Zitate von Richard Feynman

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Richard Feynman

Geburtstag: 11. Mai 1918
Todesdatum: 15. Februar 1988
Andere Namen:Richard Feynman Philips, Richard Phillips Feynman, Ричард Филлипс Фейнман

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Richard Phillips Feynman [ˈfaɪnmən] war ein 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. Seine charismatische Art 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.

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Zitate Richard Feynman

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

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

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

—  Richard Feynman
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.

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„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.“

—  Richard Feynman
Vorlesungen über Physik, Band I, Kap. 4.1 (Übersetzung: Heinz Köhler), Seite 46, Oldenbourg München Wien, 5. Aufl. 2007 Google Books

„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.“

—  Richard Feynman
Context: Now we have a problem. 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. This doesn't happen in mathematics, that the theorems come out in places where they're not supposed to be! chapter 2, “ The Relation of Mathematics to Physics http://www.youtube.com/watch?v=M9ZYEb0Vf8U” referring to the law of conservation of angular momentum

„I too can see the stars on a desert night, and feel them. But do I see less or more? The vastness of the heavens stretches my imagination — stuck on this carousel my little eye can catch one-million-year-old light. A vast pattern — of which I am a part… What is the pattern, or the meaning, or the why? It does not do harm to the mystery to know a little about it. For far more marvelous is the truth than any artists of the past imagined! Why do the poets of the present not speak of it? What men are poets who can speak of Jupiter if he were a man, but if he is an immense spinning sphere of methane and ammonia must be silent?“

—  Richard Feynman
Context: Poets say science takes away from the beauty of the stars — mere globs of gas atoms. Nothing is "mere". I too can see the stars on a desert night, and feel them. But do I see less or more? The vastness of the heavens stretches my imagination — stuck on this carousel my little eye can catch one-million-year-old light. A vast pattern — of which I am a part... What is the pattern, or the meaning, or the why? It does not do harm to the mystery to know a little about it. For far more marvelous is the truth than any artists of the past imagined! Why do the poets of the present not speak of it? What men are poets who can speak of Jupiter if he were a man, but if he is an immense spinning sphere of methane and ammonia must be silent? volume I; lecture 3, "The Relation of Physics to Other Sciences"; section 3-4, "Astronomy"; p. 3-6

„Why should we care about Feynman? What was so special about him? Why did he become a public icon, standing with Albert Einstein and Stephen Hawking as the Holy Trinity of twentieth-century physics?“

—  Richard Feynman
Context: Why should we care about Feynman? What was so special about him? Why did he become a public icon, standing with Albert Einstein and Stephen Hawking as the Holy Trinity of twentieth-century physics? The public has demonstrated remarkably good taste in choosing its icons. All three of them are genuinely great scientists, with flashes of true genius as well as solid accomplishments to their credit. But to become an icon, it is not enough to be a great scientist. There are many other scientists, not so great as Einstein but greater than Hawking and Feynman, who did not become icons.... Scientists who become icons must not only be geniuses but also performers, playing to the crowd and enjoying public acclaim. Einstein and Feynman both grumbled about the newspaper and radio reporters who invaded their privacy, but both gave the reporters what the public wanted, sharp and witty remarks that would make good headlines. Hawking in his unique way also enjoys the public adulation that his triumph over physical obstacles has earned for him. I will never forget the joyful morning in Tokyo when Hawking went on a tour of the streets in his wheelchair and the Japanese crowds streamed after him, stretching out their hands to touch his chair. Einstein, Hawking, and Feynman shared an ability to break through the barriers that separated them from ordinary people. The public responded to them because they were regular guys, jokers as well as geniuses. The third quality that is needed for a scientist to become a public icon is wisdom. Besides being a famous joker and a famous genius, Feynman was also a wise human being whose answers to serious questions made sense. To me and to hundreds of other students who came to him for advice, he spoke truth. Like Einstein and Hawking, he had come through times of great suffering, nursing Arline through her illness and watching her die, and emerged stronger. Behind his enormous zest and enjoyment of life was an awareness of tragedy, a knowledge that our time on earth is short and precarious. The public made him into an icon because he was not only a great scientist and a great clown but also a great human being and a guide in time of trouble. Other Feynman books have portrayed him as a scientific wizard and as a storyteller. This collection of letters shows us for the first time the son caring for his father and mother, the father caring for his wife and children, the teacher caring for his students, the writer replying to people throughout the world who wrote to him about their problems and received his full and undivided attention. Freeman Dyson, in "Wise Man" http://www.nybooks.com/articles/18350, The New York Review of Books (20 October 2005)

„It is important to realize that in physics today, we have no knowledge what energy is.“

—  Richard Feynman
Context: It is important to realize that in physics today, we have no knowledge what energy is. We do not have a picture that energy comes in little blobs of a definite amount. It is not that way. volume I; lecture 4, "Conservation of Energy"; section 4-1, "What is energy?"; p. 4-2

„The scientist has a lot of experience with ignorance and doubt and uncertainty, and this experience is of very great importance, I think.“

—  Richard Feynman
Context: The scientist has a lot of experience with ignorance and doubt and uncertainty, and this experience is of very great importance, I think. When a scientist doesn’t know the answer to a problem, he is ignorant. When he has a hunch as to what the result is, he is uncertain. And when he is pretty darn sure of what the result is going to be, he is still in some doubt. We have found it of paramount importance that in order to progress we must recognize our ignorance and leave room for doubt. Scientific knowledge is a body of statements of varying degrees of certainty — some most unsure, some nearly sure, but none absolutely certain. Now, we scientists are used to this, and we take it for granted that it is perfectly consistent to be unsure, that it is possible to live and not know. But I don’t know whether everyone realizes this is true. Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question — to doubt — to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.

