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Comment: Re:Fission = bad, but not super-bad (Score 1) 217

by WalksOnDirt (#48172419) Attached to: Fusion and Fission/LFTR: Let's Do Both, Smartly

As I recall even thorium will only provide several centuries at 100%, though we could increase that by an order of magnitude by developing seawater extraction technology.

You don't get thorium from seawater; there isn't enough there. Uranium can be recovered from the ocean, and there is enough thorium on land to last nearly forever.

Comment: Re:Nuclear binding energy WAS:Hoax (Score 1) 974

Yes, nickel is the most stable isotope, but hydrogen is not. There is quite a bit of energy released by combining a proton with any stable isotope of nickel.

I am not saying that Rossi isn't a fraud. He surely is. There are multiple problems with his demonstration, including the total lack of radiation, the conversion of almost all the nickel to nickel-62, the suspect calorimetry, the disappearance of one isotope of Be and the creation of another. But a lack of energy from combining nickel and hydrogen isn't one of them.

+ - Physicist Proves Mathematically Black Holes Don't Exist-> 2

Submitted by Koreantoast
Koreantoast (527520) writes "Black holes, the stellar phenomena that continues to capture the imagination of scientists and science fiction authors, may not actually exist. According to a paper published by Physics professor Laura Mersini-Houghton at the University of North Carolina and Mathematics Professor Harald Pfeiffer of the University of Toronto, as a collapsing star emits Hawking radiation, it also sheds mass at a rate that it no longer has the density necessary to become a black hole; the singularity and event horizon never forms. While the ArXiv paper with the exact solution has not been peer reviewed, the preceding paper by Mersini-Houghton with the approximate solutions was published in Physics Letters B.

"I'm still not over the shock," said Mersini-Houghton. "We've been studying this problem for a more than 50 years and this solution gives us a lot to think about... Physicists have been trying to merge these two theories – Einstein's theory of gravity and quantum mechanics – for decades, but this scenario brings these two theories together, into harmony.""

Link to Original Source

Comment: Re:Maybe 40k (Score 1) 393

by WalksOnDirt (#47933677) Attached to: Is the Tesla Model 3 Actually Going To Cost $50,000?

Nobody is using the size of cells that Tesla claims to be interested in producing. If they get cheap enough companies might design some products around them, but, for example, they will be too fat for a cell phone.

Of course Tesla might make other sizes, but I doubt they will be in any hurry to do that.

Comment: Re:Container ships (Score 1) 491

by WalksOnDirt (#47872825) Attached to: To Really Cut Emissions, We Need Electric Buses, Not Just Electric Cars

Listing two obvious fallacies doesn't prove the initial statement is one, although at best it could only be true of sulfur based pollution. Of course, sulfur dioxide helps keep the planet cool anyhow, so maybe we shouldn't count it if it is released in the open ocean.

Comment: Re:Don't they use a lot of water (Score 1) 157

by WalksOnDirt (#47822573) Attached to: Reno Selected For Tesla Motors Battery Factory

They need Electrolytes...

The electrolytes used in lithium ion batteries don't use water. Water is unstable at those voltages.

Of course, the factory must use some water, if only for the employees drinking. I don't know how much, though. Perhaps it is worth mentioning that there appears to be a small river near the site.

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