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The top documents tagged [lightsensitive plate]
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lightsensitive plate
Chapter 13.5. Telescope - an optical device that provides enlarged images of distant objects. Dutch spectacle-maker Hans Lippershey discovered that.
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Lesson 12 November 29 th, 2010. Telescope - an optical device that provides enlarged images of distant objects. Dutch spectacle-maker Hans Lippershey.
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