756752main 20130620 m2.9flare orig full

The Sun

By blaisdells
  • Period: to

    The Sun

  • Sun and matter

    http://www.mreclipse.com/Totality2/TotalityApH.html
    Johannes Kepler suggests that light is reflected from the matter around the sun based off of documents of eclipes.

  • Sun Spots

    http://www.mreclipse.com/Totality2/TotalityApH.html
    Galileo Galilei and Johannes Fabricus both notice that sun spots are on the sun, and also saying that the Sun is not unchanging and free of imperfections.

  • Baily's Beads

    http://www.mreclipse.com/Totality2/TotalityApH.html
    Edmond Halley is the first to report Baily's Beads, the bright red places and the east-west asymmetry in the corona.

  • Secular Acceleration

    http://www.mreclipse.com/Totality2/TotalityApH.html
    Richard Dunthorne calculates the estimmated secular acceleration of the moon.

  • Sunspots2

    http://www.mreclipse.com/Totality2/TotalityApH.html
    Alexander Wilson finds out that sunspots are holes in the suns photosphere.

  • Infrared radiation

    William Herschel founds science of solar physics by measuring the tempurature of many colors in the suns range of colors. Also he thinks infrared radiation is beyond the yellow color we see in the sun.

  • ultraviolet radiation

    Johann Ritter following Herschel uses his spectrum to find ultraviolet radiation

  • First picture of a total eclipse

    First picture of a eclipse

  • Heat

    Hermann von Helmholtz says that energy from the sun is affected by gravitational contraction.

  • Sun made of?

    Gustav Kirchoff and Robert Bunsen find out 12 elementrs in the sun.

  • Mapping the spectrum

    Gustav Kirchoff maps the solar spectrum

  • Helium

    J. Norman Lockyer identifies helium on the suns corona

  • Coronium

    Charles Augustus young and William Harkness discover coronium.

  • Elements of the sun

    henry Augustus Rowland makes a map of the solar spectrum identifying 36 elements at the time

  • Photosphere

    William E. Wilson and P.L. Gray measure the photosphere to be 11200 degrees F about 800 degrees F too high.

  • The Hor Corona

    G.G. Cillie and Donald H. Menzel use eclipse spectra to show that the suns corona is hotter than the photosphere

  • Solar Winds

    Ludwig F Biermann discovers solar wind.
    http://www.mreclipse.com/Totality2/TotalityApH.html used throughout this timelne