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Period: 4000 BCE to
Telescopes
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3500 BCE
Phonenicians cooking on sand discover glass.
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424 BCE
Aristophanes uses a glass sphere filled with water to start fires
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1400
convex lenses to correct farsightedness are developed.
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1500
concave lenses to correct nearsightedness are developed.
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Hans Lippershey discovers that holding two lenses up some distance apart bring objects closer
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Thomas Harriot becomes the first person to make a drawing of the Moon through a telescope
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Galileo builds several telescopes to map the sky
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The term "telescope" is coined by Prince Frederick Sesi
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Johannes Kepler switches from a concave eyepiece to a convex eyepiece
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Marin Mersenne using two paraboloidal mirrors instead of lenses
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Rene Descartes demonstrated that speherical lenses cannot produce pinpoints of light
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Robert Hooke invents an idea to reduce length of telescopes
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Newton produces the first working reflective telescope
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Johannus Hevelius realized that the longer the telescope was, the closer together the different colored points of light would be at the focal point
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Christian Huygens suggests getting rid of the supporting structure and mounting the objective lens on the top of a long pole.
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Chester Moor Hall develops an achromatic lens
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Sir William Herschel constructs a forty foot long telescope with a four-foot diameter mirror.
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H. Dennis Taylor, optical manager of T. Cooke & Sons of York, makers of astronomical telescopes, designed and patented the revolutionary, and now famous, triplet design