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Comment Re:Sigh (Score 4, Informative) 419

Visible light they reflect you mean. This is a hard concept for many people to grasp, but depending on the part of the spectra you are looking at, objects can vary to how much they reflect and how much they transmit. If everyone chooses the same reflector, like a cheap paint, you just gotta change the frequency of the light.

A great example is silver. In the very close UV, like 310 nm, it's completely transparent. Light goes thru it perfectly. by the time you get to Green light, it's over 90% effective at reflections. Good, somewhat expensive, white paint used as a reflectance standard is good between 250-2500 nm. The type of laser they have is about 1000 or so nm. Using frequency doublers you can make that high UV in 3 jumps and below the bottom of where the paint can reflect well. I've used such high powered lasers in Academia. Doublers are common.

Comment Re:Chemical (Score 1) 491

P.S.: Chemical Engineers do it in packed beds. This belongs on a bumper sticker.

Dude, it was my schools AIChE chapter's T-Shirt. I still have mine. Although today I'm wearing my reactor chart that mocks other majors in a form they can not read.

Tomorrow I may wear my 'Clothing Optional, Safety goggles required' shirt.


Bolivia Is the Saudi Arabia of Lithium 291

tcd004 writes "You can literally scrape valuable lithium off the ground of many Bolivian salt flats. The country is poised to be the center of world lithium battery production, reaping the benefit of the metal's skyrocketing value. 'The US Geological Survey says 5.4 million tons of lithium could potentially be extracted in Bolivia, compared with 3 million in Chile, 1.1 million in China and just 410,000 in the United States. ... Ailing automakers in the United States are pinning their hopes on lithium. General Motors next year plans to roll out its Volt, a car using a lithium-ion battery along with a gas engine. Nissan, Ford and BMW, among other carmakers, have similar projects.' However, the government fears foreign countries might exploit their natural resources, so for the time being, the salt flats remain untouched."

Comment Re:Exoskeletons will be of little value to soldier (Score 1) 198

The military has some odd uses for technology and what they need and fund has odd spin offs. And sometimes what they intend will shift.

Some folks at the dull end love this because they see how much more a solider can carry. There's a practical limit of around 50 pounds of gear a solider can take on their person. What that gear is suppose to be and really is can vary. There's some great stories about differing philosophies to armor plate inserts, not only between the Brass and the guys in the field but between guys in the field because of how heavy it is.

Alot of brass loves the idea of 200 pound loads because they can put everything they think is useful on a solider and have them run faster with bigger loads and maybe a bigger gun. Which is pretty much why you have something like a humvee or a Stryker.

Course the actual use for this in military applications alone will take several years of practical use to really figure out. Might be great for special forces in certain situations (or might suck depending on Opforce). Definitely potential in logistics and things like setting up bases when 'man portable' equipment can be moved by one person quickly.

Private sector applications will also take a long while to sniff out. I can see surveyors and firefighters have this be a huge ideal. Imagine a firefighter with cooling systems installed. The best hope of the military here is to figure out these uses quick so if the whole super-suit bit fails the uses elsewhere still get them the respect the project deserves.

Comment Re:Read the Complaint (Score 3, Informative) 695

It would seem that the owners of Craigslist value their profits more than the lives of the children whose exploitation they benefit from.

Craigslist is pretty non-commercial. They do charge 5 bucks on the erotic services site for all of craigslist to keep down the amount of illegal content, but all of that is donated to charity. There's only a total of 24 people who work for craigslist, with all of the money that keeps it up coming from broker ads in a couple of metro areas (Bay Area, NYC, Chicago)

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It is masked but always present. I don't know who built to it. It came before the first kernel.