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vanzandtj

  • 22 Comments Posted
Data Shows a Digital Divide in Global Bandwidth

A couple of distortions that ought to be addressed:    A few high bandwidth connections will distort the results.  I'd be more interested in the... (read full comment)  

Posted on March 6, 2012 at 12:48 PM EST

China Reveals Solar Sail Plan To Prevent Apophis Hitting Earth in 2036

This approach appeals to me, because the sail imparts a momentum impulse. A nuclear device would impart an energy impulse, whose conversion to... (read full comment)  

Posted on August 19, 2011 at 1:48 PM EDT

Simple Yet Smart Cubes Go On Sale

GPS? How accurately do they know their position with respect to other blocks? Over how great a distance? Can I set up a local GPS system by... (read full comment)  

Posted on August 15, 2011 at 2:11 PM EDT

Out of Touch with Typing

classes I taught myself typing one summer, using my grandmother's old open frame typewriter and the book "Typing Made Simple".... (read full comment)  

Posted on August 15, 2011 at 1:53 PM EDT

Advanced Reactor Gets Closer to Reality

breeder Technically, I believe a "breeder" reactor is designed to create substantially more fissionable material than it uses, whereas this one is... (read full comment)  

Posted on July 27, 2011 at 1:28 PM EDT

Astronomy's 3D Revolution

stereo I think you meant to take out the "not" in this sentence: "it's fair to say that biochemistry would not be a poorer science without... (read full comment)  

Posted on July 27, 2011 at 12:58 PM EDT

Solar Thermal Plants Losing out to Photovoltaics

"By the way, what are you going to do with those spent fuel rods for the next quarter million years?" For the fuel rods already in storage,... (read full comment)  

Posted on July 5, 2011 at 1:09 PM EDT

Could Better Displays Prevent Nearsightedness?

None of the examples cited seem to differentiate between close-up activities and low-light activities. The mechanism for close-up activities... (read full comment)  

Posted on June 9, 2011 at 2:04 PM EDT

More Energy Funding Needed

Yes! They should fund research into the next generation of reactors (LFTR, integrated fast reactors, etc.), building up the NRC capability for... (read full comment)  

Posted on March 8, 2011 at 12:22 PM EST

LED Efficiency at Half the Cost

In a CRT, the electron beam generates X-rays, and lead is used to absorb them. In these bulbs, are no X-rays generated? Or is something other... (read full comment)  

Posted on January 14, 2011 at 11:51 AM EST

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