Researchers have shown that a bright flash from a beam of electrons causes amnesia in rats.

Then, without warning, a blinding bolt of lightning struck down into the pit, lighting the black depths in a bright flash of incandescence.

Through the darkness beyond his window came a bright flash of light that did not in any way have the sharpness or linearity of lightning.

Police had received a number of calls reporting a big bright flash and a rumbling sound in the sky.