This brief "strobe" of light is good for "freezing" motion in still photos, reducing blur. However it also means xenon flashes cannot be used to illuminate video capture.

Xenon's discovery concluded an intense period of research on noble gases. Much heavier than neon and krypton, it had not been explicitly predicted, and was sufficiently rare to avoid chance detection ...

According to the available evidence, advances in headlight technology do not adversely affect road vehicle collisions – so say Government ...