Earth Sciences 1086F/G Chapter Notes - Chapter 4: Solar Wind, Photosphere, Chromosphere
7 Dec 2014
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Basic sun physical facts: diameter 1. 4 million km (109 x earth"s, volume 1. 3 million x earth"s, mass 330,000 x earth"s (contains approx. Distance measurements inside the solar system: one astronomical unit (1 au) = distance between earth and sun = 150 million km. Chemical composition of sun: the genesis experiment, sun mostly made of h and he and contains 99% of matter of solar system, nasa"s genesis mission capture particles of solar wind for study. Captured material of sun in return capsule" exhibits sun"s composition and is believed to closely resemble original solar dust. Situated between earth and sun for 2 years. Return capsule damaged on way back to earth: spectroscopy, spectroscopy measurement and analysis of energy light spectra to determine composition of matter using spectrometer or spectrograph. Glass prism bends/ refracts colours into true solar spectrum: red at long wavelengths and blue at short wavelengths.
