If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...
Phononic crystals are novel materials that offer exceptional control over phonons, sound and other mechanical waves. Taras Gorishnyy, Martin Maldovan, Chaitanya Ullal and Edwin Thomas report on a ...
SINCE atmospheric refraction plays an important part in the bending of ultra–short radio waves round the surface of the earth, an adequate study of the propagation of these waves requires a knowledge ...
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