Authors
Topics
Lists
Pictures
Resources
More about Paul Dirac
Paul Dirac -
Equations
Quotes
8 Sourced Quotes
View all Paul Dirac Quotes
Source
Report...
The underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws leads to equations much too complicated to be soluble. It therefore becomes desirable that approximate practical methods of applying quantum mechanics should be developed, which can lead to an explanation of the main features of complex atomic systems without too much computation.
Paul Dirac
Source
Report...
A great deal of my work is just playing with equations and seeing what they give.
Paul Dirac
Source
Report...
I don't suppose that applies so much to other physicists; I think it's a peculiarity of myself that I like to play about with equations, just looking for beautiful mathematical relations which maybe don't have any physical meaning at all. Sometimes they do.
Paul Dirac
Source
Report...
It is more important to have beauty in one's equations than to have them fit experiment…The discrepancy may well be due to minor features…that will get cleared up with further developments.
Paul Dirac
Source
Report...
Causality applies only to a system which is left undisturbed. If a system is small, we cannot observe it without producing a serious disturbance and hence we cannot expect to find any causal connexion between the results of our observations. Causality will still be assumed to apply to undisturbed systems and the equations which will be set up to describe an undisturbed system will be differential equations expressing a causal connexion between conditions at one time and conditions at a later time. These equations will be in close correspondence with the equations of classical mechanics, but they will be connected only indirectly with the results of observations.
Paul Dirac
Source
Report...
It seems that if one is working from the point of view of getting beauty in one's equations, and if one has really a sound insight, one is on a sure line of progress. If there is not complete agreement between the results of one's work and experiment, one should not allow oneself to be too discouraged, because the discrepancy may well be due to minor features that are not properly taken into account and that will get cleared up with further development of the theory.
Paul Dirac
Source
Report...
Just by studying mathematics we can hope to make a guess at the kind of mathematics that will come into the physics of the future. A good many people are working on the mathematical basis of quantum theory, trying to understand the theory better and to make it more powerful and more beautiful. If someone can hit on the right lines along which to make this development, it may lead to a future advance in which people will first discover the equations and then, after examining them, gradually learn how to apply them.
Paul Dirac
Source
Report...
I consider that I understand an equation when I can predict the properties of its solutions, without actually solving it.
Paul Dirac
Quote of the day
I think no woman I have had ever gave me so sweet a moment, or at so light a price, as the moment I owe to a newly heard musical phrase.
Stendhal
Paul Dirac
Creative Commons
Born:
August 8, 1902
Died:
October 20, 1984
(aged 82)
More about Paul Dirac...
Featured Authors
Lists
Predictions that didn't happen
If it's on the Internet it must be true
Remarkable Last Words (or Near-Last Words)
Picture Quotes
Confucius
Philip James Bailey
Eleanor Roosevelt
Letitia Elizabeth Landon
Popular Topics
life
love
nature
time
god
power
human
mind
work
art
heart
thought
men
day
×
Lib Quotes