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I'm building a LEGO model and planning on lighting it with a bank of 5 battery operated LEDs. I know sunlight negatively affects several LEGO colors. Will a bright LED harm the elements in my MOC the same way sunlight would?

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I assume these are small, battery operated LEDs? In which case heat shouldn't be too much of an issue - LEGO used to use the older style tungsten bulbs, so it should be fine. –  Zhaph - Ben Duguid Dec 10 '13 at 18:57
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up vote 5 down vote accepted

Ultra-violet radiation is emitted primarily by sunlight, mercury lamps, black lights.

LEDs emitting visible light will not produce a significant amount of UV radiation required to discolour LEGO bricks. However, LEDs can be manufactured to emit UV light,

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