User talk:Ququ

Welcome!

Hello, Ququ, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{helpme}} before the question. Again, welcome! - Darwinek (talk) 20:55, 25 August 2008 (UTC)[reply]

Speed of LHC hadrons

Hi There is indeed at least one place on the CERN web site that says 99.99%c, but that is a slip up and not really correct, except that 99.99% is not so very different from 99.9999991%, in a certain sense. However, if you compute it correctly based on 7 TeV proton energy, you find that 99.9999991% really is right, and this same number appears elsewhere in the CERN documentation, so it is not WP:OR. Wwheaton (talk) 09:53, 30 October 2008 (UTC)[reply]

Of cause, I would agree with you if I consider proton mass m_p only. According to 3 page LHC has Pb Pb collision with only 2.76 TeV/n (per proton). It gives 99.999994 %. Alexander Mayorov (talk) 14:19, 30 October 2008 (UTC)[reply]