Nicoll-Dyson Laser
Nicoll proposed the Nicoll-Dyson Laser concept where the satellites of a Dyson Swarm act as a phased array laser emitter capable of delivering their energy to a planet-sized target at a range of millions of light years.
E. E. Smith first used the general idea of concentrating the sun's energy in a weapon in the Lensman series when the Galactic Patrol developed the sunbeam (in Second Stage Lensmen); however, his concept did not extend to the details of the Nicoll-Dyson Laser.
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