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Born in England, the son of a geneticist, Roger Penrose received a Ph.D. in 1957 from Cambridge University. Penrose then became a professor of applied mathematics at Birkbeck College in 1966 and a Rouse Ball Professor of Mathematics at Oxford University in 1973. Penrose, a mathematician and visa mer theoretical physicist, has done much to elucidate the fundamental properties of black holes. With Stephen Hawking, Penrose proved a theorem of Albert Einstein's general relativity, asserting that at the center of a black hole there must evolve a "space-time singularity" of zero volume and infinite density, in which the current laws of physics do not apply. He also proposed the hypothesis of "cosmic censorship," which claims that such singularities must possess an event horizon. In 1969 Penrose described a process for the extraction of energy from a black hole, as well as how rotational energy of the black hole is transferred to a particle outside the hole. In addition, Penrose has done much to develop the mathematics needed to unite general relativity, which deals with the gravitational interactions of matter, and quantum mechanics, which describes all other interactions. (Bowker Author Biography) visa färre
Foto taget av: Roger Penrose at Festival della Scienza Oct 29 2011


Verk av Roger Penrose

Shadows of the Mind (1994) 907 exemplar
The Nature of Space and Time (1996) 692 exemplar
Quantum Physics of Consciousness (2011) — Bidragsgivare — 15 exemplar
Oxford en Cambridge (1950) 11 exemplar

Associerade verk

What Is Life? : With Mind and Matter and Autobiographical Sketches (1992) — Förord, vissa utgåvor815 exemplar
The Oxford Book of Modern Science Writing (2008) — Bidragsgivare — 791 exemplar
Six Easy Pieces and Six Not-So-Easy Pieces (1963) — Inledning, vissa utgåvor385 exemplar
White Mars (1999) 198 exemplar
Explaining Consciousness: The Hard Problem (1997) — Bidragsgivare — 81 exemplar
'Nature and the Greeks' and 'Science and Humanism' (Canto original series) (1996) — Förord, vissa utgåvor80 exemplar
The Nature of Time (1986) — Bidragsgivare — 40 exemplar
Coffee with Einstein (Coffee with...Series) (2008) — Förord — 33 exemplar


Allmänna fakta



I managed to understand (mostly) approximately the first half of the book, but couldn't keep up when Penrose dipped into conformal space-time diagrams. I really liked the opening discussion on entropy and the explanation that early entropy was very special. In a sense the entropy was very low, which is why it can keep increasing, but also that as the universe was very hot at first that the entropy was as high as it could be. Only recommended for students of general relativity and cosmology!
jvgravy | 11 andra recensioner | Nov 23, 2023 |
A giant book of physics, which might have been revealing if I had spent a great deal of time with it.
mykl-s | 31 andra recensioner | Aug 9, 2023 |
I am very intrigued by physicist attempts to explain the fundamental structures of time and space, but unfortunately in this case, I feel compelled to give up. I think I need someone to explain Roger’s thinking for me to gain much from it. There is a reliance on formulas and jargon that become increasingly confusing as I proceed, and I simply feel that it could be mind blowing if only I could make sense of it. Oh well! There are many other physics writers to try.
itheodore | 11 andra recensioner | May 29, 2023 |
Tough going - but great where i know at least something about what he is describing.
Reality - revealed - not yet. Despite my degree in physics, much lays tantalising beyond me.
hchatfield | 31 andra recensioner | Feb 1, 2023 |



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