actually, the light is still going in a straight line, but the spacetime it travels in is bent.
and black holes are equally good at bending light as any other object with same mass.
if it's necessary to capture 6 lightning strikes per year for your household alone, (and at 100% efficiency), then no, i don't think it's a useful power source.
The US in total (industry, street lighting, cars, heating,..) consumes about 3.35 terawatt in energy, which is equivalent to about 70 000 000 000 lightning strikes captures per year at 100% efficiency, or about 230 per person...
"However, even just the electrical current of lightning is considerable -- 20,000 amps on average, the same as 100 steel welders. But the power is on for only a brief fraction of a second, so the total power is actually small, only enough to power a 100-watt light bulb for six months." http://www.nasa.gov/centers/kennedy/about/information/science_faq.html#1
i guess he was thinking about conservation of energy and momentum?
shooting something with momentum (yes, light has momentum) should make it go in a straight line, not a curved one, unless other forces are also involved, like in refraction by the atmosphere for example.
In space, no atmosphere, so maybe no curved lasers?
because the money is transferred from your account tot the bank's account, stays there fora couple of days, and only then transferred to the other bank, where it stays a couple of days, before it is transferred to the target account.
the amount of days depends on the bank. (it's written in the small letters on the contract somewhere)
this means that for every transfer, the money is owned by the banks a couple of days, and they can invest it, loan it to people,...
So a couple of percent of the time, your money is their property. a couple % of a gazillion euro's = a lot of money
Well, since it tests the blood of the patient, and doesn't need to scan patient per patient, that probably means that you can put a lot of blood samples together in one big pot, and then test that mixture (and do this a couple of times, to reduce the error margin, but that can be done at the same time.)
If your batch is cancer free, you have just tested X people in one hour. If not, then you split the batch in two, and test both batches to know which of them contains the cancerous blood. Continue a couple of times until you found the patient.
Testing 256 people at the same time takes 1 test if everyone is healty, or 8 tests if one has cancer. (or a bit more if more than one person has cancer)
So that means that the average time per person can be very low. As opposed to PET scans, MRI, CT, SPECT,.. where you can only cram one (or two if you squeeze) person in the machine at the same time. If a PET scan takes 15 minutes, then you can only scan 4 people per hour with one machine.
Where can I buy this 3.1 thing you speak so proudly about? If it is really that fast, I must have it for my EEE. Imagine, being able to boot up, and browse all the internets in only one second! My productivity will googlify!
I don't really understand why people recomment Halliday Resnick Walker.
Okay, nice book, but in my view, it's a lot of bling bling and pictures, but not very good for serious physics studies.
When I look at it, i really have this feeling of "damn this must be an American book, so much presentation, so little real content".
"collide neutron stars"??? WTF ?!
Those things are heavy you know!
You need at least a very very very large pickup truck to move them, probably more. Supercomputer may be super, but they are not good at moving stars.
Slashdot Mirror
?? why would sandblasting an intern help in wiping the disk?
an egg is not a planet
Is this the dude you're talking about? http://en.wikipedia.org/wiki/Immanuel_Velikovsky rotations of planets don't just 'stop momentarily'. once stopped, it stays stopped. "angular momentum" http://en.wikipedia.org/wiki/Angular_momentum
actually, the light is still going in a straight line, but the spacetime it travels in is bent. and black holes are equally good at bending light as any other object with same mass.
if it's necessary to capture 6 lightning strikes per year for your household alone, (and at 100% efficiency), then no, i don't think it's a useful power source. The US in total (industry, street lighting, cars, heating,..) consumes about 3.35 terawatt in energy, which is equivalent to about 70 000 000 000 lightning strikes captures per year at 100% efficiency, or about 230 per person...
actually, no:
"However, even just the electrical current of lightning is considerable -- 20,000 amps on average, the same as 100 steel welders. But the power is on for only a brief fraction of a second, so the total power is actually small, only enough to power a 100-watt light bulb for six months."
http://www.nasa.gov/centers/kennedy/about/information/science_faq.html#1
i guess he was thinking about conservation of energy and momentum? shooting something with momentum (yes, light has momentum) should make it go in a straight line, not a curved one, unless other forces are also involved, like in refraction by the atmosphere for example. In space, no atmosphere, so maybe no curved lasers?
It's already slashdotted, and i'm apparently the first poster...
so, if you don't actually do anything productive, but just forward other people's information all the time, you are "a valuable worker"?
is it 3 percent?
yeah, but on the other hand: correlation is correlated to causation
maybe in paintball mode people don't 'die', and can continue playing, while in real FPS, when you die it's game over?
because the money is transferred from your account tot the bank's account, stays there fora couple of days, and only then transferred to the other bank, where it stays a couple of days, before it is transferred to the target account. the amount of days depends on the bank. (it's written in the small letters on the contract somewhere) this means that for every transfer, the money is owned by the banks a couple of days, and they can invest it, loan it to people,... So a couple of percent of the time, your money is their property. a couple % of a gazillion euro's = a lot of money
Well, since it tests the blood of the patient, and doesn't need to scan patient per patient, that probably means that you can put a lot of blood samples together in one big pot, and then test that mixture (and do this a couple of times, to reduce the error margin, but that can be done at the same time.) If your batch is cancer free, you have just tested X people in one hour. If not, then you split the batch in two, and test both batches to know which of them contains the cancerous blood. Continue a couple of times until you found the patient. Testing 256 people at the same time takes 1 test if everyone is healty, or 8 tests if one has cancer. (or a bit more if more than one person has cancer) So that means that the average time per person can be very low. As opposed to PET scans, MRI, CT, SPECT,.. where you can only cram one (or two if you squeeze) person in the machine at the same time. If a PET scan takes 15 minutes, then you can only scan 4 people per hour with one machine.
can anybody post first please?
Where can I buy this 3.1 thing you speak so proudly about? If it is really that fast, I must have it for my EEE. Imagine, being able to boot up, and browse all the internets in only one second! My productivity will googlify!
then don't build it from scratch...duh
apparently there's a correlation between speaking English and being authoritarian. misschien moet ik dan maar stoppen met Engels spreken...
what about the "Find Waldo CAPTCHA"? You have to find Waldo before you can enter the site.
you shrank it down 1 bit? to install a Linux "1" on the side? Damn, that's the smallest linux distro I've ever heard of!
Easy... Your IP is 127.0.0.1
I don't really understand why people recomment Halliday Resnick Walker. Okay, nice book, but in my view, it's a lot of bling bling and pictures, but not very good for serious physics studies. When I look at it, i really have this feeling of "damn this must be an American book, so much presentation, so little real content".
The Dutchies are considering to build this thing: http://www.nancarrow-webdesk.com/warehouse/storage2/2007-w49/img.87491.html
so you need a bag without straps, zippers, without mouse, wires, pens.... i think they want you to use a brown paper bag.
"collide neutron stars"??? WTF ?! Those things are heavy you know! You need at least a very very very large pickup truck to move them, probably more. Supercomputer may be super, but they are not good at moving stars.