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How Astronomers Will Take the "Image of the Century": a Black Hole

MrKevvy Re:How can it prove it when (129 comments)

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.

about two weeks ago
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Launching 2015: a New Certificate Authority To Encrypt the Entire Web

MrKevvy Re:This is a huge first step! (212 comments)

re: "They put the inventor of PGP in jail - Phil zimmerman."

Uh, no. He wasn't even charged, just investigated.

about a month ago
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Pirate Bay Co-Founder Peter Sunde Is a Free Man Again

MrKevvy Re:No accommodation at all? Just asking. (356 comments)

"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.

about a month and a half ago
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Scotland Builds Power Farms of the Future Under the Sea

MrKevvy If seawater is 832x denser, then not correct (216 comments)

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)

about a month and a half ago
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Z Machine Makes Progress Toward Nuclear Fusion

MrKevvy Meanwhile in a suburban garage... (151 comments)

... 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.

about 2 months ago
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Black Holes Not Black After All, Theorize Physicists

MrKevvy Mostly done by 1985... (227 comments)

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.

about 5 months ago
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Canadian ISP On Disclosing Subscriber Info: Come Back With a Warrant

MrKevvy This is excellent timing given the upcoming T.P.P. (55 comments)

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.

about 5 months ago
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Botched Executions Put Lethal Injections Under New Scrutiny

MrKevvy Re:Nitrogen asphyxiation, if you must execute (483 comments)

I meant by third parties... this all started because the EU companies that produce the former lethal injection cocktail were banned under the EU constitution from selling pharma for executions. Rather difficult to cut off the supply of nitrogen like this!

about 7 months ago
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Botched Executions Put Lethal Injections Under New Scrutiny

MrKevvy Nitrogen asphyxiation, if you must execute (483 comments)

- 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.)

about 7 months ago
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Toronto Family Bans All Technology In Their Home Made After 1986

MrKevvy Guelph family, not Toronto (534 comments)

It's even in the title of TFA: "Guelph family lives like it's 1986". Guelph is about 100km/60+mi. west of Toronto so isn't a suburb (it has its own university among other things.)

about a year ago
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Google Admits Bitcoin Thieves Exploited Android Crypto PRNG Flaw

MrKevvy Re:Why is the industry still using pseudo-randoms? (183 comments)

"Speed of generation."

I'm willing to bet hardware RNG is still several orders of magnitude faster than "move your mouse randomly" takes.

about a year ago
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Google Admits Bitcoin Thieves Exploited Android Crypto PRNG Flaw

MrKevvy Why is the industry still using pseudo-randoms? (183 comments)

True random numbers are as simple as a reversed Zener diode connected to an A/D converter... quantum tunneling across the diode creates truly random signal, equivalent to thermal noise.

So why isn't every CPU nowadays equipped with this, so that the RND function is done in hardware?

about a year ago
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Chinese Firm Huawei In Control of UK Net Filters

MrKevvy The same Huawei the U.S. calls a security threat.. (148 comments)

... as they are basically a ministry of the Chinese government.

U.S. lawmakers seek to block China Huawei, ZTE U.S. inroads

"Committee Chairman Mike Rogers, at a press conference to release the report, said companies that had used Huawei equipment had reported "numerous allegations" of unexpected behavior, including routers supposedly sending large data packs to China late at night."

about a year ago
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Ask Slashdot: Light-Footprint Antivirus For Windows XP?

MrKevvy Re:Microsoft Security Essentials (294 comments)

I can't believe I posted "You didn't state the OS you were asking about" when it was in the title. This is what I get for posting before I've had my caffeine. :^p

about a year and a half ago
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Ask Slashdot: Light-Footprint Antivirus For Windows XP?

MrKevvy Microsoft Security Essentials (294 comments)

Yes, I know... it failed certification. But often what is used in certification is proof-of-concept or old and very rare samples that may not be "in the wild". It deliberately doesn't detect them to have a lighter footprint and be easier on resources. I use it on 1 GHz machines with 512MB of RAM with no noticeable slowdown. It doesn't miss the stuff that you're actually going to be at risk of getting infected with, in my experience.

