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Definition of Quantum


  1. Quantity; amount.
  2. A definite portion of a manifoldness, limited by a mark or by a boundary.

Quantum Quotations

Old Newtonian physics claimed that things have an objective reality separate from our perception of them. Quantum physics, and particularly Heisenberg's Uncertainty Principle, reveal that, as our perception of an object changes, the object itself literally changes.
Marianne Williamson

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.
Niels Bohr

Life is strong and fragile. It's a paradox... It's both things, like quantum physics: It's a particle and a wave at the same time. It all exists all together.
Joan Jett

I became an atheist because, as a graduate student studying quantum physics, life seemed to be reducible to second-order differential equations. Mathematics, chemistry and physics had it all. And I didn't see any need to go beyond that.
Francis Collins

If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.
Niels Bohr
More "Quantum" Quotations

Quantum Translations

quantum in German is Betrag