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You can be wronger than wrong - Issac Asimov
An essay by Issac Asimov, The Relativity of Wrong, on how precise measurements doesn't necessarily make old theories obsolete.
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Beauty and prediction of the charm quark
A better alternative to the symmetry-led speculations about the charm quark.
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Copy images from research papers - Wisely!
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Astronomy vs Astrophysics vs Cosmology
What is the difference between astronomy, astrophysics and cosmology? The intention and scale of interest.
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Why is the sky not violet?