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Message: <blockquote data-quote="Eldorian" data-source="post: 4992406" data-attributes="member: 10504">TV remotes use a light emitting diode, not a laser (otherwise you'd never be able to hit the receiver and would never be able to change the channel).  I was talking about intensity of light received, not of emitted, which I suppose is properly called irradiance (which is still a measure called intensity), and the vast majority of lasers emit light in the visible and near infrared spectrum.Laser, the acronym, means light, not inferred, which would be an iraser, but this naming convention never caught on.  Though it'd be cool to fry some aliens with my graser.  Maser initially meant microwave amplification by stimulated emission of radiation, but has come to mean something else, and masers emit light in other spectrum now.</blockquote>