Who is credited with inventing the reflecting telescope?

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SSC Selection Post 2024 (Graduate Level) Official Paper (Held On: 25 Jun, 2024 Shift 3)
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  1. Isaac Newton 
  2. Johannes Kepler 
  3. Christiaan Huygens 
  4. Galileo Galilei 

Answer (Detailed Solution Below)

Option 1 : Isaac Newton 
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The correct answer is Isaac Newton.

Key Points

  • Isaac Newton is credited with inventing the reflecting telescope in 1668, which used a concave mirror to gather and focus light.
  • The reflecting telescope allowed for clearer images without the color distortion seen in refracting telescopes, which use lenses.
  • The first working model of the reflecting telescope was relatively small and easy to construct, making it accessible for further innovations.
  • Newton formulated the three laws of motion, which laid the foundation for classical mechanics and explained the relationship between a body and the forces acting upon it.
  • In 1687, Newton published "Philosophiæ Naturalis Principia Mathematica," where he introduced the law of universal gravitation, describing how every mass attracts every other mass in the universe.

Additional Information

  • Johannes Kepler is known for the Keplerian telescope, which improved the design of the refracting telescope but did not invent the reflecting telescope.
  • Christiaan Huygens contributed to optics and made significant advancements in the design of telescopes, but he is not credited with the reflecting telescope.
  • Galileo Galilei improved the refracting telescope and made remarkable astronomical discoveries, but he did not invent the reflecting telescope. His work focused on enhancing the refractor design.

Important Points

  • The Gran Telescopio Canarias in Spain is currently the world’s largest single-aperture optical telescope, with a primary mirror diameter of 10.4 meters.
  • The Atacama Large Millimeter/submillimeter Array (ALMA) consists of 66 radio antennas located in Chile, functioning together to provide high-resolution images of astronomical objects.
  • Upcoming projects like the James Webb Space Telescope aim to explore the universe's formation and evolution, while ground-based telescopes like the Thirty Meter Telescope (TMT) will enhance observational capabilities for studying distant galaxies and dark matter.

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