The diurnal mean of the energy emitted is equal to the energy received (otherwise the oceans would quickly boil away).
The difference is that the energy emitted has a much higher entropy than the energy received: solar energy comes from a source with a temperature around 6000 K, i.e. low entropy, Earth emits the same amount of energy at a temperature of around 300 K, i.e. high entropy.
Hence, it is much harder to get any useful work from the emitted than from the received energy.
Name a program you could make in C or perl that you know well
Actually I think you should take this a step further, not just taking a program you could write, but one you have written already. This turns the exercise from a programming-from-scratch to a porting one: All logical problems were solved when you wrote the original version. Now you can concentrate on the details of the new language/framework/whatever.
bagboy writes to tell us that as sources of renewable energy are being sought, BP has announced a new method of extracting natural gas from ice underneath Alaska's North Slope drilling fields.
And could someone please explain whatever this has to do with renewable energy?
It's really just another source of non-renewable energy
Just to stay OFF topic for a while, now the subject comes up:
Would the term "USAnians" be so terribly hard to pronounce?
USians, in addition to being unpronounceable, suffers from the lack of accounting for other cases of "united states" around the world and history. So it has always puzzled me why USAnians seem to prefer to cut off one third of the name (or rather: abbreviation) of the union: US(A). Actually, the only place I regularly see it spelled out in its entirety is in the name of the crappy newspaper "USA Today".
And don't even get me started on the subject of USAnians monopolizing the term "Americans" to mean "the Americans living i a minor part of the Americas, situated between Canada and Mexico".
USAnians are what you are - USians? baah! Americans - yes, but so are the Canadians, Brazileans, Nicaraguans, Chileans, and many more. Americans is a more general term (as "Europeans", "Africans", etc.)
Re:One Percent
on
Lunar Power
·
· Score: 2, Informative
except for the minor detail that 6378.1 km is the radius of the earth, not the moon
Slashdot Mirror
The diurnal mean of the energy emitted is equal to the energy received (otherwise the oceans would quickly boil away).
The difference is that the energy emitted has a much higher entropy than the energy received: solar energy comes from a source with a temperature around 6000 K, i.e. low entropy, Earth emits the same amount of energy at a temperature of around 300 K, i.e. high entropy.
Hence, it is much harder to get any useful work from the emitted than from the received energy.
Actually I think you should take this a step further, not just taking a program you could write, but one you have written already. This turns the exercise from a programming-from-scratch to a porting one: All logical problems were solved when you wrote the original version. Now you can concentrate on the details of the new language/framework/whatever.
imagine a beowolf cluster of these... ... ooops - wrong decade - sorry!
battery with screwdriver in hand.
... how did the battery manage to get a screwdriver in its hand?
And could someone please explain whatever this has to do with renewable energy? It's really just another source of non-renewable energy
A cookie would have been the right thing to send!
Just to stay OFF topic for a while, now the
subject comes up:
Would the term "USAnians" be so terribly hard
to pronounce?
USians, in addition to being unpronounceable,
suffers from the lack of accounting for other
cases of "united states" around the world and
history. So it has always puzzled me why USAnians
seem to prefer to cut off one third of the name
(or rather: abbreviation) of the union: US(A).
Actually, the only place I regularly see it
spelled out in its entirety is in the name of
the crappy newspaper "USA Today".
And don't even get me started on the subject
of USAnians monopolizing the term "Americans" to
mean "the Americans living i a minor part of the
Americas, situated between Canada and Mexico".
USAnians are what you are - USians? baah!
Americans - yes, but so are the Canadians,
Brazileans, Nicaraguans, Chileans, and
many more. Americans is a more general term
(as "Europeans", "Africans", etc.)
except for the minor detail that 6378.1 km is the radius of the earth, not the moon
See URL http://www.supercables.com (follow the "news" link)