Recent content by cymric

Recently, astronomers have reported the observation of what they think of as dark matter in two colliding galaxies. They used observations from two sources: the Chandra X-ray observatory for the distribution of visible matter, and a gravitational lense for the distribution of...

After hard searching, I came up with a text which writes out the equations in full. It did require a bit of Real World data to 'drive' the function, and then reminded me what a pain it is to work with density functions which must be normalised (and what an even bigger pain it is if you want to...

Thanks for your answer, but this doesn't help me one bit. It's precisely the exact shape I'm after.

Does anyone have a link or pointer to preferably freely available software with which I can calculate the energy spectrum of the electrons or positrons liberated in regular beta or beta+ - decay for a given isotope? My background is not in physics (chemical engineering, rather), and although I...