When you beta read a story, it means you proofread it and edit it. Basically, you look for errors (in grammar and structure) and correct them.
It depends on what you mean. If you mean when beta is finished, it will be somewhere near 11/11/2011. But if you mean the beta 1.7.3 (that's the beta version when this was answered), then yes.
full beta
yes
ex ante beta
What? a beta tester? I think means they tried out club penguin when it was beta (When it first opened)
There's no such Spanish word as "beta"
There is no way to formally send a beta request on the site (fanfiction.net), but you can PM (Private Message) the user who you'd wish to have beta your story. You'll need to first speak with them and describe the story or stories you want them to beta, and work out a system.
By beta, I think you mean "snapshot" and they can be found on Mojang's website: mojang.com
Call of duty 5 beta? Your a bit to late as we are on the 8th COD. If you mean the MW3 beta, they is no beta for the public to download.
'Beta' was a term used by Leah Clearwater for the Alpha's second-in-command.
The mean energy of a beta particle is typically lower than the maximum energy. This is because beta decay produces a spectrum of energies, with some particles having lower energy levels and some reaching the maximum energy allowed by the decay process. The mean energy is a measure of the average energy of all emitted beta particles.
The beta of a portfolio is the weighted average of individual betas of assets in that portfolio. There is an example of portfolio beta calculation here: http://www.riskyreturn.com/portfolio_beta.html