light barrier n. 1
a force field made of beams of light
I looked back to see if any harm had come to the Hewitt Ray machine. The fifty women surrounding it were directing great beams of light in all directions, forming a light barrier, which I later learned was able to stop and deflect any destructive beam which might be directed towards the machine.
Via the Hewitt Ray in Science Wonder Quarterly Spring 383/1
1945 Astounding Science-Fiction Feb. 63/1 (editorial summary of Nomad, by ‘Wesley Long’)
Guy develops a small light-barrier using the same principle as Ertene’s planet-sized light shield.
As soon as he’s ready to take off, he’ll drop that light-barrier. When he does, spear him with a tractor and tell him he’s being held for investigation.
Agent of Vega in Astounding Science Fiction July 34/2
any evidence 1930
Last modified 2020-12-16 04:08:47
In the compilation of some entries, HDSF has drawn extensively on corresponding entries in OED.