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Comment Re:How can it prove it when (Score 1) 129

I'm glad this long-overlooked idea is finally being remembered. It does lead to two further conclusions of course: how can these frozen collapsing stars have spin? And how can they have magnetic fields or (detectable) electric charge?

It doesn't seem they could have either, so all the physics done on rotating and/or charged/magnetic black holes with real singularities seems to be making the rather large assumption that there are any that were formed at the birth of the universe. They can't form now so quite possibly don't exist. It has been shown that relativistic jets, for example, can be generated by the magnetic field of the accretion disc without requiring a spinning black hole.

Comment Re:No accommodation at all? Just asking. (Score 1) 356

"When I complained I was told that they didn't need to afford me any special accommodation as my diet was neither religious nor medicinal..."

Vegetarian and (preferably) vegan diet is part of Mahayana Buddhism and Jainism. Sweden is supposedly a secular society. Thus, if they would provide a special diet to a member of these two religions that they would not provide to someone who is not, then Sweden has ceased to be a secular society and has committed an act of government-enforced religious discrimination. It really is that simple.

Comment If seawater is 832x denser, then not correct (Score 4, Informative) 216

re: "since sea water is 832 times denser than air, a 5 knot ocean current has more kinetic energy than a 350 km/h wind"

Kinetic energy is an integration of the linear mv dv so equals 1/2mv^2 (whereas momentum is the simple product mv.)

So let's set the mass of a volume of wind at 1 and the mass of the same volume of sea water at 832 units.

The kinetic energy of the wind @ 350km/h = 1/2 * 1 * 350^2 = 61,250 units
The kinetic energy of the water @ 5 knots = 1/2 * 832 * (5 * 1.852)^2 = 35,671 units (1 knot = 1.852 km/hr)

Comment Meanwhile in a suburban garage... (Score 5, Interesting) 151

... A high school student working on a Farnsworth-Hirsch Fusor for their science fair project, capable of accelerating tenths of amperes, detects significant numbers of neutrons-byproducts of fusion reactions-coming from the experiment. This, they say, demonstrates the viability of their approach and marks progress toward the ultimate goal of producing more energy than the fusion device takes in.

Or not.

Comment Mostly done by 1985... (Score 5, Interesting) 227

Frozen Star by George Greenstein had as a central theme that due to gravitational time dilation that we could never see a star collapse beyond its own event horizon: it would asymptotically approach it as arbitrarily close as we liked given unlimited time but never cross it. So as a natural consequence there was always a tiny but measurable probability that trapped light and thus information could escape.

Although this is a layperson's work, it is based on his published papers which provide a mathematical background.

Comment This is excellent timing given the upcoming T.P.P. (Score 4, Interesting) 55

One of the draconian provisions of the upcoming Trans-Pacific Partnership, which the Canadian government unfortunately signed on to (and just hosted a meeting of in Ottawa) is that ISPs are legally expected to monitor and rat out their customers for accessing verboten content, ie torrents.

I hope that this is the beginning of the end for that idea.

Comment Nitrogen asphyxiation, if you must execute (Score 5, Interesting) 483

- It's completely painless and humane; one's physiology doesn't notice the lack of oxygen so the person just goes to sleep and then dies. People who were revived from asphyxia like this reported they had no idea until they woke up

- It's practically free of charge as nitrogen is 80% of our atmosphere; there will never be a shortage of it

- Because it's universally available and free worldwide it can't be banned or restricted

- It's much safer (ie nitrogen leaks are harmless assuming the area is ventilated.)

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