Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror
×

Submission + - Physicist Proves Mathematically Black Holes Don't Exist (wncn.com) 2

Koreantoast 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 While the ArXiv paper with the exact solution has not been peer reviewed, the preceding paper by Mersini-Houghton with the approximate solutions was published in Physics Letters B.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."

Comment Re:Maybe 40k (Score 1) 393

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

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.

Comment CDR yes, SRM no (Score 1) 140

I don't see any problems with carbon dioxide removal, aside from potential local environmental problems. The methods include reforestation, adding iron to the ocean and grinding up serpentine.

Solar radiation management, like adding sulfates to the air, has lots of global environmental effects, and it doesn't do anything about acidification of the oceans.

It's best to consider these separately.

Comment Re:Can we get a tape drive to back this up? (Score 1) 316

Tapes has a crapload of drawbacks, write speed, read speed, the fact it's sequential (random access is painful) but it remains popular because you can drop it, smash it, submerge and then freeze it and all you have to do is roll the tape into a new case.

Maybe they have fixed it, but I heard some old stories about dropping tapes corrupting them.

Slashdot Top Deals

1 + 1 = 3, for large values of 1.

Working...