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?

  • 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. Dec 10, 2013 at 18:57

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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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