Showing posts with label chemistry. Show all posts
Showing posts with label chemistry. Show all posts

Monday, 12 May 2008

A Universe Smaller Than A Marble


Scientists at Lancaster University have created a Universe (or something very much like it).

It lies at the bottom of a chamber no bigger than your little finger, filled with helium and cooled to 0.0003 degrees Fahrenheit above absolute zero.


'By placing helium in a state which most closely resembles the form it held at the beginning of the universe, scientists have created an opportunity for the gas to go through several low-energy evolutions. These defects in space-time, are represented by tiny whirlpools in the helium, which are created by the rapid expansion, and equally rapid slowing of the expansion; something that it’s believed our own universe did at the big bang and in the moments thereafter.'


.......more here

Saturday, 3 November 2007

20,000lbs Of Sodium In A Lake

I can't get the embedding to work for this fascinating piece of film.
It features the 1947 disposal of 20,000lbs of metallic sodium into Lake Lenore in Washington State.