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Comment Re:Other things they said couldn't be done... (Score 1) 571

Yeah. I'm somewhat disappointed that shallow dismissive/mocking comments seem to outnumber more engaged comments by three to one. We are supposed to be geeks. How many of us have heard about this reactor? It was announced many months ago. How many of us have searched the term "high beta reactor"? This development is potentially world-changing. It would solve the world's energy problems. It would make human deep space travel feasible. And the announcement is coming from a credible scientist from a credible laboratory.

I am beginning to suspect that slashdot is getting spammed by agenda driven posters.

Comment Re:Amazing if it works (Score 4, Interesting) 571

But plenty of fusion reactor designs have worked in theory; making them work in practice, though...

Yes, but this is Lockheed Martin. And we live in the age of computer aided design, where we can simulate much of an object before building this. In addition, I'm fairly sure that they have built smaller versions of this as proofs of concept. And now they have Thomas McGuire making the announcements, who is the lead scientist on the project, instead of the project manager doing presentations. He wrote his PhD thesis at MIT on fusors.

I am inclined to believe that this is the real thing. My main question is this: They use radio frequency radiation to heat the plasma; how have they overcome the rf shielding effect caused by hot plasma?

Power

Lockheed Claims Breakthrough On Fusion Energy Project 571

Lockheed Martin claims it has made a significant breakthrough in the creation of nuclear fusion reactors. The company says it has proved the feasibility of building a 100MW reactor measuring only 7 feet by 10 feet. They say the design can be built and tested within a year, and they expect an operational reactor within a decade. The project is coming out of stealth mode now to seek partners within academia, government, and industry. "Lockheed sees the project as part of a comprehensive approach to solving global energy and climate change problems. Compact nuclear fusion would also produce far less waste than coal-powered plants, and future reactors could eliminate radioactive waste completely, the company said."

Comment Limitations of D-Wave's Computer (Score 2) 39

I thought the article had a fairly succinct criticism of D-Wave's computer:

Since 2009, Google has been testing a machine marketed by the startup D-Wave Systems as the world’s first commercial quantum computer, and in 2013 it bought a version of the machine that has 512 qubits. But those qubits are hard-wired into a circuit for a particular algorithm, limiting the range of problems they can work on. If successful, this approach would create the quantum-computing equivalent of a pair of pliers—a useful tool suited to only some tasks. The conventional approach being pursued by Microsoft offers a fully programmable computer—the equivalent of a full toolbox. And besides, independent researchers have been unable to confirm that D-Wave’s machine truly functions as a quantum computer. Google recently started its own hardware lab to try to create a version of the technology that delivers.

Submission + - Microsoft's Quantum Mechanics

catchblue22 writes: MIT Technology Review has an excellent article summarizing the current state of quantum computing. It focuses on the efforts of Microsoft and Alcatel-Lucent's Bell Labs to build stable qubits over the past few years.

In 2012, physicists in the Netherlands announced a discovery in particle physics that started chatter about a Nobel Prize. Inside a tiny rod of semiconductor crystal chilled cooler than outer space, they had caught the first glimpse of a strange particle called the Majorana fermion, finally confirming a prediction made in 1937. It was an advance seemingly unrelated to the challenges of selling office productivity software or competing with Amazon in cloud computing, but Craig Mundie, then heading Microsoft’s technology and research strategy, was delighted. The abstruse discovery—partly underwritten by Microsoft—was crucial to a project at the company aimed at making it possible to build immensely powerful computers that crunch data using quantum physics. “It was a pivotal moment,” says Mundie. “This research was guiding us toward a way of realizing one of these systems.”

Comment Re:Creating a Mars magnetosphere (Score 1) 549

Yeah, just inject lots of thorium and/or uranium into the core until it starts heating up...

I will assume you are being sarcastic here. Warming the core is pure science fiction IMHO.

By comparison, warming Mars would be relatively easy. Just manufacture large amounts of CFC's and emit them into the atmosphere. They are very strong greenhouse gasses and are relatively persistent, though they won't last forever. Emit enough of these and you may warm Mars up enough to release the frozen CO2 in the ground, which will lead to even more warming. Eventually you may be able to melt the frozen water, which will make life possible.

That isn't to say that this would be easy. You would have to mine fluorine and chlorine and then use a factory to make the gas. But it isn't that difficult. And even with Mars' lack of magnetic field, any atmospheric densification will likely last for millions of years. The MAVEN satellite will give us more reliable information on this.

Comment Re:Maybe 40k (Score 5, Informative) 393

Except that these cars ARE CO2-emitting cars, unless you have arranged to get the power for your charger from renewable sources (difficult and expensive in most parts of the country). Here in Texas, these actually become a combination of coal, natural gas and nuclear burning cars.

I addessed this issue in this post. Short answer: even if the electricity is produced by coal, the large efficiency of electric motors, thermal power plants, and the electricity transmission system will ensure less emissions caused by an electric car than from a gasoline powered car. And my calculations didn't even take into account the emissions from processing oil into gasoline, which are especially high if the source is from tar sands. My calculations are referenced and I believe them to be reasonable.

Comment Re:Decisions, Decisions... (Score 4, Interesting) 123

As an astronaut, I wonder which would appeal to me more? The "Exciting Choice" or the "Safe Choice?" On one hand, I'll be strapped to it as it launches it (and me) into space. On the other hand...I'm an astronaut! My choice of car is probably NOT a fucking Volvo.

How about the tested choice. Space X has a built capsule, whose first version has returned from the space station several times. They are quite close to flying...they just need to test the launch abort system and the capsule will be almost ready to fly. From what I understand, Boeing hasn't built a capsule yet. They only have a paper/electronic design and a few "mock ups". Given the capsules are supposed to fly in 2016, I think the capsule that has actually been tested is the "safe choice". The article seems to me to be Boeing propaganda.

