Richard Feynman Zitate
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Richard Phillips Feynman [ˈfaɪnmən] war ein US-amerikanischer Physiker und Nobelpreisträger des Jahres 1965.

Feynman gilt als einer der großen Physiker des 20. Jahrhunderts, der wesentliche Beiträge zum Verständnis der Quantenfeldtheorien geliefert hat. Zusammen mit Shin’ichirō Tomonaga und Julian Schwinger erhielt er 1965 den Nobelpreis für seine Arbeit zur Quantenelektrodynamik . Seine anschauliche Darstellung quantenfeldtheoretischer elementarer Wechselwirkungen durch Feynman-Diagramme ist heute ein De-facto-Standard.Für Feynman war es immer wichtig, die unanschaulichen Gesetzmäßigkeiten der Quantenphysik Laien und Studenten nahezubringen und verständlich zu machen. An Universitäten ist seine Vorlesungsreihe weit verbreitet. In Büchern wie QED: Die seltsame Theorie des Lichts und der Materie und Character of Physical Law wandte er sich an ein breiteres Publikum. Sein Charisma und die Fähigkeit, auf seine Zuhörerschaft einzugehen, ließen seine Vorlesungen und Vorträge legendär werden.

Seine unkonventionelle und nonkonformistische Art zeigte sich auch in seinen autobiographisch geprägten Büchern wie Sie belieben wohl zu scherzen, Mr. Feynman. Abenteuer eines neugierigen Physikers und Kümmert Sie, was andere Leute denken? In einem gleichnamigen Essay prägte er den Begriff der „Cargo-Kult-Wissenschaft“ für eine wissenschaftliche Disziplin, welche zwar der Form genügt, aber den Ansprüchen an den Inhalt nicht gerecht wird. Da der Begriff Cargo-Kult ursprünglich ein Verhaltensmuster von Ureinwohnern im Südpazifik beschrieb, zeigte dessen Verwendung in Bezug auf die Wissenschaft eine gewisse feinsinnige Respektlosigkeit. Wikipedia  

✵ 11. Mai 1918 – 15. Februar 1988   •   Andere Namen Richard Feynman Philips, Richard Phillips Feynman, Ричард Филлипс Фейнман
Richard Feynman Foto
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Richard Feynman Berühmte Zitate

„Der Trick sind die Idealisierungen. […] Dieses System ähnelt keineswegs dem der Mathematik, in welcher jedes Ding definiert werden kann, und dann wissen wir nicht, wovon wir reden. In der Tat ist es das Herrliche an der Mathematik, dass wir nicht sagen müssen, wovon wir reden. Das Herrliche liegt darin, dass die Gesetze, die Argumente und die Logik unabhängig davon sind, was "es" ist.“

Vorlesungen über Physik, Band I, Kap. 12.1 (Übersetzung: Heinz Köhler), Seite 165, Oldenbourg München Wien, 5. Aufl. 2007
Original englisch: "The trick is the idealizations. [...] This system is quite unlike the case of mathematics, in which everything can be defined, and then we do not know what we are talking about. In fact, the glory of mathematics is that we do not have to say what we are talking about. The glory is that the laws, the arguments, and the logic are independent of what 'it' is." - The Feynman Lectures on Physics: Quantum Mechanics. Addison-Wesley Pub. Co., 1965.

„Ein Philosoph hat einmal behaupet: 'Naturwissenschaft setzt notwendig voraus, dass gleiche Umstände immer auch gleiche Auswirkungen haben.' Nun, dem ist nicht so.“

Zitiert in Tony Hey und Patrick Walters: Das Quantenuniversum, Spektrum, Heidelberg 1990, ISBN 3-8274-0315-4 Kapitel 2 "Heisenberg und die quantenmechanische Unbestimmtheit" "Seite 33.
Original engl.: "A philosopher once said: 'It is necessary for the very existence of science that the same conditions always produce the same results'. Well, they do not." - The Character of Physical Law. A series of lectures recorded by the BBC at Cornell University. BBC 1965. Neuauflage Modern Library 1994

„[Energie]"Es ist wichtig, einzusehen, dass wir in der heutigen Physik nicht wissen, was Energie ist. Wir haben kein Bild davon, dass Energie in kleinen Klumpen definierter Größe vorkommt."“

Vorlesungen über Physik, Band I, Kap. 4.1 (Übersetzung: Heinz Köhler), Seite 46, Oldenbourg München Wien, 5. Aufl. 2007
Original engl.: "It is important to realize that in physics today, we have no knowledge of what energy is. We do not have a picture that energy comes in little blobs of a definite amount."

„Mir würde es gar nicht gefallen, zweimal zu sterben. Es ist so langweilig.“

Letzte Worte, 15. Februar 1988 - zu seiner Ehefrau, seiner Schwester und seiner Cousine, als er kurz aus einem durch Nierenversagen verursachten Koma erwachte.

Richard Feynman: Zitate auf Englisch

“Nature uses only the longest threads to weave her patterns, so each small piece of her fabric reveals the organization of the entire tapestry.”

Richard Feynman buch The Character of Physical Law

Quelle: The Character of Physical Law (1965), chapter 1, “The Law of Gravitation,” p. 34

“Why are the theories of physics so similar in their structure?”

Richard Feynman buch QED: The Strange Theory of Light and Matter

QED: The Strange Theory of Light and Matter (1985)

“In general, we look for a new law by the following process: First we guess it. Then we – now don't laugh, that's really true. Then we compute the consequences of the guess to see what, if this is right, if this law that we guessed is right, to see what it would imply. And then we compare the computation results to nature, or we say compare to experiment or experience, compare it directly with observations to see if it works. If it disagrees with experiment, it's wrong. In that simple statement is the key to science. It doesn't make any difference how beautiful your guess is, it doesn't make any difference how smart you are, who made the guess, or what his name is. If it disagrees with experiment, it's wrong. That's all there is to it.”

