Formerly About Advanced Micro Devices Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Formerly About Advanced Micro Devices

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: Maxwell who wrote (39094)	10/13/1998 12:39:00 AM
From: Paul Engel	Read Replies (1) of 1572416

Maxwell - Re: "Fermi demonstrated the fist atomic pile at University of Chicago. " Fermi created his FIRST atomic pile in a laboratory at Columbia University. The "pile" was built to measure the neutron "reproduction factor", k, for a "pile" of graphite bricks interspersed with Uranium Oxide. The purity of the materials led to a k factor of 0.87, where 1.0 would be "critical" for neutron production - the ratio of neutrons lost from the pile to the neutrons GENERATED BY the pile. This was in 1941. After Dec. 7, 1941 support for these experiments went "critical". Fermi moved to the University of Chicago and the "Manhattan Project" infrastructure began to develop. Better purity materials were made available and Fermi constructed his SECOND pile below the U of C football stadium. This pile "went critical" on Dec. 2, 1942 - proving that a sustained nuclear reaction was achievable (i.e., it was ACHIEVED), with k = 1.006. Paul

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next