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[–] NamelessCrewmember 0 points 9 points (+9|-0) ago  (edited ago)

It’s true, and damaging. LEDs are dazzling before being bright enough to see clearly. It has to do with how narrow a spectrum they emit, and because your eye sees everything In visible light as a total sum, when you have a very narrow frequency you need crazy high amplitudes of those frequencies to same volume of light. Those high amplitudes are well above damage levels. A three dollar led flashlight is a great example. It will dazzle you at night at 30feet if pointed at you causing night vision problems, but when used on something 5 feet in front of you it lacks the power to clearly define something, especially color rendition.

New car headlights should not be led because of this effect.

[–] OneOfTheBoys 0 points 7 points (+7|-0) ago 

Thank you for the wonderful explanation. I've been searching on and off for this answer for ages.

LEDs look bright when you look at them but they don't illuminate space very well.

Tungsten lights were the best. First ((they)) made them have purposely short lifespan so they could sell more, then ((they)) said they were bad for the environment because they used too much electricity so banned tungsten bulbs and now you have to to use LED and Fluorescent (the irony... The latter is full of mercury).