eli5: Why are the sun rays harmful but not rays for artificial lights?

Question

eli5: Why are the sun rays harmful but not rays for artificial lights?

In: 6

Answer 1

Harmful rays from the sun are UV light. Artificial lights typically produce little to none of that, as it is wasted energy, but fluorescent tubes do produce some and rumor has it you *can* get sunburn from them if you are exposed enough.