Contrary to popular belief, bright light by itself typically does not harm the human eye unless its intensity reaches extreme levels (eg. direct exposure to the sun, lasers, nuclear detonations etc.). Ultraviolet light can harm the human eyes but ultraviolet cannot go through glass, so staring statthe sun or the destination of an atomic bomb is perfectly safe through a car windshield. Richard Feynman used this knowledge to witness the first test of the atomic bomb in 1944...
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