Re: [ccp4bb] popular piece on X-ray crystallography

2013-04-21 Thread Navdeep Sidhu
The cycles of accretion, nuclear interconversions and cooling of matter is far from complete but if we fast forward the universe by n billions of years, it's remarkable how much of it turns out to be crystalline. A bit like a crystallization trial at a cosmic scale. Does assume an expanding(-eno

Re: [ccp4bb] popular piece on X-ray crystallography

2013-04-21 Thread Colin Nave
Boaz Shaanan sent me a nice reply about my comments below and gently mentioned that Debye was pursuing Bohrs orbits theory - not yet orbitals which came later. So this was an incorrect term which I used. The difference is something like Orbits - well defined path of electron round the nucleus Or

Re: [ccp4bb] popular piece on X-ray crystallography

2013-04-21 Thread Colin Nave
James's original rather short comment about Debye's key observation in 1915 was clearly casting in to the CCP4BB fish pond to see who would bite. I guess I was that fish. There seems to be some confusion over dates (1914 or 1915) but this is not important. I agree that determining the size of