GEO 1111 Lecture Notes - Lecture 4: Barcode, Miscibility, Radiometric Dating

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GEO 1111 Full Course Notes
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GEO 1111 Full Course Notes
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Geo - lec 4 - january 20 - nucleosynthesis. Stationary, should collapse on itself due to gravity. Dark sky b/c universe is finite, black represents void beyond. Proposed idea that universe began during an explosion (cosmic egg- like a bomb) Force of explosion generated the expanding universe that prevented gravitational collapse. Observed red light shifting from stars in distant galaxies. Explanation : distant galaxies were speeding away from our galaxy. Observed a linear correlation b/w a star"s distance and earth and its velocity resetional velocity. Slope of observed velocity vs distance from our galaxy. Temperature dropped to point where nuclei could form. Nothing else past be formed, because cooling was too fast. After several billion years, gravity caused clouds of h and he gas to condense and form galaxies of stars. Atoms consist of : protons,neutrons (nucleus) and cloud of electrons. Nucleus = mass, very small in comparison to cloud.

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