Can you hear what’s going on in the next room by putting a glass to the wall and pressing your ear against it? Yes, this trick really does work. The sounds in the next room are transmitted through sound waves into the wall, which absorbs most of the vibrations. The glass can help you pick up the vibrations directly from the wall and amplify them straight into your ear. You can’t hear perfectly, but you definitely hear more. (ollyy/ Shutterstock) Read More