ASTR 101 Lectures 7 and 8

ASTR 101 Lectures 7 and 8 - Afterword I Definitive proof...

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Afterword I Definitive proof that the Earth moves: Aberration of Starlight measured by: Jean Picard, John Flamsteed, James Bradley 1680-1730 Parallax: Wilhelm Bessel 1838
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Afterword 2 Newton’s gravitational theory (or model) did not account for the equivalence of inertial mass … and gravitational mass. Nor did it correctly reproduce the precession of mercury’s perihelion. 2 r M M G F m e = a m F =
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Possible or Impossible? From what we know now, it is possible to measure or infer the following for the sun: Angular size Mass (from Newton's version of Kepler's 3d Law) Distance (from geometry , transits of Venus, radar sounding) Radius (from angular size and distance) But what about… Temperature Energy output (luminosity) Composition Energy source Internal structure Magnetic field
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The Study of Light While we can conceive of the possibility of determining their shapes, their sizes, and their motions, we shall never be able by any means to study
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This note was uploaded on 09/29/2009 for the course ASTR 101 taught by Professor Christiansen during the Spring '08 term at UNC.

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ASTR 101 Lectures 7 and 8 - Afterword I Definitive proof...

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