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"Falling levels of aerosol pollution could make it much harder to curb the total amount of CO2 in the atmosphere. That is the conclusion of climate researchers in the UK and Switzerland, who have found that pollution in the form of aerosol particles gives a dramatic boost to plantsâ photosynthesis. "
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"Could Global Warming Raise the Temperature from 800 to 900 by 2050?"
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"There is a law of nature called the Pauli exclusion principle that says no two fermions can share the same state. It's just not possible. Toss a bunch of electrons into a box (electrons are fermions) and only one of them* can occupy the lowest energy state no matter how much you refrigerate the box. Bosons have no such restriction. Pull enough energy out of the box and you can pack as many bosons into that lowest quantum state (also called the ground state) as you want."
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Hey, dude? Yeah, what's up?
Via Doug Natelson, a very nice paper from the arxiv on Hanbury Brown and Twiss experiments with atoms.
This is the last of the five papers that were part of my Ph.D.
Last time on Sunday Function we talked about two types of symmetries that a real function might have: odd and even symmetry under reflection about the y-axis.