> The overall effect of "relativistic time slowing" is tiny and is in the nano-second ballpark, however when calculating positions using GPS a few nano-seconds can mean a few meters...
No, it's in the micro-second ballpark (around 38 microseconds a day) which leads to 11/kilometers/ of inaccuracy a day, if you do not count in relativity.
That's just typical. Slackware, being my primary (and most often only) OS since I began using Linux, didn't fully support my new 64 bit machine. So I switch to Gentoo (those extra cores had to have a reason..), and when I finally get settled with Gentoo, Slackware goes 64 bit.
I blinked a few times over the extra update, until I read that it wast just Steven J. Vaughan-Nichols' speculations. Apparantly, the claim that Google got DDOS'ed is not confirmed.
Parent is overrated. Surface area gives drag forces allright, but higher density gives higher inertial mass per surface area, at least for objects like lost toolbags. Mathematicians could probably dream up some sort of toolbag where this is not true, however...
No, the ISS has merely been stabilizing its first orbit. In LEO's you experience some atmospheric drag. Here is a chart over the height http://www.heavens-above.com/IssHeight.aspx
A while back, all I saw was gradual decrease in height.
The interesting question is, how did the balance between matter and antimatter turn out? Apparantly, a break in symmetri occured, and thus more matter than antimatter was left. At least it looks like that in out part of the universe. This is, as far as i know, still a very debated question.
The number of electrons vs protons could be anything. It changes all the time. For instance, we can create electrons using light, and when we put an electron and positron together, electrons disappear. Therefore, the balance between protons and electrons can be anything.
Euclids algorithm for finding the greatest common divisor of two numbers must have been one of the first algorithms still widely used in programming. It's normally being taught as one of the first examples of recursive programming, along with an (inefficient) algorithm for finding fibonnaci numbers.
Euclids algorithm dates back to the ancient greeks, according to wikipedia.
The GCD algorithm is also called Euclid's algorithm, and according to Wikipedia:
Its major significance is that it does not require factoring the two integers, and it is also significant in that it is one of the oldest algorithms known, dating back to the ancient Greeks
Or, in fact p = mv * 1/(sqrt(1 - (v/c)^2)) to be absolutely correct. Who knows, maybe some day a physicist will find a better function to describe reality. After all, this is what physics is about.
Hi. I am a physics student. What I'd love to see is the LHC control room. At our department, we have a small particle accelerator in the basement. The controls there is some sight. It's especially interesting how the local physicists have made (sometimes rather homebrewn looking) equipment for the control computers in order to control the beam of electrons. I wonder how it must look at the LHC.
Also, try to get a look at the place where they inject particles into the ring.
A Carnot engine is a theoretical device, a heat engine, with the uniqe property of having the maximum theoretical heat effeciency a heat engine can have. (The carnot engine is very impractical.)
No heat engine operating between two heat resouars with temperatures T and t, t less than T, can have an effeciency of more than e = 1 - t/T. (t and T are in kelvin) For an engine operating at 70 % effeciency, e = 0.7, so T = t/(1 - 0.7). If the cooler works at room temperature, we can probably set t = 20 degrees centigrade = 293 kelvin. Therefore, T = 293/0.3 = 977 kelvin ~ 700 degrees celcius ~ 1300 degrees fahrenheit.
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> The overall effect of "relativistic time slowing" is tiny and is in the nano-second ballpark, however when calculating positions using GPS a few nano-seconds can mean a few meters...
No, it's in the micro-second ballpark (around 38 microseconds a day) which leads to /kilometers/ of inaccuracy a day, if you do not count in relativity.
11
That's just typical. Slackware, being my primary (and most often only) OS since I began using Linux, didn't fully support my new 64 bit machine.
So I switch to Gentoo (those extra cores had to have a reason..), and when I finally get
settled with Gentoo, Slackware goes 64 bit.
I blinked a few times over the extra update,
until I read that it wast just Steven J. Vaughan-Nichols' speculations. Apparantly, the claim
that Google got DDOS'ed is not confirmed.
Parent is overrated.
Surface area gives drag forces allright, but higher density gives higher inertial mass per surface area, at least for objects like lost toolbags.
Mathematicians could probably dream up some sort of toolbag where this is not true, however...
No, the ISS has merely been stabilizing its first orbit. In LEO's you experience some atmospheric drag. Here is a chart over the height
http://www.heavens-above.com/IssHeight.aspx
A while back, all I saw was gradual decrease in height.
And will thus become self-aware
Note that, for speed, some virtual processors use real instructions whenever
they can..
In a UNIX like command line, you just type the first few letters of what you need, and press "tab" /usr/bin.
(see tab completion). You should ls
Air is ~80% nitrogen, so for many purposes,
air = nitrogen. At least from a physicists point of view.
To make liquid nitrogen: collect a lot of air,
compress it violently, wait for it to cool down
and release into bottle...
About the number of protons vs electrons.
The interesting question is, how did the
balance between matter and antimatter
turn out? Apparantly, a break in symmetri
occured, and thus more matter than
antimatter was left. At least it looks
like that in out part of the universe.
This is, as far as i know, still a very
debated question.
The number of electrons vs protons
could be anything. It changes all the time.
For instance, we can create electrons
using light, and when we put an electron
and positron together, electrons disappear.
Therefore, the balance between protons and
electrons can be anything.
"Data expands to fill the space available for storage".
Euclids algorithm for finding the greatest common divisor of two numbers must have been one of the first algorithms still widely used in programming.
It's normally being taught as one of the first
examples of recursive programming, along
with an (inefficient) algorithm for finding
fibonnaci numbers.
Euclids algorithm dates back to the ancient greeks,
according to wikipedia.
The GCD algorithm is also called
Euclid's algorithm, and according to
Wikipedia:
Its major significance is that it does not require factoring the two integers, and it is also significant in that it is one of the oldest algorithms known, dating back to the ancient Greeks
> Or, to put it in mathematical terms p=mv.
Or, in fact
p = mv * 1/(sqrt(1 - (v/c)^2))
to be absolutely correct.
Who knows, maybe some day a physicist
will find a better function to describe
reality. After all, this is what physics is about.
Math has nothing to do with reality.
Hi. I am a physics student. What I'd love
to see is the LHC control room.
At our department, we have a small particle accelerator in the basement.
The controls there is some sight. It's especially interesting
how the local physicists have made (sometimes rather homebrewn looking) equipment for the control computers
in order to control the beam of electrons. I wonder how it must look at the LHC.
Also, try to get a look at the place where they inject particles
into the ring.
A Carnot engine is a theoretical device, a heat engine,
with the uniqe property of having the maximum
theoretical heat effeciency a heat engine can have.
(The carnot engine is very impractical.)
No heat engine operating between two heat resouars
with temperatures T and t, t less than T, can have an effeciency
of more than e = 1 - t/T. (t and T are in kelvin)
For an engine operating at 70 % effeciency,
e = 0.7, so
T = t/(1 - 0.7). If the cooler works at room temperature,
we can probably set t = 20 degrees centigrade = 293 kelvin.
Therefore, T = 293/0.3 = 977 kelvin ~ 700 degrees celcius ~ 1300 degrees fahrenheit.
Solder melts at about 200 degrees celcius.
> Can't the Chinese just shoot it down for us?
:-)
Perhaps they already did, which is why it's missing?