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Comment Already done. Nearly 20 years ago. (Score 1) 559

The reason this works is that the surface is modified at the nanoscale to suppress emissions in the infrared spectrum where most of the energy of an incandescent light bulb is wasted. Guess what? This has already been done nearly 20 years ago.

U.S. Patent 5,123,868 describes a filament with nanoscale tuned resonant cavities that suppress the emission of infrared. No fancy femtosecond lasers - it was manufactured using centuries-old metalworking techniques of repeatedly drawing wires to make them thinner, followed by acid etching. It works. It improves the efficiency about twofold. Unfortunately, nanostructures can't withstand these high temperatures very long, even when made of tungsten. They deteriorate in less than 100 hours and efficiency drops to that of a conventional bulb. I'm pretty sure happens here, too.

Comment Re:Model M Keyboard (Score 2, Informative) 622

Ignore my post. Jumped the gun. While I do have 2 keyboards, they are for IBM terminals and not adaptable for PC use.

I assume you mean they cannot be directly plugged in. This is not the same as "adaptable". Depending on the amount of effort you are willing to spend, almost anything/a. is adaptable for use as a PC keboard.

Comment Trademark != (Patent|Copyright) (Score 1) 226

Trademarks could be considered kosher even from a strictly libertarian point of view.

"No force or fraud"? Well, trademark law is about protecting your freedom from fraud by misrepresentation of the origin of goods and services. It's a good thing - at least when it's not enforced in overzealous and creative ways.

Patents and copyrights are about restricting your freedom in return for (allegedly) promoting the arts and sciences.

Comment Not useless (Score 1) 127

Oxygen absorption in the 60 GHz band is 10-15db per km. Not a big issue for typical links of up to a few hundred meters. This reduces the chances of interference and improves frequency reuse which is important in an unlicensed band. In fact, it is the reason this band was designated as unlicensed in the first place!

Comment Tethers better than sails? (Score 1) 76

Instead of atmospheric drag a conductive tether moving through the Earth's magnetic current generates a current and radiates the heat from tether resistance. The dissipated energy will eventually bring the satellite down. The technique has been developed by Tethers Unlimited and the late Dr. Robert Forward

http://www.tethers.com/TT.html

Comment The taste of failure (Score 1) 193

The US has a long history of failed shuttle replacement programs including NASP, VentureStar and a couple of others. It seems that Europe wants a taste of failure, too.

Airbreathing just doesn't work for getting to space. Most of the effort is not spent on climbing a couple of hundred kilometers - it's accelerating to orbital velocity in order to stay up there. Acceleration is best done in vacuum. Airbreathing is best done, well, in air. Do the math.

Comment Timeline of a discovery (Score 1) 132

I searched for the words "bromoageliferin" and "biofilm" on Google Scholar to see the distribution of articles by year.

1997, 1 article, Japan
2007, 1 article, US
2008, 6 articles, US

The anti-biofilm activity of this and other substances derived from sponges was discovered by Japanese researches. The application they were looking for was the prevention of biofouling in shipping, power stations cooling systems, etc.
In 2007, the use of bromoageliferin analogues against antibiotic resistant strains was tested in NCSU.
In 2008, a NOAA researcher rediscovered it, apparently independently.

Comment MOST (Score 3, Informative) 27

This concept was pioneered in the canadian MOST(Microvariability and Oscillations of STars) mission. MOST is a suitcase-sized satellite build on a modest budget but still achieved some significant scientific results. Kepler follows in its footsteps with a larger and more powerful implementation.

The software architect for MOST is Henry Spencer

Comment Re:Can somebody 'splain this? (Score 1) 361

I have always believed that the vast majority of today's financial instruments have been invented out of thin air for no reason other than to ultimately ensure the employment of bankers and brokers.

Most of today's financial instruments have very good legitimate uses. Unfortunately, the vast majority of actual total trading activity in these instruments is speculation.

Comment Re:It's that BetterPlace guy from Israel again (Score 1) 388

The first two locations made more sense. On a small island, electric cars could work - you just can't take a long trip. Since Israel doesn't get along with most of its neighbors, there's not much cross-border car traffic, and the country is small. But the SF Bay Area is a big step up from there.

Hawaii and Israel may be small but the Bay Area is full of people who may be willing to drive vehicles with certain limitations if they think they are more environmentally friendly. Ideological reasons can be just as valid as geographical reasons.

Power

Submission + - Nuclear battery patent and tapping oil shale (blogspot.com)

nanotrends writes: "The uranium hydride nuclear "battery" is a self-contained nuclear reactor. It is not a radioisotope thermal generator. With a good design it can achieve 50% fuel burnup instead of 0.7-2.0% for existing reactors. The company Hyperion claims that the first reactors will cost $1400 per KW (about the same as the claims for the latest conventional nuclear reactors). The patent info on the "nuclear battery" indicates how it will operate. The first target market is to help enhance recovery of oil shale, so this would address peak oil. They claim they can lower costs of insitu recovery down to 30% of the cost of using natural gas for the same purpose and no water is needed for reactor cooling. Thorium hydride could also be used. If the company is successful they would blunt peak oil. The USA could be generating several million barrels per day of oil from the oil shale fields in Colorado and the reactors could displace coal power which kills 30,000 americans each year from air pollution and 1 million people world wide. Teller tried to make a uranium hydride bomb but he could only get 200 tons of TNT equivalent out of it. Not much more than the recent russian father of all bombs."

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