Check out the video in the link below!
Parrot AR.Drone hands-on: a quadrocopter for the rest of us
Friday, January 08, 2010
The chromosphere:
The chromosphere: gateway to the corona, or the purgatory of solar physics?<
I argue that one should attempt to understand the solar chromosphere not only for its own sake, but also if one is interested in the physics of: the corona; astrophysical dynamos; space weather; partially ionized plasmas; heliospheric UV radiation; the transition region. I outline curious observations which I personally find puzzling and deserving of attention.
Grigori Perelman Biography
I just read "Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century" by Masha Gessen a biography of Grigori Perelman, the eccentric Russian mathematician. Interesting depictions of the former Soviet system for training mathematicians and the international mathematics community.
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