I always thought that a black hole meant a minimum density, otherwise it couldn't warp space-time enough to create a strong enough gravitational pull for light not to escape.
Given a fixed radius, yes there is a minimum density. Allow different radii and the game changes.
Formula for calculating volume is:
4/3 * pi * r^3
Formula for calculating the radius of a black hole is:
2 * M * G / c^2
As you see, radius grows linear with mass but volume (and therefore density) does not.
Perhaps half a dozen times in my life I have encountered a self declared "physics enthusiast" and have never gotten the right answer out of my trick question:
"If the earth was hollow and you jumped inside, would gravity pull you towards the outer shell or would gravity pull you towards the center?"
The trick is of course that neither answer is correct. Gravity would be neutral all the way through. You would be completely weightless inside a hollow earth.
I expect some simple math based on the estimated mass and size of the universe would suggest that is not the case unless we have greatly confused some of the variables.
Estimates of the mass of the observable universe range from 3.0E+50 kilo's to 1.6E+60 kilo's. Citations.
A black hole with the wikipedia mass has an event horizon radius of approximately 1.9E+26 meters. Compare with the radius of the observable universe, which is umm.. approximately 1.3E+26 meters. In other worse, if the wikipedia mass is correct, then we are inside a black hole assuming that the Schwarzschild equation for calculating event horizons is correct. I think the existance of dark energy has changed the game tho, such that we certainly cont be confident of the Schwarzschild radius calculation at such large scales.
We always hear about singularities necessitating event horizons, but the converse is most certainly not true. An event horizon may exist without a singularity inside of it.
It depends on scale more than anything. Small black holes almost certainly require a singularity, but a black hole the mass of a galactic cluster actually has a very low average density. So while at the event horizon space-time is very much distorted, on the inside it may not be distorted enough to overcome common everyday forces (the trick of treating a collection of mass as a point source of force doesnt work from inside that collection of mass)
I suppose that any time I hit a client in the face with company equipment, I can just say "my employer isnt responsible" while doing it, and poof, my employer doesnt have any responsibility?
Google was browser sniffing again and didnt offer this "feature" to Opera users (who could get it to work simply by identifying as any of the supported browsers,) Opera users rejoiced.
. If an icon changes or a button gets moved, they don't try to intuit where it might have gone or look in menus that sound like they're related to the function they're looking for. Instead they react as if their world has been turned upside down, and they just give up and call for help.
Only because it means that they can sit around doing nothing for awhile.
Microsoft didn't bail Apple out of anything. I forget the exact reason why, but Microsoft bought $150 million worth of Apple stock at a time when Apple had billions of dollars in cash sitting in the bank.
You forget the exact reason why because you blocked out the stuff you couldn't cope with. Apple was losing the better part of a billion dollars a year by this point, and was in the midst of a restructuring to save itself.. but the restructuring wasnt enough. They needed cash. Cash Cash Cash.
I understand you have to be security and performance minded and that there are some issues with codecs and containers but aside from that is rendering HTML5 standards really that complicated?
Before they are agreed upon, yes.. its really hard to render them.
A hardware company generally does not compete with a software company.
Apple has a long standing friendly relationship with Microsoft. They even turned to Microsoft to bail them out of a big financial mess not so many years ago.
yes, this is contrary to Apples television advertisements... but those arent reality.
The extensions only come into play when you're using them, and possibly on opening the browser. It doesn't affect the speed of rendering.
They most certainly effect the speed of parsing and/or rendering. They have to. They wouldnt be able to do anything if they didn't.
Did you think this stuff is magic that just happens? Sorry to tell you this, assumer, but for something to happen, there has to be a check to see if something should happen. That check isnt free. In fact, with a plug in architecture, that check is done in just about the worst imaginable way.
Oh wait, its E85 again.. in 5 months it will be E70 again.. then some months later it will be E85 again... then E70.. then E85... then E70... again...
yeah.. this stuff is great... if only we didn't burn COAL to turn corn into ethanol, making it worse than gasoline... oh.. wait... FUCK.. I told the world how stupid ethanol is... I didn't mean to..
My motherboard history for self-built machines goes like this:
ASUS -> SOYO -> GIGABYTE -> ASUS
I have never been disappointed, because in each case I researched the issue and have gone with a board thats been around for more than a few months. I don't accept what paid reviewers say.. I go to forums (such as overclockers) and find out what people are using without issue, then assemble a like-system myself.
I'm not quite sure why you think replacing one set of arcane menu options with another set of arcane menu options is such a disimprovement
Maybe because they arent arcane.
The fear, or least my fear, is that it WILL be reduced to the lowest common denominator. Can't have an easy-to-use GUI for changing voltage levels, built right into the system.. so get rid of the voltage settings.
Slashdot Mirror
I always thought that a black hole meant a minimum density, otherwise it couldn't warp space-time enough to create a strong enough gravitational pull for light not to escape.
Given a fixed radius, yes there is a minimum density. Allow different radii and the game changes.
Formula for calculating volume is:
4/3 * pi * r^3
Formula for calculating the radius of a black hole is:
2 * M * G / c^2
As you see, radius grows linear with mass but volume (and therefore density) does not.
Indeed.
Perhaps half a dozen times in my life I have encountered a self declared "physics enthusiast" and have never gotten the right answer out of my trick question:
"If the earth was hollow and you jumped inside, would gravity pull you towards the outer shell or would gravity pull you towards the center?"
The trick is of course that neither answer is correct. Gravity would be neutral all the way through. You would be completely weightless inside a hollow earth.
I expect some simple math based on the estimated mass and size of the universe would suggest that is not the case unless we have greatly confused some of the variables.
