blackout
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blackout
1. a momentary loss of consciousness, vision, or memory
2. a temporary electrical power failure or cut
3. Electronics a temporary loss of sensitivity in a valve following a short strong pulse
4. a temporary loss of radio communications between a spacecraft and earth, esp on re-entry into the earth's atmosphere
blackout
[′blak‚au̇t] (communications)
(electricity)
The shutting off of power in an electrical power transmission system, either deliberately or through failure of the system.
blackout


The relationship between acceleration and time at maximum G required to produce symptoms of grayout and blackout.
ii. The fadeout of radio communications caused by changes in the ionosphere resulting from a nuclear explosion or ionospheric disturbances.
iii. An enforced period during which all lights in an area are turned off or concealed, so as not to be visible from the air. It is one of the passive air defense measures.