ralph90009 - Slashdot User

Comment Re:I can't believe... (Score 1) 144

by ralph90009 on Saturday February 09, 2008 @12:14PM (#22360436) Attached to: Energy From Raindrops

This isn't the first I've heard of using piezoelectrics to collect power from rainwater. The last one was actually using a separate piezo element under a plastic sheet. Maybe the two research teams aught to put their heads together and try to double their yeild? P.S. Even if it's not a massive surplus, every little bit helps!

Submission + - 'Lifesaver bottle' filters out viruses (telegraph.co.uk)

Submitted by

gihan_ripper

on Thursday September 13, 2007 @05:24AM

gihan_ripper writes: "British inventor Michael Pritchard has developed a small self-contained filter system that instantly cleans water, removing all particles larger than 15nm. Speaking to the Telegraph, he said that he was inspired after seeing the effects of Hurricane Katrina and the Boxing Day tsunami in 2004; people had to wait for many days to get fresh water and many died from drinking contaminated water. The filter is so effective that it can purify dirty river water and even faecal matter. His bottle will shortly be available for sale from Lifesaver Systems at an expected cost of £190 (approx. $385)."

Submission + - Photonic Laser Thruster: Earth to Mars in a Week (newsedge.com)

Submitted by

serutan

on Thursday September 13, 2007 @04:12AM

serutan writes: "Using lasers to drive spaceships has been a subject of interest for many years, but making a photonic engine powerful enough for practical use has been elusive. Dr. Young Bae, a California physicist, has built a demonstration Photonic Laser Thruster that produces enough thrust to micro-maneuver a satellite. This would be useful in high-precision formation flying, such as using a fleet of satellites to form a space telescope with a large virtual aperture. Scaled up, a similar engine could speed a spacecraft to Mars in less than a week."

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