Definitions for: Quantum


[n] how much there is of something that you can measure
[n] (physics) the smallest quantity of some physical property that a system can possess (according to quantum theory)



Webster (1913) Definition: Quan"tum, n.; pl. Quanta. [L., neuter of quantus how
great, how much. See Quantity,]
1. Quantity; amount. ``Without authenticating . . . the
quantum of the charges.'' --Burke.

2. (Math.) A definite portion of a manifoldness, limited by a
mark or by a boundary. --W. K. Clifford.

Quantum meruit[L., as much as he merited] (Law), a count in
an action grounded on a promise that the defendant would
pay to the plaintiff for his service as much as he should
deserve.

Quantum sufficit, or Quantum suff.

Synonyms: amount, measure, quantity

See Also: abstraction, chance, cordage, definite quantity, economic value, fundamental measure, fundamental quantity, indefinite quantity, interval, linear measure, long measure, magnetisation, magnetization, octane number, octane rating, period of play, play, playing period, probability, proof, quantity, relative quantity, system of measurement, time interval, time unit, unit of time, value, volume




Famous Quotes Containing Quantum:


I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have new insights about the quantum states of black holes.

-- Edward Witten (American Mathematician)

In relativity, movement is continuous, causally determinate and well defined, while in quantum mechanics it is discontinuous, not causally determinate and not well defined.

-- David Bohm (American Scientist)

Quantum computation is... a distinctively new way of harnessing nature... It will be the first technology that allows useful tasks to be performed in collaboration between parallel universes.

-- David Deutsch ( Scientist)

But to do it professionally is a quantum leap difference and my father had to be persuaded by these kind of Ivy League professors that I should go to the Yale Drama School, another one of the stories in there.

-- Robert Klein (American Comedian)

The scientists often have more unfettered imaginations than current philosophers do. Relativity theory came as a complete surprise to philosophers, and so did quantum mechanics, and so did other things.

-- Robert Nozick (American Philosopher)

Because of recent improvements in the accuracy of theoretical predictions based on large scale ab initio quantum mechanical calculations, meaningful comparisons between theoretical and experimental findings have become possible.

-- Yuan T. Lee ( Scientist)

Quantum theory also tells us that the world is not simply objective; somehow it's something more subtle than that. In some sense it is veiled from us, but it has a structure that we can understand.

-- John Polkinghorne (British Physicist)

If we look at the way the universe behaves, quantum mechanics gives us fundamental, unavoidable indeterminacy, so that alternative histories of the universe can be assigned probability.

-- Murray Gell-Mann (American Physicist)

The problem is that replacement of Quantum Mechanics by Quantum Field Theory is still very demanding.

-- Martin Fleischmann (English Scientist)

The mathematical framework of quantum theory has passed countless successful tests and is now universally accepted as a consistent and accurate description of all atomic phenomena.

-- Erwin Schrodinger (Austrian Scientist)

Einstein was searching for String Theory. It not only reconciles General Relativity to Quantum Mechanics, but it reconciles Science and the Bible as well.

-- Roy H. Williams (American Businessman)

But I don't actually adopt the point of view that our subjective impression of free will, which is a kind of indeterminacy behavior, comes from quantum mechanical indeterminacy.

-- Murray Gell-Mann (American Physicist)

When I moved to Stanford I began to pursue the line of research I have been following ever since, namely trying to understand the larger implications of fractional quantum hall discovery.

-- Robert B. Laughlin ( Physicist)

I mean, we're really making a quantum change in our relationship to the plant world with genetic modification.

-- Michael Pollan (American Educator)

If you start any large theory, such as quantum mechanics, plate tectonics, evolution, it takes about 40 years for mainstream science to come around. Gaia has been going for only 30 years or so.

-- James Lovelock (English Scientist)

There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology of spacetime to change.

-- Edward Witten (American Mathematician)

If someone says that he can think or talk about quantum physics without becoming dizzy, that shows only that he has not understood anything whatever about it.

-- Murray Gell-Mann (American Physicist)

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

-- Niels Bohr (Danish Physicist)

I believe that the quantum of our knowledge will increase considerably in the coming years and that scientists will continue to be amongst the brave voices speaking out.

-- Peter Garrett (Australian Musician)

Readers probably haven't heard much about it yet, but they will. Quantum technology turns ordinary reality upside down.

-- Michael Crichton (American Author)

Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle.

-- Edward Witten (American Mathematician)

The chaos can act as a magnifier of quantum fluctuations so that they can produce sizable effects in the world around us. But we know that that can happen often.

-- Murray Gell-Mann (American Physicist)

Quantum Mechanics and General Relativity are both accepted as scientific fact even though they're mutually exclusive. Albert Einstein spent the second half of his life searching for a unifying truth that would reconcile the two.

-- Roy H. Williams (American Businessman)

When His Holiness won the Nobel Peace Prize, there was a quantum leap. He is not seen as solely a Tibetan anymore; he belongs to the world.

-- Richard Gere (American Actor)

The verbal interpretation, on the other hand, i.e. the metaphysics of quantum physics, is on far less solid ground. In fact, in more than forty years physicists have not been able to provide a clear metaphysical model.

-- Erwin Schrodinger (Austrian Scientist)

Similarly, another famous little quantum fluctuation that programs you is the exact configuration of your DNA.

-- Seth Lloyd (American Educator)

It is difficult for me to believe that quantum mechanics, working very well for currently practical set-ups, will nevertheless fail badly with improvements in counter efficiency.

-- John S. Bell (Irish Physicist)

Quantum physics thus reveals a basic oneness of the universe.

-- Erwin Schrodinger (Austrian Scientist)

According to the standard model billions of years ago some little quantum fluctuation, perhaps a slightly lower density of matter, maybe right where we're sitting right now, caused our galaxy to start collapsing around here.

-- Seth Lloyd (American Educator)

Now, what that means is that there is fundamental indeterminacy from quantum mechanics, but besides that there are other sources of effective indeterminacy.

-- Murray Gell-Mann (American Physicist)

Doing is a quantum leap from imagining.

-- Barbara Sher (American Businessman)

Well, I've always thought that my career was in England, really. I used to do more in the theatre, and I felt that I should be there. It's not far is it? It's amazing the way that special FX have taken a quantum leap in what they're capable of doing.

-- Albert Finney (British Actor)

Nevertheless, all of us who work in quantum physics believe in the reality of a quantum world, and the reality of quantum entities like protons and electrons.

-- John Polkinghorne (British Physicist)

In fact any experiment that measures a quantum effect is one in which the quantum effect is aligned with the behavior of some heavy, macroscopic object; that's how we measure it.

-- Murray Gell-Mann (American Physicist)

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 (Danish Physicist)


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