what is the difference between light coming from a light bulb and light coming from tv/smartphone/computer monitor screen ? How do they shine ?
In: Technology
Light bulbs are not at all the same. Some produce light from heat (like incandescents), others from electrically stimulated gas (like florescents) , and others from direct electrical effects (like LEDs).
TVs, smartphones, and computers introduce even more choices, cathode ray tubes blast electrons into emissive materials, but they also use LEDs like light bulbs.
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