Rays Definition and 312 Threads

http://arxiv.org/astro-ph/0408310 The Origin of Cosmic Rays - A 96-Year-Old Puzzle Solved? Arnon Dar Invited talks to be published in the proceedings of the 2004 La Thuile Workshop on Perspectives In High energy Physics, La Thuile, Aosta Valley, Italy, February 29-March 6, 2004...

Hi all, I need a little help here please? Please can somebody answer my question with regards to bio ceramics? I am looking for a way to produce a ceramic that will emitt far infra rays. It would be used in the aquatic scene for biological filtration in a form of trickle towers.But what I need...

-------------------------------------------------------------------------------- Hi all, I need a little help here please? Please can somebody answer my question with regards to bio ceramics? I am looking for a way to produce a ceramic that will emitt far infra rays. It would be used in the...

All those sources of all sorts of potentialy healthfull but also potentialy deadly rays - I mean: natural ones (like sun (ozon holes)) and artificial - like - Roentgen machine, lightning rods with radioactive elements, or those that are here due tu people not having any idea what they did (like...

I know a prisim can be used to disperse white light into colors. This does not happen when a beam of light passes through a window pane.Why not?( the light may or may not be entering the glass window along the normal. The light does not disperse into colors). thanks

Why is it that we think ultra high energy cosmic rays are emitted from supernovae.

1. The light rays from the sun and artificial lights, are all light rays made up of 'photons' which travel in the form of waves? 2. During a sunstorm, when the Auroras form in the ionosphere by electrons colliding with atomic o2 and atomic nitrogen, can these electrons be thought of as 'Beta...

some news about the origin of gamma ray bursts, this may be old news to some.there have been many theories for the production of gamma rays, it seems now that the search is narrowing. http://www1.msfc.nasa.gov/NEWSROOM/news/releases/2003/03-041.html Using NASA's Chandra X-ray...

http://www.newscientist.com/news/news.jsp?id=ns99994198

hi:smile: i was approached by this problem, prove q/m = (2V)/(B^2r^2) [2V over B-squared r-squared] so far i have, F[electric] = qE F[magnetic] = Qvb F[electric] = F[magnetic] therefore, v = E/B ----- now i am a bit confused/wrong ----- E[kinetic] = (mv^2)/2...

This is an unusually important question. Could one determine the approximate age of a manufactured bismuth/magnesium/zinc composite somehow by the effects of UV, cosmic rays, or some other type of energetic particle acting on the material? For example, by microscopic examination or by some...

can beta rays target alpha rays? like specific atoms etc.?