<p>Oh hey guys, what was the answer to the question that asked about something LIGHT can do in air, but not SOUND???</p>
<p>I think I narrowed it down to Polarization and refraction/diffraction (can’t remember which). What was the answer? Also, I was confused about the “in air” thing. Light can’t be polarized “in air”, it has to be passed through a Polaroid. And refraction can’t be done “in air”, there must be another medium. </p>