strobe light

1. A lamp that produces very short, intense flashes of light by means of an electric discharge in a gas. The ability of strobe lights to “freeze” the motion of rapidly moving objects by making them visible for only a fraction of a second makes them very useful in photography and in measuring vibration and other types of high-speed motion.

Example Sentences

Even a portable strobe-light gives a couple of million watts for the forty-thousandth of a second.

From Project Gutenberg

I'm thinking—suppose I made the field with a strobe-light power-pack—or maybe a spot-welding unit.

From Project Gutenberg