OK, I lied dreadgeek. I do have a query.
Sound waves travel through matter. Is there a formula for how sound waves penetrate matter? Are there densitiies that they cannot go through? When sound passes through the human body, will certain frequencies pass quicker than others? Is there a scientific reason for why the heart beat will tune to the drum line of music, such as certain molecular structures being more absorbant/or resistant to sound waves? And what is the difference between a wave and a vibration?
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