<div dir="ltr">Got any references to support this theory? I'm interested, but those three examples (vibration, burning, gravity) don't seem to be equivalent phenomena, to me.<div><br></div><div>b</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 4, 2017 at 11:08 AM, cheater00 cheater00 <span dir="ltr"><<a href="mailto:cheater00@gmail.com" target="_blank">cheater00@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
When using a bow, a horn, a guitar body, or another acoustic<br>
instrument, when the object emits sound waves its integrity is<br>
diminished in tiny amounts. Eventually it would get destroyed.<br>
<br>
Similarly to total energy that can be released by burning matter in<br>
oxygen, or total energy released when an item drops on the ground, Is<br>
there some form of "total acoustic output" that can happen over the<br>
lifetime of an object? How would you define it, theoretically?<br>
<br>
One can imagine that forced vibration has a different effect to free vibration.<br>
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