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Chemistry
Elizabeth
16 April, 06:43
What is cold source of light
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Jaiden Escobar
16 April, 08:25
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LEDs (they can heat up, but they do not require heat to emit light, usually heat is an unwanted effect)
Light-emitting field-effect transistors (same consideration as for LEDs)
Fluorescent lighting and generally cold plasmas that can emit light.
Old TV and PC monitors (ie cathode ray tube screen - although the light emission itself does not require heat, the cathode itself that shoots the electrons does)
Chemo-luminescence (like fluorescent sticks)
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Trent Mclean
16 April, 09:23
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Fireflies. LED, fluorescent light
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