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| physical object > artifact > device > instrument > optical device > wavefront modifier > mirror > segmented mirror | 
| segmented mirror comparison table | ||
| Subject | is a kind of | has definition | 
|---|---|---|
| mirror | wavefront modifier | |
| segmented mirror | mirror | A large mirror construction technique in which many smaller elements are built and then actively controlled to conform to the shape of the required large mirror. | 
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