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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
Place
Defined
Cannot
Therefore
Localized
Thing
Value
Particle
Unless
Measurement
Theory
Mechanic
Since
Particles
Values
Momentum
Science
Accurate
More quotes by Richard P. Feynman
This attitude of mind - this attitude of uncertainty - is vital to the scientist, and it is this attitude of mind which the student must first acquire. It becomes a habit of thought. Once acquired, we cannot retreat from it anymore.
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If you thought that science was certain - well, that is just an error on your part.
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I learned very early the difference between knowing the name of something and knowing something.
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Work hard to find something that fascinates you.
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I think we can safely assume that no one understands quantum mechanics.
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The real problem in speech is not precise language. The problem is clear language.
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I have to keep going to find out ultimately what is the matter with it in the end.
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I love only nature, and I hate mathematicians.
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If you thought you were trying to find out more about it because you're gonna get an answer to some deep philosophical question...you may be wrong! It may be that you can't get an answer to that particular question by finding out more about the character of nature. But my interest in science is to simply find out about the world.
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It's amazing how many people even today use a computer to do something you can do with a pencil and paper in less time.
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I don't believe I can really do without teaching.
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Of course, you only live one life, and you make all your mistakes, and learn what not to do, and that's the end of you.
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I'm going to play with physics, whenever I want to, without worrying about any importance whatsoever.
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The first principle is that you must not fool yourself and you are the easiest person to fool.
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The only way to have real success in science, the field I'm familiar with, is to describe the evidence very carefully without regard to the way you feel it should be. If you have a theory , you must try to explain what's good and what's bad about it equally. In science, you learn a kind of standard integrity and honesty .
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I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy situation for me where I don't have to teach. Never.
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What did you ASK at school today?
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If you can't explain something to a first year student, then you haven't really understood .
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I don't know what's the matter with people: they don't learn by understanding, they learn by some other way — by rote or something. Their knowledge is so fragile!
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In physics the truth is rarely perfectly clear, and that is certainly universally the case in human affairs. Hence, what is not surrounded by uncertainty cannot be the truth.
Richard P. Feynman
