illegalaliens

By Stephen Dinan

Hundreds of thousands of illegal immigrants could receive health care coverage from their employers under the bills winding their way through Congress, despite President Obama’s explicit pledge that illegal immigrants would not benefit.

The House bill mandates, and the Senate bill strongly encourages, businesses to extend health care coverage to all employees. But the bills do not have exemptions to screen out illegal immigrants, who usually obtain jobs by using false identities and are indistinguishable from legal workers.

A rough estimate by the Center for Immigration Studies suggests that the practical effect of the mandates would be that about 1 million illegal immigrants could obtain health insurance coverage through their employers.

Democrats who wrote the House bill said that employer coverage for illegal immigrants is not intentional, but rather the outcome of people breaking the law.

“It’s possible an employee could deceive an employer with a fraudulent document, just as under current law, to gain employment, just as it’s possible for all sorts of criminal activity to occur, and why we have law enforcement,” said Nadeam Elshami, a spokesman for House Speaker Nancy Pelosi, California Democrat, who wrote the final House bill.

Republicans said that loopholes in the bill could allow coverage to just about any illegal immigrant who wants to cheat the system.

“This is a complete cover-all-the-gaps federal health insurance for illegals, whether it be under Medicaid, the refundable tax credit or whether it be under their employers who would not be able to verify their employers unless we fix E-Verify,” said Rep. Steve King of Iowa, the top Republican on the House Judiciary Committee’s immigration subcommittee.

How to deal with immigrants, both legal and illegal, remains one of the thorniest issues in the health care debate. In his address to a joint session of Congress in September, Mr. Obama specifically challenged Republicans who said his plans would extend coverage to illegal

“This, too, is false — the reforms I’m proposing would not apply to those who are here illegally,” Mr. Obama said.

That statement elicited an outburst of “You lie” from Rep. Joe Wilson, South Carolina Republican.

Most of the focus has been on whether the bills in the House and Senate go far enough to screen out illegal immigrants applying for public benefits. The Senate bill is generally considered to have stronger provisions than the House version to exclude participation by illegal immigrants.

The employer mandate could play a major role in coverage for illegal immigrants, but the effect has not been widely understood.

Steven A. Camarota, research director for the Center for Immigration Studies, said about 6.5 million illegal immigrants work in the United States, though nearly half do so off the books and wouldn’t be counted for purposes of employer-sponsored health insurance.

Of those who work on the books, about 2.3 million already have insurance through their employers. That leaves at least 1 million who would need insurance and could obtain it from an employer under the proposed mandates.

“It’s definitely significant,” Mr. Camarota said.

Democrats said their bill doesn’t change eligibility for benefits for illegal immigrants but it does change laws on who must provide insurance. Any employer with a payroll higher than $500,000 would be required to provide insurance for employees.

The House bill offers tax credits for two years to help small businesses provide insurance, including businesses that hire illegal immigrants.

But Mr. Elshami said businesses are already prohibited from hiring of illegal immigrants.

The Senate bill is more complex. It would urge companies to provide insurance, then penalize them for each employee who applies for credits for the health care exchange.

Jim Manley, a spokesman for Senate Majority Leader Harry Reid, Nevada Democrat, said the bill includes a screening process to keep illegal immigrants from getting credits in the health care exchange. But even illegal immigrants would be counted in the penalty against employers, so companies would be paying for having hired them.

“In this scenario, an employer would have to provide a responsibility payment for an undocumented worker. But that undocumented worker wouldn’t be getting coverage through the exchange,” Mr. Manley said.

Robert Rector, a senior research fellow at the Heritage Foundation, called the debate “an absolute charade” because Mr. Obama and Democratic leaders have signaled their intent to try to pass a bill legalizing illegal immigrants next year.

Once their legal status is secured, Congress would have to decide their eligibility for public benefits. Democrats have been pushing for broad inclusion, and their health care proposals give equal treatment to legal immigrants and citizens.

Republicans say the government should do more to push for a legal work force in the first place.

