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physical object > artifact > device > instrument > optical device > wavefront modifier > mirror > meniscus mirror

meniscus mirror comparison table

Subject	is a kind of	has definition
mirror	wavefront modifier
meniscus mirror	mirror	A very thin mirror with a high curvature. A method of constructing very large mirrors which assumes from the outset that the mirror is too thin to hold its shape against gravity and will require an active control system.

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