
Finally, the roundest sphere in the whole wide world finally comes to Braunschweig, to the PTB tomorrow!
They are so in love with her, they call her "Diva" :-)
The guys from the PTB (national metrology institute providing scientific and technical services) are known for working exact.
Like their atomic clock that won´t go observably wrong even after some 100 000 years.
For some time now they are after the formula for the new kilogramme - with nano-technics around this seems very necessary. The ur-kilogramme in Paris might rub off with time, as well as the duplicate in Braunschweig might.
So, scientists search for a better solution using atoms.
The ball consists of silica and has a defined number of atoms.
It´s way started 2003 in Russia, St. Petersburg! Where they used the atomic institution in the cold war to develop something destructive they now go science. They produce silica in it´s purest form - gas. 1 1/2 years their centrifuges were spinning with it.
The material then in 2005 went to Nischniy Nowgorod for further research, an even more intensive cleaning and finally the crystallization.
In autumn 2006 the sphere came to Germany, Berlin to the institute of crystal growing.
The mass was melted there and the atoms rearranged consistent in the process of solidifying. At that time it´s a cylinder actually.
In Australian Sydney it is divided in two pieces and a German specialist modeled and polished two spheres there - one for Japan, one for Germany (Braunschweig).
The sphere has a weight of exactly one kilogramme and a diameter of 93,7 mm. You might find meanderings of only very few nanometers - millionths of a mm!
They gonna need about another 6 months for the "massage" of the atoms and then...
Then their "Diva" or "Sex Bomb of Physics" shall be ready!
I know I have nothing to do with this. Makes me proud none the less that my town is involved. And please don´t ask me what the material did in Sydney.
I hope I could translate ok - I found no free article in english from this place - here is the German article.
Well. That was what I brought Ingo yesterday - he wasn´t much into talking about it - a sign he is still sick!
The doctors cut all medication today. He was in big pain after having dinner. But just half an hour later, when I was home, he called to tell me he is better - must have been the digestion process.
They want to send him home on Friday. Today I thought, not a good idea. Let´s see how he is tomorrow.






