her new url is(adsbygoogle = window.adsbygoogle || []).push({});

http://faculty.cns.uni.edu/~morgan/ajjar/Cosmology/cosmos.html [Broken]

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.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Siobhan Morgan's cosmology calculator has a new url

**Physics Forums | Science Articles, Homework Help, Discussion**