„Do you seriously entertain the idea that without the observer there is no reality?“

—  Richard Feynman
Context: This is all very confusing, especially when we consider that even though we may consistently consider ourselves to be the outside observer when we look at the rest of the world, the rest of the world is at the same time observing us, and that often we agree on what we see in each other. Does this then mean that my observations become real only when I observe an observer observing something as it happens? This is a horrible viewpoint. Do you seriously entertain the idea that without the observer there is no reality? Which observer? Any observer? Is a fly an observer? Is a star an observer? Was there no reality in the universe before 109 B. C. when life began? Or are you the observer? Then there is no reality to the world after you are dead? I know a number of otherwise respectable physicists who have bought life insurance. "On the Philosophical Problems in Quantizing Macroscopic Objects"(ca. 1962-1963) as quoted by Morinigo, Wagner, & Hatfield, Feynman Lectures on Gravitation (2002)

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„Let us make recommendations to ensure that NASA officials deal in a world of reality in understanding technological weaknesses and imperfections well enough to be actively trying to eliminate them.“

—  Richard Feynman
Context: Let us make recommendations to ensure that NASA officials deal in a world of reality in understanding technological weaknesses and imperfections well enough to be actively trying to eliminate them. They must live in reality in comparing the costs and utility of the Shuttle to other methods of entering space. And they must be realistic in making contracts, in estimating costs, and the difficulty of the projects. Only realistic flight schedules should be proposed, schedules that have a reasonable chance of being met. If in this way the government would not support them, then so be it. NASA owes it to the citizens from whom it asks support to be frank, honest, and informative, so that these citizens can make the wisest decisions for the use of their limited resources. For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.

„Have no respect whatsoever for authority; forget who said it and instead look what he starts with, where he ends up, and ask yourself, "Is it reasonable?"“

—  Richard Feynman
Context: Doubting the great Descartes … was a reaction I learned from my father: Have no respect whatsoever for authority; forget who said it and instead look what he starts with, where he ends up, and ask yourself, "Is it reasonable?" "What Do You Care What Other People Think?", p. 28-29

„Mathematics is not just a language. Mathematics is a language plus reasoning.“

—  Richard Feynman
Context: Mathematics is not just a language. Mathematics is a language plus reasoning. It's like a language plus logic. Mathematics is a tool for reasoning. It's, in fact, a big collection of the results of some person's careful thought and reasoning. By mathematics, it is possible to connect one statement to another. chapter 2, “The Relation of Mathematics to Physics”

„It is not unscientific to make a guess, although many people who are not in science think it is.“

—  Richard Feynman
Context: It is not unscientific to make a guess, although many people who are not in science think it is. Some years ago I had a conversation with a layman about flying saucers — because I am scientific I know all about flying saucers! I said “I don’t think there are flying saucers”. So my antagonist said, “Is it impossible that there are flying saucers? Can you prove that it’s impossible?” “No”, I said, “I can’t prove it’s impossible. It’s just very unlikely”. At that he said, “You are very unscientific. If you can’t prove it impossible then how can you say that it’s unlikely?” But that is the way that is scientific. It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible. To define what I mean, I might have said to him, "Listen, I mean that from my knowledge of the world that I see around me, I think that it is much more likely that the reports of flying saucers are the results of the known irrational characteristics of terrestrial intelligence than of the unknown rational efforts of extra-terrestrial intelligence." It is just more likely. That is all. chapter 7, “Seeking New Laws,” p. 165-166: video http://www.youtube.com/watch?v=-2NnquxdWFk&t=37m21s

„There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower. It only adds. I don't understand how it subtracts.“

—  Richard Feynman
Context: I have a friend who's an artist, and he sometimes takes a view which I don't agree with. He'll hold up a flower and say, "Look how beautiful it is," and I'll agree. But then he'll say, "I, as an artist, can see how beautiful a flower is. But you, as a scientist, take it all apart and it becomes dull." I think he's kind of nutty. … There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower. It only adds. I don't understand how it subtracts. "The Making of a Scientist," p. 11: video http://www.youtube.com/watch?v=NEwUwWh5Xs4&t=26s

„The old problems, such as the relation of science and religion, are still with us, and I believe present as difficult dilemmas as ever, but they are not often publicly discussed because of the limitations of specialization.“

—  Richard Feynman
Context: In this age of specialization men who thoroughly know one field are often incompetent to discuss another. The great problems of the relations between one and another aspect of human activity have for this reason been discussed less and less in public. When we look at the past great debates on these subjects we feel jealous of those times, for we should have liked the excitement of such argument. The old problems, such as the relation of science and religion, are still with us, and I believe present as difficult dilemmas as ever, but they are not often publicly discussed because of the limitations of specialization. remarks (2 May 1956) at a Caltech YMCA lunch forum http://calteches.library.caltech.edu/49/2/Religion.htm

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“

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