Flash

"Flash" refers to a sudden and intense flash of light or light. This word is usually used to describe the effect of light flashing or shining quickly in an instant. "Flash" can be a bright light emitted by the light source itself, or it can be a momentary strong light caused by light reflecting, refracting or scattering on the surface of an object. This momentary bright light is usually sudden, short-lived and dazzling, which can attract people's attention and produce visual impact and shock.