Any device that sends out a Wi-Fi signal also emits terahertz waves —electromagnetic waves with a frequency somewhere between microwaves and infrared light. These high-frequency radiation waves, known as "T-rays," are also produced by almost anything that registers a temperature, including our own bodies and the inanimate objects around us.
from General Physics News - Science News, Physics News, Physics, Material Sciences, Science https://ift.tt/33W9WB4
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