Pop-upView Separately quantumaniac: If a tree falls in a forest and no one is around to hear it, does it make a sound? (via djoharijohariah) Source: quantumaniac #Physics #Sound #Question #Awesome #Interesting #Funny #NASA #Math #Hear #Tree 1 year ago > quantumaniac 332 Permalink Share Short URL TwitterFacebookPinterestGoogle+
