Quantum Man: Richard Feynman's Life in Science. Lawrence Krauss Talk at ...
Δημοσιεύτηκε στις 10 Φεβ 2013
Professor Lawrence Krauss presents "Quantum Man: Richard Feynman's Life in Science" at a talk at CERN, Geneva.
Lawrence
Krauss is Foundation Professor in the School of Earth and Space
Exploration and Director of the ASU Origins Project at Arizona State
University. He is the only physicist to have received the highest awards
from all 3 major US professional physics societies.
Professor Krauss has over 300 academic publications, mainly in the field of Cosmology.
His
popular science publications include The Physics of Star Trek,
Quintessence, and Atom, Quantum Man: Richard Feynman's Life in Science
and, more recently, the widely acclaimed A Universe from Nothing: Why
There Is Something Rather than Nothing, a book which is, in my opinion,
the "A Brief History of Time" of this generation of science literature.
One
of the 3 winners of the 1965 Nobel prize in Physics for his work,
Richard Feynman was an expert on quantum mechanics and developed the
Path Integral formulation of Relativistic Quantum mechanics, used in
Quantum Field Theory, he also interpreted the Born series of scattering
amplitudes as vertices and Green's functions as propagators and
incorporated these in his famous diagrams, the Feynman Diagrams
.
Feynman's
genius was quickly seen when he worked on the Manhattan Project, where
his pipelining technique of performing physics calculations could be
considered the first instance of parallel processing using human
"computers". Feynman developed nuclear weapon yield equations with
another giant of quantum physics, Hans Bethe. The Bethe-Feynman Equation
was a key component in deriving the more advanced nuclear weapon yield
equations which are still considered restricted data by the United
States Military.
Feynman also worked on the fundamental quantised
excitations in Liquid Helium leading to a correct model describing
superfluidity using phonons, maxons and rotons to describe the various
excitation curves.
Other fields of work include the Feynman-Hellmann
Theorem, which can relate the derivative of the total energy of any
system to the expectation value of the derivative of the Hamiltonian
under a single parameter, e.g volume.
He also worked on the
Rogers Commission report during the investigation of the 1986 Space
Shuttle Challenger disaster, where Feynman famously demonstrated how the
Booster Rocket O-rings, which are elastic sealing joints, became less
resilient and subject to seal failures at ice-cold temperatures by
immersing a sample of the material in a glass of ice water- his high
intelligence and independent way of looking at the world often made him
"a real pain" in the eyes of other, less skilled, Commission members.
Feynman's
own investigation reveals a disconnect between NASA's engineers and
executives that was far more striking than he expected. His interviews
of NASA's high-ranking managers revealed startling misunderstandings of
elementary concepts, such as safety procedures.
Although Feynman got
plenty of media coverage due to him being on the Commission, he was
often told to stay quiet about NASA's more sinister secrets and tactics
in space exploration.
Feynman himself was an interesting man of
science, as we shall soon see in this excellent talk,which has also been
given to the Science Network, which is available on The Science
Foundation's Channel.
Lawrence
Krauss is Foundation Professor in the School of Earth and Space
Exploration and Director of the ASU Origins Project at Arizona State
University. He is the only physicist to have received the highest awards
from all 3 major US professional physics societies.
Professor Krauss has over 300 academic publications, mainly in the field of Cosmology.
His
popular science publications include The Physics of Star Trek,
Quintessence, and Atom, Quantum Man: Richard Feynman's Life in Science
and, more recently, the widely acclaimed A Universe from Nothing: Why
There Is Something Rather than Nothing, a book which is, in my opinion,
the "A Brief History of Time" of this generation of science literature.
One
of the 3 winners of the 1965 Nobel prize in Physics for his work,
Richard Feynman was an expert on quantum mechanics and developed the
Path Integral formulation of Relativistic Quantum mechanics, used in
Quantum Field Theory, he also interpreted the Born series of scattering
amplitudes as vertices and Green's functions as propagators and
incorporated these in his famous diagrams, the Feynman Diagrams
.
Feynman's
genius was quickly seen when he worked on the Manhattan Project, where
his pipelining technique of performing physics calculations could be
considered the first instance of parallel processing using human
"computers". Feynman developed nuclear weapon yield equations with
another giant of quantum physics, Hans Bethe. The Bethe-Feynman Equation
was a key component in deriving the more advanced nuclear weapon yield
equations which are still considered restricted data by the United
States Military.
Feynman also worked on the fundamental quantised
excitations in Liquid Helium leading to a correct model describing
superfluidity using phonons, maxons and rotons to describe the various
excitation curves.
Other fields of work include the Feynman-Hellmann
Theorem, which can relate the derivative of the total energy of any
system to the expectation value of the derivative of the Hamiltonian
under a single parameter, e.g volume.
He also worked on the
Rogers Commission report during the investigation of the 1986 Space
Shuttle Challenger disaster, where Feynman famously demonstrated how the
Booster Rocket O-rings, which are elastic sealing joints, became less
resilient and subject to seal failures at ice-cold temperatures by
immersing a sample of the material in a glass of ice water- his high
intelligence and independent way of looking at the world often made him
"a real pain" in the eyes of other, less skilled, Commission members.
Feynman's
own investigation reveals a disconnect between NASA's engineers and
executives that was far more striking than he expected. His interviews
of NASA's high-ranking managers revealed startling misunderstandings of
elementary concepts, such as safety procedures.
Although Feynman got
plenty of media coverage due to him being on the Commission, he was
often told to stay quiet about NASA's more sinister secrets and tactics
in space exploration.
Feynman himself was an interesting man of
science, as we shall soon see in this excellent talk,which has also been
given to the Science Network, which is available on The Science
Foundation's Channel.
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