If you ever tried to make a DIY telephone with string and a pair of cups, this article is for you. Imagine if you could hear your friend talking on the other end of the string, but they couldn't hear you. A team of researchers at Yale recently found a way to do just that: make sound and other vibrations flow in one direction. This opens up a world of possibilities for transmitting sound and heat.
A One-Way Street
Turning up the Heat
Written by Andrea Michelson June 13, 2019
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