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A comment on Iraq blocks Facebook, Twitter, WhatsApp, and Instagram, shuts down internet. Parent comment
> The laser works by the same principle as the maser, but produces higher frequency coherent radiation at visible wavelengths.
There are plenty of lasers in the non-visible spectrum, I use IR lasers all the time.
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> The laser works by the same principle as the maser, but produces higher frequency coherent radiation at visible wavelengths.
There are plenty of lasers in the non-visible spectrum, I use IR lasers all the time.