“If it was not bad enough that illegal immigrants take jobs that rightfully belong to citizens and legal immigrants, now they will get health care benefits that should go to Americans,” said Rep. Lamar Smith of Texas, the top Republican on the House Judiciary Committee. “If they were not in the country, we wouldn’t have to worry about emergency room or health insurance costs at all. And Americans would have these jobs.”

A Congressional Research Service report notes that the House Democrats’ bill does not expressly prohibit illegal immigrants from getting health insurance and, in fact, would mandate that they obtain insurance if they meet the “substantial presence test.”

That test calculates U.S. residency based on the number of days per year a person is in the country.

BBC – dot.life: Microsoft and Murdoch: Teaming up to bash Google?

This is dot.life – a blog about technology from BBC News.

Transcript: Health On The Hill – November 23, 2009 – Kaiser Health

Here to discuss what's ahead are Mary Agnes Carey of Kaiser Health News, Julie Rovner is joining us today with National Public Radio, and Eric Pianin, a long time Washington journalist. Welcome to you all. What are the major hurdles the …

Why a Deal With News Corp Would Make Bing the Trader Joe's of Search

A confession. Sometimes I use Bing.com. Stop looking at me that way. I said I use Bing.com. I didn't say …

2012

BBC – dot.life: Microsoft and Murdoch: Teaming up to bash Google?

This is dot.life – a blog about technology from BBC News.

Transcript: Health On The Hill – November 23, 2009 – Kaiser Health

Here to discuss what's ahead are Mary Agnes Carey of Kaiser Health News, Julie Rovner is joining us today with National Public Radio, and Eric Pianin, a long time Washington journalist. Welcome to you all. What are the major hurdles the …

Why a Deal With News Corp Would Make Bing the Trader Joe's of Search

A confession. Sometimes I use Bing.com. Stop looking at me that way. I said I use Bing.com. I didn't say …

Is Doomsday Coming? Perhaps, but Not in 2012

Published: November 16, 2009

NASA said last week that the world was not ending — at least anytime soon. Last year, CERN, the European Center for Nuclear Research, said the same thing, which I guess is good news for those of us who are habitually jittery. How often do you have a pair of such blue-ribbon scientific establishments assuring us that everything is fine?

On the other hand, it is kind of depressing if you were looking forward to taking a vacation from mortgage payments to finance one last blowout.

CERN’s pronouncements were intended to allay concerns that a black hole would be spit out of its new Large Hadron Collider and eat the Earth.

The announcements by the National Aeronautics and Space Administration, in the form of several Web site postings and a video posted on YouTube, were in response to worries that the world will end on Dec. 21, 2012, when a 5,125-year cycle known as the Long Count in the Mayan calendar supposedly comes to a close.

The doomsday buzz reached a high point with the release of the new movie “2012,” directed by Roland Emmerich, who previously inflicted misery on the Earth from aliens and glaciers in “Independence Day” and “The Day After Tomorrow.”

In the movie, an alignment between the Sun and the center of the galaxy on Dec. 21, 2012, causes the Sun to go berserk with mighty storms on its surface that pour out huge numbers of the elusive subatomic particles known as neutrinos. Somehow the neutrinos transmute into other particles and heat up the Earth’s core. The Earth’s crust loses its moorings and begins to weaken and slide around. Los Angeles falls into the ocean; Yellowstone blows up, showering the continent with black ash. Tidal waves wash over the Himalayas, where the governments of the planet have secretly built a fleet of arks in which a select 400,000 people can ride out the storm.

But this is only one version of apocalypse out there. In other variations, a planet named Nibiru crashes into us or the Earth’s magnetic field flips.

There are hundreds of books devoted to 2012, and millions of Web sites, depending on what combination of “2012” and “doomsday” you type into Google.

All of it, astronomers say, is bunk.

“Most of what’s claimed for 2012 relies on wishful thinking, wild pseudoscientific folly, ignorance of astronomy and a level of paranoia worthy of ‘Night of the Living Dead,’ ” Ed Krupp, director of the Griffith Observatory, in Los Angeles, and an expert on ancient astronomy, wrote in an article in the November issue of Sky & Telescope.

