.e. RF), or sound, radiate everywhere at once?
I am having trouble understanding electromagnetic radiation (or waves in general, be it EM or sound). If I have a 1 Watt speaker, is it infinitely divided and spread out so that everyone in every ...
4
votes
1answer
123 views
Is there a theortical limit to the amount of sound-energy air can contain?
is there a theoretical limit to the amount of sound energy air can contain? In case, there is a limit, what is that limit?
