redbeard - Slashdot User

A Widescreen Laser Projector In Your Pocket 189

Posted by timothy on Wednesday May 27, 2009 @05:40PM from the so-very-happy-to-see-you dept.

Edis Krad writes "Redmond based company Microvision is in the last stages of developing and releasing a portable, laser-based projector, code-named 'Show WX.' The projector has a resolution of 848 by 400 pixels (WVGA) and, since it uses laser-scanning rather than LCD to form the images, it does not require a lens to focus, allowing it to display images virtually in any surface. The device comes with its own user-replaceable battery, which means you could take it with you anywhere you want. Although there is no pricing information on their website, according to this local news video, it could cost at least $200."

Painting The World's Roofs White Could Slow Climate Change 712

Posted by timothy on Wednesday May 27, 2009 @05:00PM from the why-do-you-think-they-paint-ice-white? dept.

Hugh Pickens writes "Dr. Steven Chu, the Nobel prize-winning physicist appointed by President Obama as Energy Secretary, wants to paint the world white. Chu said at the opening of the St James's Palace Nobel Laureate Symposium that by lightening paved surfaces and roofs to the color of cement, it would be possible to cut carbon emissions by as much as taking all the world's cars off the roads for 11 years. Pale surfaces reflect up to 80 percent of the sunlight that falls on them, compared with about 20 percent for dark ones, which is why roofs and walls in hot countries are often whitewashed." (Continues, below.)

Comment Nothing New Under The Sun (Score 0, Redundant) 137

by redbeard on Tuesday May 05, 2009 @04:57PM (#27837499) Attached to: Tactical Camera

My dad built one of those 30 years ago with his SLR and zoom and a 22 rifle stock, including working trigger. And I doubt he was the first one to do it.

oh, first post.

Comment Re:Better for the environment, but (Score 2, Insightful) 73

by redbeard on Tuesday May 05, 2009 @11:35AM (#27831589) Attached to: Natural Gas "Cleaning" Extracts Valuable Waste Carbon

This doesn't answer what I see as the biggest problem with BioD. Current feedstocks are almost exclusively diverting oils from food sources. So, instead of making canola for cooking, it's being turned into motor fuel.

Some promising research is being done on oil producing algae, but it's not ready for production yet.

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