Personally, I have been in love with end-of-the-world stories since I started consuming science fiction as a disaffected child. Scaring the pants off the public has been pretty much the name of the game ever since Orson Welles broadcast “War of the Worlds,” a fake newscast about a Martian invasion of New Jersey, in 1938.

But the trend has gone too far, suggested David Morrison, an astronomer at the NASA Ames Research Center in Moffett Field, Calif., who made the YouTube video and is one of the agency’s point people on the issue of Mayan prophecies of doom.

“I get angry at the way people are being manipulated and frightened to make money,” Dr. Morrison said. “There is no ethical right to frighten children to make a buck.”

Dr. Morrison said he had been getting about 20 letters and e-mail messages a day from people as far away as India scared out of their wits. In an e-mail message, he enclosed a sample that included one from a woman wondering if she should kill herself, her daughter and her unborn baby. Another came from a person pondering whether to put her dog to sleep to avoid suffering in 2012.

All of this reminded me of the kinds of letters I received last year about the putative black hole at CERN. That too was more science fiction than science fact, but apparently there is nothing like death to bring home the abstract realms of physics and astronomy. In such situations, when the Earth or the universe is trying to shrug you and your loved ones off this mortal plane, the cosmic does become personal.

Dr. Morrison said he did not blame the movie for all this, as much as the many other purveyors of the Mayan prediction, as well as the apparent failure of some people, reflected in so many arenas of our national life, to tell reality from fiction. But then, he said, “my doctorate is in astronomy, not psychology.”

In an e-mail exchange, Dr. Krupp said: “We are always uncertain about the future, and we always consume representations of it. We are always lured by the romance of the ancient past and by the exotic scale of the cosmos. When they combine, we are mesmerized.”

A NASA spokesman, Dwayne Brown, said the agency did not comment on movies, leaving that to movie critics. But when it comes to science, Mr. Brown said, “we felt it was prudent to provide a resource.”

If you want to worry, most scientists say, you should think about global climate change, rogue asteroids or nuclear war. But if speculation about ancient prophecies gets you going, here are some things Dr. Morrison and the others think you should know.

To begin with, astronomers agree, there is nothing special about the Sun and galactic center aligning in the sky. It happens every December with no physical consequences beyond the overconsumption of eggnog. And anyway, the Sun and the galactic center will not exactly coincide even in 2012.

If there were another planet out there heading our way, everybody could see it by now. As for those fierce solar storms, the next sunspot maximum will not happen until 2013, and will be on the mild side, astronomers now say.

Geological apocalypse is a better bet. There have been big earthquakes in California before and probably will be again. These quakes could destroy Los Angeles, as shown in the movie, and Yellowstone could erupt again with cataclysmic force sooner or later. We and our works are indeed fragile and temporary riders on the Earth. But in this case, “sooner or later” means hundreds of millions of years, and there would be plenty of warning.

The Mayans, who were good-enough astronomers and timekeepers to predict Venus’s position 500 years in the future, deserve better than this.

Mayan time was cyclic, and experts like Dr. Krupp and Anthony Aveni, an astronomer and anthropologist at Colgate University, say there is no evidence that the Mayans thought anything special would happen when the odometer rolled over on this Long Count in 2012. There are references in Mayan inscriptions to dates both before the beginning and the ending of the present Long Count, they say, just as your next birthday and April 15 loom beyond New Year’s Eve, on next year’s calendar.

So keep up those mortgage payments.

No matter how much time you spend at the website there are always things that you are going to miss out on. I was completely oblivious to the Meteor Crash Site on Kreludor when it occurred but once I found out about it I bookmarked the page and hit it several times a day. So far I haven't been able to determine if there is a specific time that is best. With some events like Coltzan's Shrine you can visit at certain times to try and improve your chances of getting an item or level increase.

