Frasi di Pierre-Gilles de Gennes

Pierre-Gilles de Gennes è stato un fisico francese.

Scienziato eclettico, ha compiuto importanti studi in molti campi fra cui i superconduttori, i cristalli liquidi e i polimeri.

Nel 1991 è stato insignito del Premio Nobel per la fisica.

Morì nel 2007 e venne sepolto nel Cimitero di Montrouge. Wikipedia  

✵ 24. Ottobre 1932 – 18. Maggio 2007
Pierre-Gilles de Gennes: 5   frasi 0   Mi piace

Pierre-Gilles de Gennes: Frasi in inglese

“Benjamin Franklin performed a beautiful experiment using surfactants”

"Soft Matter" Nobel lecture (9 December 1991) - full text in PDF format http://nobelprize.org/nobel_prizes/physics/laureates/1991/gennes-lecture.html
Contesto: Benjamin Franklin performed a beautiful experiment using surfactants; on a pond at Clapham Common, he poured a small amount of oleic acid, a natural surfactant which tends to form a dense film at the water-air interface. He measured the volume required to cover all the pond. Knowing the area, he then knew the height of the film, something like three nanometers in our current units. This was to my knowledge the first measurement of the size of molecules. In our days, when we are spoilt with exceedingly complex toys, such as nuclear reactors or synchrotron sources, I particularly like to describe experiments of this Franklin style to my students.
Surfactants allow us to protect a water surface, and to generate these beautiful soap bubbles, which are the delight of our children.

“In our days, when we are spoilt with exceedingly complex toys, such as nuclear reactors or synchrotron sources, I particularly like to describe experiments of this Franklin style to my students.”

"Soft Matter" Nobel lecture (9 December 1991) - full text in PDF format http://nobelprize.org/nobel_prizes/physics/laureates/1991/gennes-lecture.html
Contesto: Benjamin Franklin performed a beautiful experiment using surfactants; on a pond at Clapham Common, he poured a small amount of oleic acid, a natural surfactant which tends to form a dense film at the water-air interface. He measured the volume required to cover all the pond. Knowing the area, he then knew the height of the film, something like three nanometers in our current units. This was to my knowledge the first measurement of the size of molecules. In our days, when we are spoilt with exceedingly complex toys, such as nuclear reactors or synchrotron sources, I particularly like to describe experiments of this Franklin style to my students.
Surfactants allow us to protect a water surface, and to generate these beautiful soap bubbles, which are the delight of our children.

“The real point of honor [for a scientist] is not to be always right. It is to dare to propose new ideas, and then to check them.”

Le vrai point d'honneur [d'un scientifique] n'est pas d'être toujours dans le vrai. Il est d'oser, de proposer des idées neuves, et ensuite de les vérifier.
As quoted in La Science des Rêves, Science et Vie Junior, 214, (18 May 2007), p. 13

Autori simili

Georges Charpak photo
Georges Charpak 2
fisico polacco
Louis-Victor Pierre Raymond de Broglie photo
Louis-Victor Pierre Raymond de Broglie 8
matematico e fisico francese
Max Planck photo
Max Planck 11
fisico tedesco
Werner Karl Heisenberg photo
Werner Karl Heisenberg 4
fisico tedesco
Peter Higgs photo
Peter Higgs 1
fisico britannico
Marie Curie photo
Marie Curie 8
chimica e fisica polacca naturalizzata russa e in seguito f…
Steven Weinberg photo
Steven Weinberg 6
fisico statunitense
Carlo Rubbia photo
Carlo Rubbia 18
fisico italiano
Niels Bohr photo
Niels Bohr 8
fisico e matematico danese
Paul Dirac photo
Paul Dirac 3
fisico e matematico britannico