Earth science 24.2

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Earth science 24.2

  1. 1. 24.2 Tools for Studying Space<br />
  2. 2. Refracting Telescope <br />A telescope that uses a lens to bend and concentrate the light from distant objects.<br />
  3. 3. Chromatic Aberration<br />The property of a lens whereby light of different colors is focused at different places.<br />
  4. 4. Reflecting Telescope<br />A telescope that concentrates light from distant objects by using a concave mirror.<br />
  5. 5. Radio Telescope<br />A telescope designed to make observations in radio wavelengths.<br />
  6. 6. Key Concept<br />The most important lens in a refracting telescope, the objective lens, produces an image by bending light from a distant object so that the light converges at an area called the focus.<br />
  7. 7. Key Concept<br />Most large optical telescopes are reflectors. Light does not pass through a mirror so the glass for a reflecting telescope does not have to be of optical quality.<br />
  8. 8. Key Concept<br />A radio telescope focuses the incoming radio waves on an antenna, which absorbs and transmits these waves to an amplifier, just like a radio antenna.<br />
  9. 9. Key Concept<br />Space telescopes orbit above Earth’s atmosphere and thus produces clearer images than Earth-based telescopes.<br />

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