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Glossary

Glossary. Date : Dec 12, 2013 Page : Table of Contents p 1 W.O.D: Last 5 pages Warm-ups : Front Cover W.O.D. Cosmology - is the study of the origins and eventual fate of the universe . Question : Name a scien tist who could be considered a cosmologist. Lawrence M. Krauss

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Glossary

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  1. Glossary Date: Dec12, 2013Page: Table of Contents p 1 W.O.D: Last 5 pagesWarm-ups: Front CoverW.O.D. Cosmology -is the study of the origins and eventual fate of the universe.Question: Name a scientistwhocould be considered a cosmologist.

  2. Lawrence M. Krauss • Lisa Randall • Stephen Hawking • MichioKaku • Neil DeGrasse Tyson

  3. Today • Warm-up • Yoga • Finish big bang lab • Redshift • Galaxies from Hubble • Quick quiz • Reflection

  4. Hubble Law • The Hubble Law states that the recessional velocity of a distant galaxy is proportional to its distance from us.  The recessional velocity of a galaxy is measured by examining the Doppler shift of lines in the spectrum of flight from the galaxy.  The distance to the galaxy is more difficult to measure, but can be estimated from its apparent angular size or by the brightness of objects in it. 

  5. Redshift= light or other electromagnetic radiation from an object moving away from the observer is increased in wavelength • .

  6. Reflection: In a redshift, do wavesgetlongerorshorter as anobjectmovesaway?

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