Estimates of the mass of the observable universe range from 3.0E+50 kilo's to 1.6E+60 kilo's. Citations.
Wikipedia has it as 8.0E+52 kilos.
A black hole with the wikipedia mass has an event horizon radius of approximately 1.9E+26 meters. Compare with the radius of the observable universe, which is umm.. approximately 1.3E+26 meters. In other worse, if the wikipedia mass is correct, then we are inside a black hole assuming that the Schwarzschild equation for calculating event horizons is correct. I think the existance of dark energy has changed the game tho, such that we certainly cont be confident of the Schwarzschild radius calculation at such large scales.
We always hear about singularities necessitating event horizons, but the converse is most certainly not true. An event horizon may exist without a singularity inside of it.
It depends on scale more than anything. Small black holes almost certainly require a singularity, but a black hole the mass of a galactic cluster actually has a very low average density. So while at the event horizon space-time is very much distorted, on the inside it may not be distorted enough to overcome common everyday forces (the trick of treating a collection of mass as a point source of force doesnt work from inside that collection of mass)
I suppose that any time I hit a client in the face with company equipment, I can just say "my employer isnt responsible" while doing it, and poof, my employer doesnt have any responsibility?
We arent talking about implementing the fix. We are talking about testing it.
Are you really that stupid? Why don't YOU support a project that runs on millions of setups? Not doing that? Yeah.. thats right... you aren't.
You can't double up on testing man hours to double the speed of testing. Period. Don't be a moron.
Microsoft is the largest software company in the world.
[pandant]
When Did Microsoft become another name for IBM?
[/pedant]
"..at most.." ??
Did you want it to sound like 'never' was still in the running? Fucking spinner.
You just nullified everything else you had to say.
Microsoft is a gigantic company with gigantic resources.
There is a book you need to read. After you read it, maybe you wont be such a naive resource idiot.
Google was browser sniffing again and didnt offer this "feature" to Opera users (who could get it to work simply by identifying as any of the supported browsers,) Opera users rejoiced.
If you are throwing webkit in there for a rendering engine... wouldnt you also use its javascript engine?
. If an icon changes or a button gets moved, they don't try to intuit where it might have gone or look in menus that sound like they're related to the function they're looking for. Instead they react as if their world has been turned upside down, and they just give up and call for help.
Only because it means that they can sit around doing nothing for awhile.
Microsoft didn't bail Apple out of anything. I forget the exact reason why, but Microsoft bought $150 million worth of Apple stock at a time when Apple had billions of dollars in cash sitting in the bank.
You forget the exact reason why because you blocked out the stuff you couldn't cope with. Apple was losing the better part of a billion dollars a year by this point, and was in the midst of a restructuring to save itself.. but the restructuring wasnt enough. They needed cash. Cash Cash Cash.
Here is a nice video demonstrating the 'Who run barter town?' relationship.
"We believe that Internet Explorer is a really good browser" - Steve Jobs, 1997.
You can always fork FireFox...
Might I suggest going back to the 2.x days tho
Google installs to %AppData% because it wants to silently update the binary.
If it was in %ProgramFiles% then the typical UAC-enabled user would be alerted to updates, and could deny them.
Evil, or Not Evil? hmmm.
I understand you have to be security and performance minded and that there are some issues with codecs and containers but aside from that is rendering HTML5 standards really that complicated?
Before they are agreed upon, yes.. its really hard to render them.
A hardware company generally does not compete with a software company.
Apple has a long standing friendly relationship with Microsoft. They even turned to Microsoft to bail them out of a big financial mess not so many years ago.
yes, this is contrary to Apples television advertisements... but those arent reality.
But that check is there regardless of whether the plug-in is used or not.
Sigh.. someone who thinks checking within an empty list is as efficient as checking within a list with many things in it.
..and video games that would make great movies, such as Mirrors Edge.
The extensions only come into play when you're using them, and possibly on opening the browser. It doesn't affect the speed of rendering.
They most certainly effect the speed of parsing and/or rendering. They have to. They wouldnt be able to do anything if they didn't.
Did you think this stuff is magic that just happens? Sorry to tell you this, assumer, but for something to happen, there has to be a check to see if something should happen. That check isnt free. In fact, with a plug in architecture, that check is done in just about the worst imaginable way.
E85? Don't you mean E70?
Oh wait, its E85 again.. in 5 months it will be E70 again.. then some months later it will be E85 again... then E70.. then E85... then E70... again...
yeah.. this stuff is great... if only we didn't burn COAL to turn corn into ethanol, making it worse than gasoline... oh.. wait... FUCK.. I told the world how stupid ethanol is... I didn't mean to..
Maybe the 64-bit version was faster because you didnt have as many extensions.
My motherboard history for self-built machines goes like this:
ASUS -> SOYO -> GIGABYTE -> ASUS
I have never been disappointed, because in each case I researched the issue and have gone with a board thats been around for more than a few months. I don't accept what paid reviewers say.. I go to forums (such as overclockers) and find out what people are using without issue, then assemble a like-system myself.
I'm not quite sure why you think replacing one set of arcane menu options with another set of arcane menu options is such a disimprovement
Maybe because they arent arcane.
The fear, or least my fear, is that it WILL be reduced to the lowest common denominator. Can't have an easy-to-use GUI for changing voltage levels, built right into the system.. so get rid of the voltage settings.
One is to:
www.BP.com/OilSpillNews "Info about the Gulf of Mexico Spill Learn More about How BP is Helping."
The other is:
Tar Ball Burner(tm) "Collect free tar balls from beaches and turn them into unleaded gas!"
Please slashdot both of them.