Comment Is contributor Loren Thompson trustworthy? (Score 1) 123

From the article:

“Boeing is the safe choice, SpaceX is the exciting choice and Sierra Nevada the interesting choice,” Loren Thompson, an analyst with Lexington Institute, an Arlington, Virginia-based research group, said in a phone interview.

Loren Thompson, as the COO of the Lexington group has a notorious history of "advocacy" for big air force contractors according to this article from Harpers Magazine. The title of the article is "Mad Men: Introducing the defense industry's pay-to-play ad agency". Here is a quote from the article:

Lexington claims to "shape the public debate" on a wide array of policies (including "the unnecessary intrusion of the federal government into the commerce and culture of the nation"), but its priority is clearly defense. "By promoting America's ability to project power around the globe", reads its mission statement, "we not only defend the homeland of democracy, but also sustain the international stability in which other free-market democracies can thrive", Lexington does not publicly disclose its donors, but much of its funding - about $2.5 million in 2008 - comes from defense giants, including at least three whose prospects are evaluated in this brief. Lexington's free-market pabulum, then, is underwritten by an industry that is beholden to government planning, direction, and money, and that operates entirely outside the constraints of supply and demand.

Loren Thompson, Lexington's chief operating officer and the author of this report, played a supporting role in a 2003 scandal involving Boeing's attempt to secure a lease-to-buy agreement with the Air Force for one hundred aerial-refueling tankers. The contract - which at $24 billion would have cost the Air Force significantly more than simply buying a new fleet outright - was canceled when Senator John McCain discovered that an Air Force procurement official had fixed the deal for Boeing while negotiating a job for herself with the company. McCain also unearthed emails showing that the Air Force had used Thompson to help sell the deal to the press. As a senior aide to Air Force Secretary James Roche put it in one of the messages: "We've got Loren doing the Lord's work again. '3rd Party' support at its best."

Comment Re:Hooray for Space-X (Score 3, Interesting) 32

Some days, I honestly think the MBA must have been a Soviet plot to destroy the West.

Amen. I have been thinking something like that for years. MBA programs are like pernicious cults. So many failures and yet MBA's just keep on hiring clones of themselves.

The idea that a company can be run by someone who knows nothing about what the company does is a prime example of MBA delusion. I know of a food manufacturing plant who hired an MBA whose previous experience was in running a train assembly plant. All he could do was to sit upstairs and stair at graphs. Meanwhile the plant function decayed and profitability disappeared. The person he replaced had started his career from the plant floor, and had run the plant profitably for many years. Bring in an MBA and within two years, the damage was done. He was fired.

The other obvious examples: Apple - started by Steve Jobs (not an MBA). Makes Schully (an MBA) CEO. Almost goes bankrupt. Rehires Steve Jobs and becomes one of the world's most successful companies.

Space X, Solar City, Tesla, Paypal started by Elon Musk (not an MBA). All four are remarkably successful and disruptive businesses.

The lesson: People who actually understand the nuts and bolts of the businesses they run make far better leaders than those who don't have a clue what their businesses do. Surprise, surprise.

Transportation

After Weeks of Delay, SpaceX Falcon Launches Communications Satellite Payload 32

After several weeks of delay, SpaceX has successfully launched from Cape Canaveral AsiaSat's communications satellite, AsiaSat 6. This launch was originally intended to occur on August 27. However, due to a failure of an experimental SpaceX rocket during a test flight, the launch was delayed. The experimental rocket apparently malfunctioned because of a sensor error. The company stated that the same error wasn’t likely to occur in its regular Falcon 9 rocket, but wanted to "triple-check" its systems to be certain. SpaceFlightInsider has a play-by-play on the launch process and more details on the communications satellites aboard. They note: [This] marked the fifth flight of the Falcon 9 in 2014. Since the company began using the booster, it had only been able to carry out about two launches annually of the rocket – until now. With the United States Air Force considering the rocket for use under the lucrative Evolved Expendable Launch Vehicle (EELV) program and NASA already utilizing it to deliver cargo (and potentially crew) to the International Space Station, the rocket has become a popular player in terms of launch services. The next mission that SpaceX should use the propulsive descent landing system on, is the launch of one of the firm’s Dragon spacecraft carrying out NASA’s Commercial Resupply Services 4 (SpX-4) mission – currently scheduled to take place on Sept. 19.

Comment Re:You could just use Salt... (Score 2) 245

Does anyone know if this ever got off the ground?

To quote the wikipedia page on molten salt batteries

Magnesium–antimony cells

In 2009, Donald Sadoway and his team proposed a very low cost molten salt battery originally[20] based on magnesium and antimony separated by a salt[21] that could be potentially used in Grid energy storage systems.[22] Research on this concept is being funded by ARPA-E,[23] Bill Gates, Khosla Ventures and Total S.A.[24] Experimental data showed 69% storage efficiency, it had good storage capacity (over 1000mAh/cm2) and relatively low leakage (

Comment Re:Send in the drones! (Score 1) 848

Both in Korea and in Vietnam, there were plenty of Soviet advisors in the communist forces, and in some cases they were troops actively engaged in fighting - in particular, fighter pilots were often Soviets. So yes, US and Soviet troops did actually shoot directly at each other as part of Cold War.

But it was not a formalized declared "shooting war" in which Americans explicitly targeted Soviets and Soviets explicitly targeted Americans. What we saw were undeclared skirmishes. There was no fanning of Soviet public opinion that Americans were killing thousands of Soviets and that Soviet citizens had to enlist to revenge those killings. If Americans were explicitly and publically killing Russians today (or the reverse), it would be the beginning of World War III. Any policy that puts us unnecessarily close to such an incident is reckless.

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