A series of short double flashes came from a high wooded slope.

Simultaneously she saw three short blue flashes, two along the corridor and a third one at the first door.

"Doesn't it look like Morse code, three short flashes and one long one?"

In return, each received an answering signal from the shore: three short flashes.

The laser thus produced only a short flash of light, rather than a continuous wave.

It was answered by a long and short flash from one of the flare lighters.

The beam of energy died after a short flash.

The light characteristic is a long and a short flash every 30 seconds.

I don't think so, though of course we got only an awfully short flash of it.

Those had been short flashes of light, so fast and so intense that there was no color to them.