238947

238947 is a number following 238946. Interestingly enough, it also precedes 238948.

x+1 = 238948
x = 238947

by mister cow November 10, 2007

uranium 235

Uranium235 is an isotope of uranium that differs from the element's other common isotope, uranium-238, by its ability to cause a rapidly expanding fission chain reaction. A uranium nucleus that absorbs a neutron splits into two lighter nuclei; this is called nuclear fission. It releases either two or three neutrons which continue the reaction. In nuclear reactors, the reaction is slowed down by the addition of control rods which are made of elements such as boron, cadmium, and hafnium which can absorb a large number of neutrons. In nuclear bombs, the reaction is uncontrolled and the large amount of energy released creates a nuclear explosion.

One atom of U-235 generates 200 MeV = 3.2 × 10-11 J, i.e. 18 TJ/mol = 77 TJ/kg.

Only around 0.72% of all natural uranium is uranium-235, the rest being mostly uranium-238. This concentration is insufficient for a self sustaining reaction; enrichment, which just means separating out the uranium-238, must take place to get a usable concentration of uranium-235. For an explosion, approximately 90% purity is required.

Have fun with u235. Play catch with it or something.

by werwertwgg432 January 31, 2005

23 savage

Another Fake Ass Wanna Be

Da boul 23 Savage A Clown

by Gybricks March 25, 2017

November 23rd

National nothing day. Sit around all day and do absolutely nothing for the whole day.

Reed : “I don’t want to do anything today”
Emma : “is it November 23rd ?”

by MiniMint November 22, 2019

December 23

National shit your pants day, take laxatives and shit yourself

Ah shitt I'ma paint my house brown its December 23

by ShitMaster420 December 23, 2019

November 23

is the day where you ask out your crush and they have to say yes.

“bro on November 23, you have to ask out your crush. they can’t say no!”

by c00chie man November 22, 2020

23:11

11:11 PM. Not the real 11:11. Wishes should be made at 11:11 AM if they are to come true. All you people wonder why your wishes don't come true. It's probably because you are wishing at the wrong time. There is only one 11:11.

1: Damn it, my wish still didn't come true.
2: That's because you didn't make it at 11:11.
1: Aw shit, you're right! It's 23:11 right now. =(

by Hirshey October 7, 2009