When you arrive at the crash site you will be presented with one of a handful of images of the meteor; so far I have only had one option and that is to poke the meteor with a stick. You could choose to run away from it but that isn't much fun. Most of the time this is the result: “Meteors are funny like that. They just don't feel like company sometimes. Try again later” If you are lucky enough to get something from it you will see a message that reads: “The meteor has cracked open and a small object falls out.”

Food items include the following: “Spiced Apple Pie”, “Green Tea”, “Space Tots”, “Dirt Pie”, “Slime Sundae”, “Meteor Bites”, “Intergalactic Spiced Beans”, “Sugarbunny Surprise”, “Cherries Jubalee”, “Festering Coffee”, “Iceberg Sundae” and “Chicken Cordon Bleu”. I went a little crazy and started buying tons of the food items to stock up on so I can make a killing if they ever decide to change the items that the meteor gives out.

There are a few creatures that you can get from the meteor, so far I have only gotten a “Nedler” but the “Tencals”, “Rashpid” and “Mibblie” are also Petpets that you can get. You can find these for under 1,000 NP on the Shop Wizard if you want to get one for your Neopet. The “Rashpid” sells for a little more so I am assuming that this is one of the rarer items that the meteor gives out.

Common items that fall out of the meteor include “Balloons”, “Unstable Slime”, “Meteor Rock”, “Slime Covered Window”, “Attack On Kreludor”, “MechaBerry Bomb” and “Glowing Rock”. So far the only book that has been given out is the “Attack On Kreludor”; you can find these for under 200 NP on the Shop Wizard.

This was first released at the website in mid June of 2007 and there have been speculations that on the year anniversary there will be more options added to it. You can visit the crash site once a day and try your luck at getting something. Almost all of the items that have been given away at the crash have dropped significantly in price on the Shop Wizard so if you are a hoarder and like to stock up on things, check the list above and start shopping!

Where To Find The Crash:
www.neopets.com/moon/meteor.phtml

by Erick Schonfeld on November 23, 2009

When it comes to the mobile Web, increasingly there are only two mobile platforms which matter: Apple and Android. According to AdMob’s October, 2009 mobile metrics report, the iPhone/iPod Touch and Android phones accounted for 75 percent of mobile Web traffic in the U.S., as measured by all the mobile ad requests it tracks. That number is up from a combined 65 percent in September, 2009.

The iPhone is miles ahead of everyone else, but Android is quickly rising as a strong second. While Android phones managed to increase their share from 17 percent in September, 2009 to 20 percent in October, 2009, the iPhone and iPod Touch gained even more, going from 48 percent to 55 percent share. Meanwhile, during that same month the Blackberry ’s mobile Web traffic share went down from 14 percent to 12 percent, and Palm’s webOS shrank from 10 percent to 5 percent (Ouch).

On a global basis, the iPhone OS now accounts for 50 percent of all mobile traffic, up from 43 percent the month before. Android has an 11 percent global share, which makes it third globally after Nokia/Symbian’s 25 percent share. The U.S. makes up 49 percent of all the mobile Web traffic, according to AdMob’s stats. Thus strength in the U.S. translates to strength in the worldwide numbers.

As major new carriers come onboard, the numbers can shift dramatically. Since Verizon launched the Droid two weeks ago, that single device now makes up 24 percent of all Android mobile Web traffic. The HTC Dream, which is the oldest Android device, is the only one with more, at 36 percent of Android traffic. I wouldn’t be surprised if the Droid passes that within the next two weeks.

AdMob was recently acquired by Google for $750 million. Hopefully, it will continue to share this mobile market share data in the future.

Rupert Murdoch is pointing a gun to Google’s head, and Microsoft is helping him pull back the trigger. For the past few weeks, Murdoch and his officers at News Corp. have been very vocal about their distaste for Google and their desire to lead other media companies in a boycott of sorts.

