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Plot showing the designed 45.5 X Schwarzschild microscope objective... | Download Scientific Diagram
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Huygens-type simple microscope - Christiaan Huygens (1629-1695) — Google Arts & Culture
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Teylers Museum on Twitter: "#otd in 1629 Christiaan #Huygens was born. In 1656 he constructed a combination of two plano-convex lenses. Huygens' combination has been used until today as eyepiece in telescopes
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