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Unless a thing can be defined by measurement, it has no place in a theory. And since an accurate value of the momentum of a localized particle cannot be defined by measurement it therefore has no place in the theory.
Richard P. Feynman
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Richard P. Feynman
Age: 69 †
Born: 1918
Born: May 11
Died: 1988
Died: February 15
Inventor
Percussionist
Physicist
Politician
Quantum Physicist
Science Communicator
Theoretical Physicist
University Teacher
Writer
Far Rockaway
New York
Richard Phillips Feynman
Richard P. Feynman
Ofey
Since
Particles
Values
Momentum
Science
Accurate
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Defined
Cannot
Therefore
Localized
Thing
Value
Particle
Unless
Measurement
Theory
Mechanic
More quotes by Richard P. Feynman
The fact that you are not sure means that it is possible that there is another way someday.
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Start out understanding religion by saying everything is possibly wrong... As soon as you do that, you start sliding down an edge which is hard to recover from.
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People are always asking for the latest developments in the unification of this theory with that theory, and they don't give us a chance to tell them anything about what we know pretty well. They always want to know the things we don't know.
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We can deduce, often, from one part of physics like the law of gravitation, a principle which turns out to be much more valid than the derivation.
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We find that the statements of science are not of what is true and what is not true, but statements of what is known with different degrees of certainty: It is very much more likely that so and so is true than that it is not true.
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Every instrument that has been designed to be sensitive enough to detect weak light has always ended up discovering that the same thing: light is made of particles.
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To not know math is a severe limitation to understanding the world.
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As you know, a theory in physics is not useful unless it is able to predict underlined effects which we would otherwise expect.
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Light is something like raindrops each little lump of light is called a photon and if the light is all one color, all the raindrops are the same.
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There is enough energy in a single cubic meter of space to boil all the oceans in the world.
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Science alone of all the subjects contains within itself the lesson of the danger of belief in the infallibility of the greatest teachers of the preceding generation.
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As revealed by physics, the truth is so remarkable, so amazing!
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Everything is made of atoms.
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(Joan,1941) She wrote me a letter asking,How can I read it?,Its so hard. I told her to start at the beginning and read as far as you can get until you're lost. Then start again at the beginning and keep working through until you can understand the whole book. And thats what she did
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Agnostic for me would be trying to weasel out and sound a little nicer than I am about this.
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People often think I'm a faker, but I'm usually honest, in a certain way--in such a way that often nobody believes me!
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Scientific views end in awe and mystery, lost at the edge in uncertainty, but they appear to be so deep and so impressive that the theory that it is all arranged as a stage for God to watch man's struggle for good and evil seems inadequate.
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Progress in science comes when experiments contradict theory.
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Therefore psychologically we must keep all the theories in our heads, and every theoretical physicist who is any good knows six or seven different theoretical representations for exactly the same physics.
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Some people say, How can you live without knowing? I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know.
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