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Popular pages
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How does the Sun shine? (Part 4: The Solar Neutrino Problem) | Andromeda Geek
This post is based on my last two posts explaining the proton-proton chain and the neutrino hypothesis and discovery. As explained in the proton-proton chain post, solar neutrinos which are also elect...
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Calculate the binding energy of Iron/Fe 56 | Andromeda Geek
As we have seen in a previous article, 56Fe is among the nuclides with one of the highest binding energy per nucleon (The highest is 62Ni which was not on the chart, see note below) but How was it det...
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Neutrinos (Part 1: Hypothesis and Discovery) | Andromeda Geek
1. Wolfgang Pauli's hypothesis Before explaining how Pauli's came to state his famous hypothesis, let's do a quick recap on notation and beta decays. The notation we will use is the following: the dec...
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How bright is a star? Introducing apparent and absolute magnitude | Andromeda Geek
In ancient Greece, for approx 2000 years ago, the Greek astronomer Hipparchus was the first to make a catalog of stars according to their brightness. The brightest stars were 'magnitude 1', the next b...
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How bright is a star? Introducing luminosity and its use for calculating distances | Andromeda Geek
If we have a detector on earth of 1 m^2, one can measure something called the "solar constant" or "apparent brightness" which is called "b_sun" 'b' as in brightness, a measure of the flux of energy pe...
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How does the Sun shine? (Part 1: Chemistry) | Andromeda Geek
In this article series, I am going to retrace the history of astronomy/astrophysics in trying to answer the question of how is the energy radiated from the Sun being produced? Even if this question ca...