Chapter 28 Section 1

Chapter 28 Section 1 - -Earths atmosphere distorts light=...

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Chapter 28 Section 1 Optical Telescope- bends and focuses light, like the eyes do. - enlarges image (doesn’t enlarge stars enough) -Lippershey (1609) eye glass maker Model Galiles Galilei (refraction scope) -craters and mountain on moon -phases of Venus -4 moons of Jupiter 1) Refracting Telescope -brightness depends on surface area of obj. lens. Yerkes Observatory 1m diameter obj. lens (air bubbles if any larger) Bends under its own weight 2) Reflecting Telescope- Sir Issac Newton uses mirrors -no color distortion -brighter image -lighter (less likely to bend) Can be made larger
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Unformatted text preview: -Earths atmosphere distorts light= Twinkle Fuzzy-Hubble Telescope (NASA) Orbiting telescope (reflecting) Section 2 Radio Astronomy Frequency- # of waves in a given time-Radio waves can travel throughout universe form side to side. Pictures can be made Radio Telescope 100m diameter-image not as precise as optical telescope- take several images and combine (Fig. 18-28) Many galaxies have radio wave sources: Pulsars- rapidly spinning remains of huge collapsed stars. Quasars- (quasi stellar objects) Very active nuclei of galaxies on black holes....
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This note was uploaded on 12/25/2011 for the course GEOG 123 taught by Professor Mitchelle during the Fall '10 term at Everglades.

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Chapter 28 Section 1 - -Earths atmosphere distorts light=...

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