A Brief History of TimeRandom House Publishing Group, 2011 M05 4 - 224 páginas #1 NEW YORK TIMES BESTSELLER A landmark volume in science writing by one of the great minds of our time, Stephen Hawking’s book explores such profound questions as: How did the universe begin—and what made its start possible? Does time always flow forward? Is the universe unending—or are there boundaries? Are there other dimensions in space? What will happen when it all ends? Told in language we all can understand, A Brief History of Time plunges into the exotic realms of black holes and quarks, of antimatter and “arrows of time,” of the big bang and a bigger God—where the possibilities are wondrous and unexpected. With exciting images and profound imagination, Stephen Hawking brings us closer to the ultimate secrets at the very heart of creation. |
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Página 19
... waves ( the distance between one wave crest and the next ) is a meter or more , they are what we now call radio waves . Shorter wavelengths are known as microwaves ( a few centime- ters ) or infrared ( more than a ten - thousandth of a ...
... waves ( the distance between one wave crest and the next ) is a meter or more , they are what we now call radio waves . Shorter wavelengths are known as microwaves ( a few centime- ters ) or infrared ( more than a ten - thousandth of a ...
Página 20
... waves should travel through the ether as sound waves travel through air , and their speed should therefore be relative to the ether . Different ob- servers , moving relative to the ether , would see light coming toward them at different ...
... waves should travel through the ether as sound waves travel through air , and their speed should therefore be relative to the ether . Different ob- servers , moving relative to the ether , would see light coming toward them at different ...
Página 21
... waves that have no intrinsic mass , can move at the speed of light . An equally remarkable consequence of relativity is the way it has revolutionized our ideas of space and time . In Newton's theory , if a pulse of light is sent from ...
... waves that have no intrinsic mass , can move at the speed of light . An equally remarkable consequence of relativity is the way it has revolutionized our ideas of space and time . In Newton's theory , if a pulse of light is sent from ...
Página 22
... waves . Part of the pulse is reflected back at the event and the observer measures the time at which he receives the echo . The time of the event is then said to be the time halfway between when the pulse was sent and the time when the ...
... waves . Part of the pulse is reflected back at the event and the observer measures the time at which he receives the echo . The time of the event is then said to be the time halfway between when the pulse was sent and the time when the ...
Página 27
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Otras ediciones - Ver todas
A Brief History of Time: From the Big Bang to Black Holes Stephen Hawking,Carl Sagan Vista de fragmentos - 1990 |
A Brief History of Time: From the Big Bang to Black Holes Stephen Hawking,Carl Sagan Vista de fragmentos - 1988 |
Términos y frases comunes
anthropic principle antiparticles antiquarks astronaut atoms big bang big bang singularity body boundary condition called collide complete unified theory described dimensions direction disorder distance early universe earth effect Einstein electromagnetic electrons emitted entropy event horizon exist finite force-carrying particles Friedmann galaxies Galileo gamma rays gravitational attraction gravitational field gravitational force happens idea imaginary increase infinite initial large number laws of science light cone light rays mass matter particles measure microwave million million million moving neutron star Newton nucleus observe orbits partial theories paths physicist planets position possible predicted primordial black holes protons and neutrons quantum mechanics quantum theory quarks radiation recollapse regions rotating scientist space space-time spaceship speed of light string theory sum over histories surface symmetry temperature theory of gravity theory of relativity thermodynamic arrow thousand million uncertainty principle universe expands velocity virtual particles wavelength wormhole zero