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Is there an arXiv or PubMed for astronomy?
Science questions not worth a thread I: I'm a moron!
- Thread starter The Imp
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I think arXiv has astronomy too. I tried to search with word "pulsar" (first one that came to my mind) and got multiple results.
Q: Have physicists considered multidimensional or complex time? Is it just outright stupid idea?
Q: Have physicists considered multidimensional or complex time? Is it just outright stupid idea?
ParadigmShifter
Random Nonsense Generator
Looks like they have http://en.wikipedia.org/wiki/Imaginary_time
EDIT: Matsubara frequencies seems a bit of a poor choice of name though
Maybe it has something to do with Kummer.
EDIT: Matsubara frequencies seems a bit of a poor choice of name though
Maybe it has something to do with Kummer.It is not outright stupid but it is problematic. When you consider time in physics, it's most important property is that it orders events. That requires a partially ordered set that is defined on time. But you can only define a partially ordered set on one-dimensional vector spaces.
Quackers
The Frog
Can a space shuttle exceed the speed of light?
madviking
north american scum
No .
Quackers
The Frog
How are we meant to escape our solar system then?
madviking
north american scum
The Voyager and Pioneer spacecrafts used gravity slingshots around the gas giants to give them enough velocity to escape the solar system.
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Can someone tell me why diethylamine has such horrifying effects when ingested? What does what appears to be an unassuming molecule do on the molecular level?
PlutonianEmpire
King of the Plutonian Empire
If an Earthlike planet (oceans, complex life, breathable air, the whole works) had an average temperature of 49 degrees (Fahrenheit 
), how far south/north might the ice caps grow? What latitude, generally?
And at what average temperature would it become too cold for complex life to survive?
), how far south/north might the ice caps grow? What latitude, generally?And at what average temperature would it become too cold for complex life to survive?
That's only around 5 K lower than the current average temperature of th earth. It was colder than that in the last ice age. So pick an ice age with an average temperature that suits you and find maps for the ice coverage for that and go from there.
As there are a lot of factors involved, I don't think modeling the temperature distribution is an easy task, so just take the earth as example.
The fact that we exist should tell you that complex life can survive such temperatures.
As there are a lot of factors involved, I don't think modeling the temperature distribution is an easy task, so just take the earth as example.
The fact that we exist should tell you that complex life can survive such temperatures.
PlutonianEmpire
King of the Plutonian Empire
How cold would the average temperature need to be in order for the ice caps to get as far as 32 degrees latitude from the equator?
IdiotsOpposite
Boom, headshot.
272 K would do it.
Quackers
The Frog
What would be the effects on an astronaut on a long distance mission say 2 years to a planet and two years back? Psychologically.
IdiotsOpposite
Boom, headshot.
He would be very very lonely.
PlutonianEmpire
King of the Plutonian Empire
Wow, that's cold. How much colder would it need to be for 32 degrees north/south to be the average distance from the equator for the ice caps? Would complex life survive, or even evolve, on such a cold planet, assuming those temps were long-term?
Perfection
The Great Head.
I dunno how Idiot did it (please do explain, Idiot), but here's a quick and dirty way of guessing. Get a world map of average temperature. (something like this) Put your estimate down as to where the ice caps begin. Find the average temperature at that lattitude. Then find the average temperature at 32 degrees. Subtract the difference between the two temperatures from the average temperature of Earth, and there's your answer.
IdiotsOpposite
Boom, headshot.
Basically, I took the freezing temperature, and lowered it slightly. If the average temperature on Earth were below freezing, the majority of the water would be frozen, would it not?
But I'm not considering the effect of salts that would lower the freezing point of t3h water.
Nice way to contract his name, Perf! 
I'd like to ask how many piano tuners there are in New York.
I'd like to ask how many piano tuners there are in New York.
IdiotsOpposite
Boom, headshot.
Nice way to contract his name, Perf!
Believe it or not, I'm used to it.
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