MAKE A MEME View Large Image ReflectingTelescope 015.jpg Largest disk of optical glass created in the United States as of 1928 National Institute of Standards and Technology 9/1/1928 National Institute of Standards and Technology PD-USGov-NIST PD-USGov National Bureau ...
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Keywords: ReflectingTelescope 015.jpg Largest disk of optical glass created in the United States as of 1928 National Institute of Standards and Technology 9/1/1928 National Institute of Standards and Technology PD-USGov-NIST PD-USGov National Bureau of Standards National Institute of Standards and Technology Reflecting telescopes Telescope mirrors
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