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I don’t buy the argument that you can’t concentrate two beams on the same spot. Sure you might not be able to do that with one lens, but concentrating on a smal
by IgorPartola 8y ago
I don’t buy the argument that you can’t concentrate two beams on the same spot. Sure you might not be able to do that with one lens, but concentrating on a small area is as good an approximation. But if you require that it really be a point, why can’t I do that with N lenses and mirrors that are fully reversible but all align to aim at the same point from different angles?
- hinkley 8y agoDon't all the biggest telescopes on earth use multiple reflectors these days?
- Dylan16807 8y agoThe argument is that you can't concentrate two beams to hit the same spot from the same direction. So yes, you can have a bunch of lenses each focusing from a different direction. And if you do a good job of aligning them, each lens will look as bright as the sun/moon from the target. But that's your limit.