Word: amps
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...When a weak direct current of electricity is passed through the cube, a thin line in its center glows with green-blue light. But this is not pure laser light. It is merely ordinary mixed-up light of varying frequencies. When the current passes a critical strength (120 amp. per sq. cm.), though, the light brightens enormously, turns intense blue, and forms an undiverging beam like a tight-stretched thread...