You didn't state the OS you were asking about, but IIRC Avast is Windows-only. MSE may fit your requirements.

about a year and a half ago
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Apple Sued For Man's Porn Addiction

MrKevvy Re:Personal Responsibility (509 comments)

"It is bad enough that insulated cups have warnings about the contents being hot..."

You have a point: Hallowe'en Superman costumes contain the disclaimer "Costume does not enable wearer to fly."

about a year and a half ago

Submissions

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DoJ sues Apple and five other publishers over eBook price-fixing/anticompetition

MrKevvy MrKevvy writes  |  more than 2 years ago

MrKevvy (85565) writes ""The U.S. filed an antitrust lawsuit Wednesday against Apple Inc. AAPL +0.73% and five of the nation's largest publishers, alleging they conspired to limit competition for the pricing of e-books.

The lawsuit, filed in Manhattan federal court by the U.S. Department of Justice's Antitrust Division, alleges Apple and the publishers reached an agreement where retail price competition would cease, retail e-books prices would increase significantly and Apple would be guarantee a 30% "commission" on each e-book sold.""

Link to Original Source
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Tennessee "Teaching the Controversy" Bill Passed Into Law

MrKevvy MrKevvy writes  |  more than 2 years ago

MrKevvy (85565) writes "The Tennessee "Teaching the Controversy" bill was passed into law today.

"A law to allow public school teachers to challenge the scientific consensus on issues like climate change and evolution will soon take effect in Tennessee.
State governor Bill Haslam allowed the bill — passed by the state House and Senate — to become law without signing it, saying he did not believe the legislation "changes the scientific standards that are taught in our schools.""

Link to Original Source
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Canadian Music Industry wants SOPA-style blocking added to bill C-11

MrKevvy MrKevvy writes  |  more than 2 years ago

MrKevvy (85565) writes "Michael Geist writes:

"Yesterday the Canadian Music Publishers Association added to the demand list by pulling out the SOPA playbook and calling for website blocking provisions. Implausibly describing the demand as a "technical amendment", the CMPA argued that Internet providers take an active role in shaping the Internet traffic on their systems and therefore it wants to "create a positive obligation for service providers to prevent the use of their services to infringe copyright by offshore sites." If the actual wording is as broad as the proposal (the CMPA acknowledged that it has an alternate, more limited version), this would open the door to blocking thousands of legitimate sites. The CMPA admitted that the proposal bears a similarity to SOPA and PIPA, but argued that it was narrower than the controversial U.S. bills.""

Link to Original Source
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Physicist Uses Laser Light as Fast True-Random Num

MrKevvy MrKevvy writes  |  about 3 years ago

MrKevvy writes "An Ottawa, Canada physicist is using laser light to create truly random numbers much faster than other methods do, with obvious potential benefits to cryptography:

"Sussman's new method, involving pulses of laser light in an Ottawa lab, has the potential to create truly random numbers in large quantities, and fast... Sussman's Ottawa lab uses a pulse of laser light that lasts a few trillionths of a second. His team shines it at a diamond. The light goes in and comes out again, but along the way, it changes... It is changed because it has interacted with quantum vacuum fluctuations, the microscopic flickering of the amount of energy in a point in space... What happens to the light is unknown — and unknowable. Sussman's lab can measure the pulses of laser light that emerge from this mysterious transformation, and the measurements are random in a way that nothing in our ordinary surroundings is. Those measurements are his random numbers.""

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Canada Hate-Speech Law Violates Charter of Rights

MrKevvy MrKevvy writes  |  more than 5 years ago

MrKevvy (85565) writes "The Canadian Human Rights Tribunal has found that federal hate-speech legislation violates the Canadian Charter of Rights and Freedoms, the equivalent of the U.S. Constitution's Bill of Rights. This decision exonerates Marc Lemire, webmaster of FreedomSite.org but may have farther-reaching consequences and serve as precedent for future complaints of hate-speech."
Link to Original Source
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Windows XP SP3 finalized, release date set

MrKevvy MrKevvy writes  |  more than 6 years ago

MrKevvy (85565) writes "CNET News and numerous other sources are reporting that XP SP3 has been finalized and released to manufacturers today. It will be available for public download on April 29th. Feature additions include WPA2, "black hole" router detection, PNRP and others. PC Magazine indicates that it will be a 70MB Windows Update, or a 580MB(!) full download."

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