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her new url is
http://faculty.cns.uni.edu/~morgan/ajjar/Cosmology/cosmos.html
her cosmology calculator is a handy resource especially since Ned Wright modified his cosmology calculator earlier this year----July sometime.
Now, with Wright's, you can't input a redshift z.
You have to input a "light travel time" and then it tells you the z.
this is not intuitive to me because what one OBSERVES is a redshift z and then one wants to know things like how far away and what light travel time was etc.
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with Siobhan you have to type in parameters
0.27 for "omega" (abbr. omega sub matter, the matter component)
0.73 for "lambda" (cosmological constant component)
71 for H
Ned Wright gives you these values of the parameters as a default.
If anyone has a link for some other alternative cosmology calculator, please post. I think Hellfire programmed his own but i don't have a link.
http://faculty.cns.uni.edu/~morgan/ajjar/Cosmology/cosmos.html
her cosmology calculator is a handy resource especially since Ned Wright modified his cosmology calculator earlier this year----July sometime.
Now, with Wright's, you can't input a redshift z.
You have to input a "light travel time" and then it tells you the z.
this is not intuitive to me because what one OBSERVES is a redshift z and then one wants to know things like how far away and what light travel time was etc.
============
with Siobhan you have to type in parameters
0.27 for "omega" (abbr. omega sub matter, the matter component)
0.73 for "lambda" (cosmological constant component)
71 for H
Ned Wright gives you these values of the parameters as a default.
If anyone has a link for some other alternative cosmology calculator, please post. I think Hellfire programmed his own but i don't have a link.
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