A Quote by Enrico Fermi
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
Related Quotes
The technologists claim that if everything works [in a nuclear fission reactor] according to their blueprints, fission energy will be a safe and very attractive solution to the energy needs of the world. ... The real issue is whether their blueprints will work in the real world and not only in a "technological paradise."... Opponents of fission energy point out a number of differences between the real world and the "technological paradise." ... No acts of God can be permitted.
Atoms have a nucleus, made of protons and neutrons bound together. Around this nucleus shells of electrons spin, and each shell is either full or trying to get full, to balance with the number of protons-to balance the number of positive and negative charges. An atom is like a human heart, you see.
With all reserve we advance the view that a supernova represents the transition of an ordinary star into a neutron star consisting mainly of neutrons. Such a star may possess a very small radius and an extremely high density. As neutrons can be packed much more closely than ordinary nuclei and electrons, the gravitational packing energy in a cold neutron star may become very large, and under certain conditions may far exceed the ordinary nuclear packing fractions.
O. Hahn and F. Strassmann have discovered a new type of nuclear reaction, the splitting into two smaller nuclei of the nuclei of uranium and thorium under neutron bombardment. Thus they demonstrated the production of nuclei of barium, lanthanum, strontium, yttrium, and, more recently, of xenon and caesium. It can be shown by simple considerations that this type of nuclear reaction may be described in an essentially classical way like the fission of a liquid drop, and that the fission products must fly apart with kinetic energies of the order of hundred million electron-volts each.
I must furnish those, who would protect or save life, with an energy source, which produces energy so cheaply that nuclear fission will not only be uneconomical, but ridiculous. This is the task I have set myself in what little life I have left.
The universe consists of 5% protons, 5% neutrons, 5% electrons and 85% morons.
Divorce: fission after fusion.
In the lab, we could not see or physically describe the mathematical objects that we called quarks, which we suspected were the key to unlocking the dynamics of the strong force that binds together the clump of protons and neutrons at the center of the atom.
No-one really thought of fission before its discovery.
In the design of fission reactors man was not an innovator but an unwitting imitator of nature.
We can and should complain about certain horrors of the modern world, but when it comes to the treatment of mental illness, the advances made in the last hundred years have been far more significant than the space program, nuclear fission, or even The Wire, for so many fortunate people.
There's stable subatomic particles - protons, neutrons, electrons - and then there's unstable ones that decay into stable ones. One will become many. There's this constant process of transformation that underlies everything in the entire universe. They also make these beautiful marks through time. It's like the universe was drawing, essentially, at this fundamental level. There's always an alphabet that's based in natural patterns. Sometimes they're just by themselves, sometimes they build up these other things that relate to the conception, that are more at our level of existence.
Maybe the body learns from dreams. Maybe the muscles, the neutrons, revitalize.
I think God is as much a basic ingredient in the universe as neutrons and positrons. This is the prime force, when we look around the universe.
The Highway Code can't be that difficult to understand, and yet my brain seems to treat it as a set of nuclear fission instructions in Old Japanese.
In the tail above the giant resonance, you can get not just one neutron emitted but two, three, four or five, and so there are a lot of things one can measure, looking at the competition with the emission of neutrons and protons and so on.
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