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What makes a thing spin for a trillion years?

What makes a thing spin for a trillion years?

Science

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Originally posted by zeeblebot
didn't you just come into some money?

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http://en.wikipedia.org/wiki/Neutron_source

Small sized devices

Radioisotopes which undergo spontaneous fission
Certain isotopes undergo spontaneous fission with emission of neutrons. The most commonly used spontaneous fission source is the radioactive isotope californium-252. Cf-252 and all other ...[text shortened]... alue in 2.6 years. The price of a typical Cf-252 neutron source is from $15,000 to $20,000.
That first was totally unfounded, it was a sponge🙂