critical mass
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critical mass

In nuclear physics, the minimum mass of fissile material that can undergo a continuous chain reaction. Below this mass, too many neutrons escape from the surface for a chain reaction to carry on; above the critical mass, the reaction may accelerate into a nuclear explosion.

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fission
Frisch - Peierls memorandum

Frisch, Otto Robert
star

It addresses the mass of fissile materials needed to "make a bomb, yet it's clear that the critical masses given--10 kilograms for plutonium-239, 50 kg for uranium-235, and 60 kg for neptunium-237--are for bare spheres with no neutron moderation, reflection, or other factors contributing to going critical.

Critical concern. (Letters) by Marshall, Robert (US Peace Corps volunteer) / Science News

This is important during industry consolidation as portfolios grow to critical masses of 5 million or more loans.

IBM Capacity Planning Services Tests and Benchmarks MortgageServ ... by Business Wire

As media has changed, the critical masses also have changed.

Nation's Experts Discuss Future of Hispanic Marketing At All-Day ... by Business Wire

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critical mass (redirected from critical masses)

critical mass

critical mass
(redirected from critical masses)