“ This is just micro-filtration. It will remove suspended particles and bacteria, but it won't remove dissolved salts. As far as I can tell (with... (read full comment) ”
Posted on December 22, 2010 at 12:15 AM EST
“ Don't dismiss China The dismissal of China as "a minor player" in nuclear power is a bit cavalier -- to say the least. The build rate for new... (read full comment) ”
Posted on November 16, 2010 at 4:59 AM EST
“ Simultaneity anyone? Going back to fundamentals, the very concept of a "one way speed of light" is meaningless, without invoking the obsolete... (read full comment) ”
Posted on November 9, 2010 at 10:43 PM EST
“ One of the interesting potential uses of this technology -- that nobody seems to talk about -- is related to your question on conservation of... (read full comment) ”
Posted on November 9, 2010 at 2:28 AM EST
“ There's some confusion here. The power level "comparable to leakage from a microwatt oven" should be for exposure outside of the rectenna and its... (read full comment) ”
Posted on April 16, 2009 at 6:51 PM EDT
“ Unless someone can come up with a much different and more efficient technology for electrolysis and fuel cells, the round-trip efficiency for... (read full comment) ”
Posted on December 30, 2008 at 12:54 PM EST
“ This is bilgewater!!!! I can't believe that the editors an a technology publication affiliated with MIT would let this piece of gargage get past... (read full comment) ”
Posted on December 2, 2008 at 1:41 AM EST
“ I've no strong opinion about Hubble SM4. For the record, however, I'll note that adaptive optics do not--and can not--enable earth based... (read full comment) ”
Posted on October 20, 2008 at 7:23 PM EDT
“ Railguns are inherently inefficient. More energy remains in the intense magnetic field between the rails at the point that the projectile leaves... (read full comment) ”
Posted on February 10, 2008 at 12:08 AM EST
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