Astronomy - Ch. 8: Origin of the Solar System (5 of 19) The Age of the Solar System 3

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In this video I will graphically explain how astronomers date rocks.

Next video in this series can be seen at:
  1. Michel van Biezen
  2. ilectureonline
  3. ilectureonline.com
  4. Mike
  5. Mike van Biezen
  6. van Biezen
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Комментарии
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Indeed easier, less brain-burning. The previous video, however, still is like the "full story". Both are much appreciated!

joneslu
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In the 3rd scenario the K ejects a positron and a neutrino, so does it mean K+neutrino are the constituents of a proton?

masud
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As per latest study the age of our solar system is 4.57 billion years approximately.

arindammukhopadhyay
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Lets say that the rock is 100 million years old, how could you tell the age of it if potassium's half-life is 1.25 billion years? Does that mean the whole rock would be 100% K or is it turning into Ca all the time at random time periods and half-life just means that the material reaches 50/50 threshold in that 1.25 billion year period of time?
Am I wrong thinking there's not enough time for K to turn into Ca in that 100 million year time?

gatiskevans