Richard Feynman buch The Character of Physical Law

same passage in transcript: video http://www.youtube.com/watch?v=-2NnquxdWFk&t=16m46s
The Character of Physical Law (1965)
Variante: In general we look for a new law by the following process. First we guess it. Then we compute the consequences of the guess to see what would be implied if this law that we guessed is right. Then we compare the result of the computation to nature, with experiment or experience, compare it directly with observation, to see if it works. If it disagrees with experiment it is wrong. In that simple statement is the key to science. It does not make any difference how beautiful your guess is. It does not make any difference how smart you are, who made the guess, or what his name is – if it disagrees with experiment it is wrong. That is all there is to it.

“I think I can safely say that nobody understands quantum mechanics.”

Richard Feynman buch The Character of Physical Law

Variante: I think I can safely say that nobody understands quantum mechanics.
Quelle: The Character of Physical Law (1965), chapter 6, “Probability and Uncertainty — the Quantum Mechanical View of Nature,” p. 129

“I hope … that you will find someday that, after all, it isn’t as horrible as it looks.”

volume III, "Feynman's Epilogue", p. 21-19
The Feynman Lectures on Physics (1964)

“Nature isn't classical, dammit, and if you want to make a simulation of nature, you'd better make it quantum mechanical, and by golly it's a wonderful problem, because it doesn't look so easy.”

" Simulating Physics with Computers http://www.cs.berkeley.edu/~christos/classics/Feynman.pdf", International Journal of Theoretical Physics, volume 21, 1982, p. 467-488, at p. 486 (final words)

“There are 1011 stars in the galaxy. That used to be a huge number. But it's only a hundred billion. It's less than the national deficit! We used to call them astronomical numbers. Now we should call them economical numbers.”

from a 1987 class, as quoted in David L. Goodstein, "Richard P. Feynman, Teacher," Physics Today, volume 42, number 2 (February 1989) p. 70-75, at p. 73
Republished in the "Special Preface" to Six Easy Pieces (1995), p. xx.

“The fact that you are not sure means that it is possible that there is another way someday.”

Richard Feynman buch The Meaning of It All

lecture II: "The Uncertainty of Values"
The Meaning of It All (1999)

“Shut up and calculate!”

Probably a misattribution which instead originated with David Mermin; in "Could Feynman Have Said This?" http://scitation.aip.org/journals/doc/PHTOAD-ft/vol_57/iss_5/10_1.shtml?bypassSSO=1, by N. David Mermin, in Physics Today (May 2004), p. 10, he notes that in an earlier Physics Today (April 1989), p. 9, he had written what appears to be the earliest occurrence of the phrase:
If I were forced to sum up in one sentence what the Copenhagen interpretation says to me, it would be "Shut up and calculate!"
Disputed and/or attributed

“Principles
You can't say A is made of B
or vice versa.
All mass is interaction.”

note (c. 1948), quoted in Genius: The Life and Science of Richard Feynman (1992) by James Gleick, p. 5 (repeated p. 283)

“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.”

Richard Feynman buch QED: The Strange Theory of Light and Matter

Quelle: QED: The Strange Theory of Light and Matter (1985), p. 14

“I don't know anything, but I do know that everything is interesting if you go into it deeply enough.”

Richard Feynman buch The Pleasure of Finding Things Out

From Omni interview, "The Smartest Man in the World" (1979) p. 203
The Pleasure of Finding Things Out (1999)

“Nature's imagination far surpasses our own.”

Richard Feynman buch The Character of Physical Law

Quelle: The Character of Physical Law (1965), chapter 7, “Seeking New Laws,” p. 162: video http://www.youtube.com/watch?v=-2NnquxdWFk&t=29m20s

“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!”

Part 1: "From Rockaway to MIT", "Who Stole the Door?", p. 36-37
Surely You're Joking, Mr. Feynman! (1985)

“There is one feature I notice that is generally missing in cargo cult science. … It's a kind of scientific integrity, a principle of scientific thought that corresponds to a kind of utter honesty — a kind of leaning over backwards. For example, if you're doing an experiment, you should report everything that you think might make it invalid — not only what you think is right about it; other causes that could possibly explain your results; and things you thought of that you've eliminated by some other experiment, and how they worked — to make sure the other fellow can tell they have been eliminated. Details that could throw doubt on your interpretation must be given, if you know them. You must do the best you can — if you know anything at all wrong, or possibly wrong — to explain it. If you make a theory, for example, and advertise it, or put it out, then you must also put down all the facts that disagree with it, as well as those that agree with it. There is also a more subtle problem. When you have put a lot of ideas together to make an elaborate theory, you want to make sure, when explaining what it fits, that those things it fits are not just the things that gave you the idea for the theory; but that the finished theory makes something else come out right, in addition. In summary, the idea is to try to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgement in one particular direction or another.”

" Cargo Cult Science http://calteches.library.caltech.edu/51/2/CargoCult.htm", adapted from a 1974 Caltech commencement address; also published in Surely You're Joking, Mr. Feynman!, p. 341

“Our imagination is stretched to the utmost, not, as in fiction, to imagine things which are not really there, but just to comprehend those things which are there.”

Richard Feynman buch The Character of Physical Law

Quelle: The Character of Physical Law (1965), chapter 6, “Probability and Uncertainty — the Quantum Mechanical View of Nature,” p. 127-128

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