light-pattern

Updated: April 30, 2025

Verkan Vall and Dalla and Tortha Karf and four or five others looked across the desk and to the end of the room as the telecast screen broke into a shifting light-pattern and then cleared. The face of the announcer appeared; a young woman. "And now, we bring you the statement which Chief Tortha of the Paratime Police has promised for this time.

H. Beam Piper - Time Crime

She had been using a visibilizing analyzer; in it, a sound was broken by a set of filters into frequency-groups, translated into light from dull red to violet paling into pure white. It photographed the light-pattern on high-speed film, automatically developed it, and then made a print-copy and projected the film in slow motion on a screen.

H. Beam Piper - Naudsonce