Murdoch keeps threatening to stop letting Google index the WSJ.com and his other media sites, and wants other news sites to join him in this self-imposed silence. The folks at Microsoft’s Bing think this is a great idea. Not only that, but the FT reports that Microsoft is in fact in discussions with News Corp. and other publishers about the possibility of paying them to remove their sites from Google’s search index. This report comes on the heels of a meeting in Europe where Bing dangled the prospect of premium spots in search results to publishers and outright money for search R&D.

Microsoft is not afraid to buy search market share, which is what it’s doing with the Yahoo search deal and even its Cashback program. But with these latest talks, it is literally trying to buy the news, or at least exclusive access to the news.

Bing can’t buy all the news, it can only buy certain brands. If Bing can somehow become the only place you can find news results and working links to the Wall Street Journal and other top papers such as the New York Times, the Washington Post, and the LA Times, for instance, that would be a big reason to switch for a lot of folks. But it’s not clear how much Bing would have to pay the news companies of the world for them to give up all the traffic Google sends them in return for a fraction of that traffic and some cash.

Even Google couldn’t afford to strike such deals. Says Murdoch, of Google, “If they were to pay everybody for everything they took from every newspaper in the world, and every magazine, they wouldn’t have any profits left.”

In order to actually make a dent in Google’s market share, Bing would have to pay such exorbitant sums to so many different news companies that it would be difficult to recoup its investment. Bing certainly get some marketing buzz out of any such move, but that’s about it.

The big problem with a search engine trying to buy market share by buying parts of the news is that information spreads so quickly these days, exclusives last about 30 seconds. That information will end up on a site that is indexed by Google. Or the same news will be broken by someone else on the Web before the WSJ.com even gets to it.

Exclusive indexing goes against the Web’s inherent openness. Companies that try to curtail that openness don’t last long on the Web.

Monday, November 09, 2009

Two Profiles in Class [Rory Cooper]

This past weekend, Americans were treated to two completely different profiles in class. First there was former president George W. Bush. On Friday night, George and Laura Bush traveled by car to Fort Hood to meet with the devastated families of last week’s tragedy. They specifically asked the base commander not to alert the press, and spent hours simply doing what they could to comfort the grief-stricken families.

The story was eventually uncovered, as these moments tend to be, but clearly President Bush did not see this as a personal opportunity, nor did he want to upstage the current president. The former president saw his interactions with wounded soldiers and their families as private moments.

Twenty-four hours later, President Obama was not at Fort Hood, but rather on Capitol Hill lobbying a private meeting of Democrats, who must not have known his position on health care. Obama told the lawmakers, according to Democratic congressman Earl Blumenauer in the New York Times: “Does anybody think that the teabag, anti-government people are going to support them if they bring down health care? All it will do is confuse and dispirit [Democratic voters] and it will encourage the extremists.”

Let’s dissect that statement. First, President Obama incorrectly states that conservatives are “anti-government,” which simply is untrue. Conservatives are in favor of the government’s performing its duties efficiently and effectively. Conservatives are not in favor of the government’s running a new national health-care entitlement that will surely fail. (The House passed a bill that costs $2.4 trillion, raises taxes by $700 billion, and massively expands a bankrupt Medicaid program — all while the nation’s unemployment rate stands above 10 percent.)

More disturbing is President Obama’s labeling his opposition as “extremists” and falling just short of using the profane “teabag” epithet that is popular among dismissive liberals. This is simply beneath the office he holds. When tens of thousands of multigenerational families descended onto Capitol Hill last week, they were protesting runaway federal spending and government control. They understood that while reform of our health-care system is necessary, the answer is not to compound the problem while ignoring uninsured Americans. These are not extreme views.

President Obama won a short-lived victory this weekend on health care, but he clearly misread the tea leaves if he believes that conservative Democrats will get more support in their home districts for supporting this disastrous plan. These electoral matters are not helped by the president’s demonization of a respectful and vigilant opposition to this government intrusion into their lives.

While President Bush was at Fort Hood consoling the victims of real radical extremism, President Obama was in Washington calling American families who don’t support his health-care plan “extremists.” A more enlightening profile of the two men could not be found.

