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Rare video smuggled from North Korea showing soldiers at work in a construction site

Three guys running cement mixer and a shitton of dudes just standing around staring, I'm glad construction culture is the same around the world


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Published 2 months ago VXV
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Published 2 months ago VXV
14 views

Rare video smuggled from North Korea showing soldiers at work in a construction site

Three guys running cement mixer and a shitton of dudes just standing around staring, I'm glad construction culture is the same around the world

Put some Uranium 238 in a cloud chamber to see the radioactive particles [VIDEO]

Uranium-238 is the most common isotope of uranium found in nature, with a relative abundance of 99%. Unlike uranium-235, it is non-fissile, which means it cannot sustain a chain reaction in a thermal-neutron reactor. However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239. 238U cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission of one or more next-generation nuclei is probable. Doppler broadening of 238U's neutron absorption resonances, increasing absorption as fuel temperature increases, is also an essential negative feedback mechanism for reactor control.


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Published 2 months ago VXV
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Published 2 months ago VXV
28 views

Put some Uranium 238 in a cloud chamber to see the radioactive particles [VIDEO]

Uranium-238 is the most common isotope of uranium found in nature, with a relative abundance of 99%. Unlike uranium-235, it is non-fissile, which means it cannot sustain a chain reaction in a thermal-neutron reactor. However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239. 238U cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission of one or more next-generation nuclei is pr...