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Frases de Enrico Fermi

Enrico Fermi foi um físico italiano naturalizado estadunidense. Destacou-se pelo seu trabalho sobre o desenvolvimento do primeiro reator nuclear, e pela sua contribuição ao desenvolvimento da teoria quântica, física nuclear e de partículas, e mecânica estatística. Doutorou-se na Universidade de Pisa e recebeu o Prémio Nobel de Física em 1938.

Foi um dos poucos físicos da era moderna a combinar a teoria com a experiência. Após alguns anos na Alemanha, regressou à Universidade de Roma, onde, em 1926, dedicou-se à mecânica estatística de partículas que obedecem ao princípio de exclusão de Pauli, como os electrões. O resultado é a chamada estatística de Fermi-Dirac, uma vez que Dirac chegou independentemente às mesmas conclusões. Em 1933 Fermi introduziu o conceito de interação fraca, que em conjunto com o recém postulado neutrino, entrariam na teoria do decaimento beta. Juntamente com um grupo de colaboradores, Fermi começou uma série de experiências nas quais foram produzidos artificialmente núcleos radioativos, pelo bombardeamento com neutrões de vários elementos. Alguns dos seus resultados sugeriram a formação de elementos transuranianos. De facto, o que eles observaram, e que mais tarde foi comprovado por Otto Hahn, foi a fissão nuclear, feito que, em 1938, lhe rendeu o Prêmio Nobel de Física. Foi então para os Estados Unidos, onde viria a participar no projeto Manhattan. Dirigiu o projecto de construção do primeiro reator nuclear na Universidade de Chicago. Depois da Segunda Guerra Mundial, Fermi dedicou-se à Física de partículas, a que deu contribuições importantes. O elemento químico de número atômico 100, criado sinteticamente em 1952, recebeu o nome de Férmio em sua honra. Wikipedia  

✵ 29. Setembro 1901 – 28. Novembro 1954
Enrico Fermi photo
Enrico Fermi: 10   citações 0   Curtidas

Enrico Fermi frases e citações

“Então cadê os outros?”

Enrico Fermi

em 1950, ao contestar a idéia que poderiam existir inúmeras formas de vida alienígenas espalhadas pela galáxia.
citado em "Where are They? Maybe we are alone in the galaxy after all" by Ian Crawford in Scientific American (Julho de 2000), p. 38-43 (PDF document) http://www.cc.nctu.edu.tw/~tseng327/nctu-origin/article/sc200007a.pdf; veja também "Our Galaxy Should Be Teeming With Civilizations, But Where Are They?" by Seth Shostak at Space.com (25 de outubro de 2001) http://web.archive.org/web/20011107185016/http://www.space.com/searchforlife/shostak_paradox_011024.html

Enrico Fermi: Frases em inglês

“There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.”

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Enrico Fermi

As quoted in Nuclear Principles in Engineering (2005) by Tatjana Jevremovic, p. 397

“Before I came here, I was confused about this subject. Having listened to your lecture, I am still confused -- but on a higher level.”

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Enrico Fermi

“I cannot think of a single one, not even intelligence.”

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Enrico Fermi

When asked what characteristics Nobel prize winning physicists had in common. As quoted in Physics Today (October 1994), p. 70.

“The fact that no limits exist to the destructiveness of this weapon makes its very existence and the knowledge of its construction a danger to humanity as a whole. It is necessarily an evil thing considered in any light.”

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Enrico Fermi

On the Hydrogen bomb in a minority addendum http://honors.umd.edu/HONR269J/archive/GACReport491030.html (co-authored with I. I. Rabi) to an official General Advisory Committee report for the Atomic Energy Commission (30 October 1949)
Contexto: Such a weapon goes far beyond any military objective and enters the range of very great natural catastrophes. By its very nature it cannot be confined to a military objective but becomes a weapon which in practical effect is almost one of genocide. It is clear that the use of such a weapon cannot be justified on any ethical ground which gives a human being a certain individuality and dignity even if he happens to be a resident of an enemy country... The fact that no limits exist to the destructiveness of this weapon makes its very existence and the knowledge of its construction a danger to humanity as a whole. It is necessarily an evil thing considered in any light.

“Such a weapon goes far beyond any military objective and enters the range of very great natural catastrophes. By its very nature it cannot be confined to a military objective but becomes a weapon which in practical effect is almost one of genocide.”

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Enrico Fermi

On the Hydrogen bomb in a minority addendum http://honors.umd.edu/HONR269J/archive/GACReport491030.html (co-authored with I. I. Rabi) to an official General Advisory Committee report for the Atomic Energy Commission (30 October 1949)
Contexto: Such a weapon goes far beyond any military objective and enters the range of very great natural catastrophes. By its very nature it cannot be confined to a military objective but becomes a weapon which in practical effect is almost one of genocide. It is clear that the use of such a weapon cannot be justified on any ethical ground which gives a human being a certain individuality and dignity even if he happens to be a resident of an enemy country... The fact that no limits exist to the destructiveness of this weapon makes its very existence and the knowledge of its construction a danger to humanity as a whole. It is necessarily an evil thing considered in any light.

“If I could remember the names of all these particles, I'd be a botanist.”

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Enrico Fermi

As quoted in Hyperspace (1995) by Michio Kaku

“I hope it won't take long.”

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Enrico Fermi

Comment to Eugene Wigner, ten days before his death from cancer, as quoted in The collected works of Eugene Paul Wigner (1992), p. 108

“Although the problem of transmuting chemical elements into each other is much older than a satisfactory definition of the very concept of chemical element, it is well known that the first and most important step towards its solution was made only nineteen years ago by the late Lord Rutherford, who started the method of the nuclear bombardments.”

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Enrico Fermi

Nobel lecture (12 December 1938)

“Such a weapon goes far beyond any military objective and enters the range of very great natural catastrophes. By its very nature it cannot be confined to a military objective but becomes a weapon which in practical effect is almost one of genocide. It is clear that the use of such a weapon cannot be justified on any ethical ground which gives a human being a certain individuality and dignity even if he happens to be a resident of an enemy country... The fact that no limits exist to the destructiveness of this weapon makes its very existence and the knowledge of its construction a danger to humanity as a whole. It is necessarily an evil thing considered in any light.”

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Enrico Fermi

On the Hydrogen bomb in a minority annex http://web.archive.org/web/20080725010150/honors.umd.edu/HONR269J/archive/GACReport491030.html (co-authored with I. I. Rabi) to an official General Advisory Committee report for the Atomic Energy Commission (30 October 1949)