05. November 2009 · Comments Off · Categories: Space · Tags: , , ,

Google CEO Eric Schmidt envisions the <b>news</b> consumer of the future <b>…</b>

For all the bluster about Google as an enemy of the <b>news</b> industry, you might be surprised to learn that Eric Schmidt, the company's CEO, is kind of a.

<b>New</b> York Mayor: Not Bad <b>News</b> at All for Obama – The Gaggle Blog <b>…</b>

BrightCove:type='mini';titleid=48129677001;featuredName=null;playerName=null;rsslid=1753282621;rsspid=17823922001;configpid=1378342539;lineupCollapse='true';lineupName=null;stylesheet=null;numItems=5;startMinimized='false';width=500 …

Custom Sections Directory for Google <b>News</b>

Google <b>News</b> added a directory for custom sections and an easy way to create your own custom sections. Until now, the only way to add a section to Google <b>News</b> was to perform a search and click on "create custom section" at the bottom of …

A Black Hole Engine That Could Power Spaceships


Artificially generated black holes could provide us with the power to make inter-solar travel a possibility. New research shows how strapping a black hole to your starship might just give you the juice to get to Alpha Centauri.

Louis Crane and Shawn Westmoreland of Kansas State University propose a way to use black holes as fuel that is entirely within the bounds of physics and technology as we know them, but would take phenomenal amount of engineering.

The crux of their idea involves using using a laser to form a micro black hole, which could be used as an energy source. This would be a Schwarzschild, or non-rotating, black hole which outputs Hawking Radiation, and the smaller the black hole, the more energetic.

Of course, making a black hole isn't the world's most easy undertaking. It takes a huge amount of power to build one in the first place. To make one of these mini black holes, Crane and Westmoreland propose a 370km2 solar panel, at an orbit one million km from the surface of the sun, which, if perfectly efficient, would gather enough energy per year to make one black hole. This power would be fed to a spherically converging gamma laser, with a lasing mass of around 10^9 tonnes. However, after you make a few black holes, you can use them as a power source to make more.

According to the authors, a black hole to be used in space travel needs to meet five criteria:

1. has a long enough lifespan to be useful,
2. is powerful enough to accelerate itself up to a reasonable fraction of the speed of light in a reasonable amount of time,
3. is small enough that we can access the energy to make it,
4. is large enough that we can focus the energy to make it,
5. has mass comparable to a starship.

Fortunately, black holes have a sweet spot in terms of size, power and lifespan which is almost ideal. If you take a trip to Alpha Centauri, with an acceleration of 1g to the half way point, and then decelerate at 1g for the remainder of the journey, the trip takes a relativistic 3.5 years. A black hole that would survive the entire trip would have a radius of 0.9 attometers, would have a mass of 606,000 tonnes, and a power output of 160 petawatts. The lifespan of the black hole could be extended by feeding it mass, too.

For longer trips, you could use larger but weaker holes, and smaller and more powerful ones for short trips.

Getting the black hole to act as a power source also requires a bit of work. One potential method involves placing the hole at the focal point of a parabolic reflector attached to the ship, creating forward thrust. A slightly easier, but less efficient method would involve simply absorbing all the gamma radiation heading towards the fore of the ship, and let the rest shoot out the back to push you onwards.

Of course, there are potential problems with Crane and Westmoreland's ideas. According to Govind Menon, Professor of Physics at Troy University, most views on extracting energy from black holes involve using ones that rotate. “With non-rotating black holes, this is a very difficult thing…we typically look for energy almost exclusively from rotating black holes. Schwarzschild black holes do not radiate in an astrophysical, gamma ray burst point of view. It is not clear if Hawking radiation alone can power starships.” Menon adds that extracting energy from black holes is highly problematic. “Given [this type] of black hole, it is not clear to me how someone would go about extracting energy.”

Another issue is what to do with the black hole when it reaches the end of its life span, as they tend to explode. “Such an explosion is powerful by terrestrial standards, but not by astronomical standards”, say Crane and Westmoreland, so it's merely a matter of dropping the black hole around 1 AU away from anything too important, and letting it detonate.

With a set of four machines: black hole generator, black hole drive, power plant, and a self perpetuating black hole powered black hole generator, the potential is enormous. As Crane and Westmoreland say:

A civilization equipped with our four machine tool set would be almost unimaginably energy rich. It could settle the galaxy at will.

[googletranslate("A Black Hole Engine That Could Power Spaceships


Artificially generated black holes could provide us with the power to make inter-solar travel a possibility. New research shows how strapping a black hole to your starship might just give you the juice to get to Alpha Centauri.

Louis Crane and Shawn Westmoreland of Kansas State University propose a way to use black holes as fuel that is entirely within the bounds of physics and technology as we know them, but would take phenomenal amount of engineering.

The crux of their idea involves using using a laser to form a micro black hole, which could be used as an energy source. This would be a Schwarzschild, or non-rotating, black hole which outputs Hawking Radiation, and the smaller the black hole, the more energetic.

Of course, making a black hole isn't the world's most easy undertaking. It takes a huge amount of power to build one in the first place. To make one of these mini black holes, Crane and Westmoreland propose a 370km2 solar panel, at an orbit one million km from the surface of the sun, which, if perfectly efficient, would gather enough energy per year to make one black hole. This power would be fed to a spherically converging gamma laser, with a lasing mass of around 10^9 tonnes. However, after you make a few black holes, you can use them as a power source to make more.

According to the authors, a black hole to be used in space travel needs to meet five criteria:

1. has a long enough lifespan to be useful,
2. is powerful enough to accelerate itself up to a reasonable fraction of the speed of light in a reasonable amount of time,
3. is small enough that we can access the energy to make it,
4. is large enough that we can focus the energy to make it,
5. has mass comparable to a starship.

Fortunately, black holes have a sweet spot in terms of size, power and lifespan which is almost ideal. If you take a trip to Alpha Centauri, with an acceleration of 1g to the half way point, and then decelerate at 1g for the remainder of the journey, the trip takes a relativistic 3.5 years. A black hole that would survive the entire trip would have a radius of 0.9 attometers, would have a mass of 606,000 tonnes, and a power output of 160 petawatts. The lifespan of the black hole could be extended by feeding it mass, too.

For longer trips, you could use larger but weaker holes, and smaller and more powerful ones for short trips.

Getting the black hole to act as a power source also requires a bit of work. One potential method involves placing the hole at the focal point of a parabolic reflector attached to the ship, creating forward thrust. A slightly easier, but less efficient method would involve simply absorbing all the gamma radiation heading towards the fore of the ship, and let the rest shoot out the back to push you onwards.

Of course, there are potential problems with Crane and Westmoreland's ideas. According to Govind Menon, Professor of Physics at Troy University, most views on extracting energy from black holes involve using ones that rotate. "With non-rotating black holes, this is a very difficult thing...we typically look for energy almost exclusively from rotating black holes. Schwarzschild black holes do not radiate in an astrophysical, gamma ray burst point of view. It is not clear if Hawking radiation alone can power starships." Menon adds that extracting energy from black holes is highly problematic. "Given [this type] of black hole, it is not clear to me how someone would go about extracting energy.”

Another issue is what to do with the black hole when it reaches the end of its life span, as they tend to explode. “Such an explosion is powerful by terrestrial standards, but not by astronomical standards”, say Crane and Westmoreland, so it's merely a matter of dropping the black hole around 1 AU away from anything too important, and letting it detonate.

With a set of four machines: black hole generator, black hole drive, power plant, and a self perpetuating black hole powered black hole generator, the potential is enormous. As Crane and Westmoreland say:

A civilization equipped with our four machine tool set would be almost unimaginably energy rich. It could settle the galaxy at will.”,'en','fr')]

 

 

05. November 2009 · Comments Off · Categories: Video · Tags: , , , ,

http://www.youtube.com/watch?v=3Bzi9VRxqX4