Stephen Hawking · 176 pages
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“What you have told us is rubbish. The world is really a flat plate supported on the back of a giant tortoise.”
― Stephen Hawking, quote from A Briefer History of Time
“It's the gravity that shapes the large scale structure of the universe, even though it is the weakest of four categories of forces.”
― Stephen Hawking, quote from A Briefer History of Time
“Intelligence is the ability to adapt to change.
Stephen Hawking”
― Stephen Hawking, quote from A Briefer History of Time
“The uncertainty principle signaled an end to Laplace's dream of a theory of science, a model of the universe that would be completely deterministic. We certainly cannot predict future events exactly if we cannot even measure the present state of the universe precisely!
We could still imagine that there is a set of laws that determine events completely for some supernatural being who, unlike us, could observe the present state of the universe without disturbing it. However, such models of the universe are not of much interest to us ordinary mortals. It seems better to employ the principle of economy known as Occam's razor and cut out all the features of the theory that cannot be observed.”
― Stephen Hawking, quote from A Briefer History of Time
“If a star were a grain of salt, you could fit all the stars visible to the naked eye on a teaspoon, but all the stars in the universe would fill a ball more than eight miles wide.”
― Stephen Hawking, quote from A Briefer History of Time
“Yet if there really were a complete unified theory, it would also presumably determine our actions—so the theory itself would determine the outcome of our search for it! And why should it determine that we come to the right conclusions from the evidence? Might it not equally well determine that we draw the wrong conclusion? Or no conclusion at all?”
― Stephen Hawking, quote from A Briefer History of Time
“an elipse is an elongated circle”
― Stephen Hawking, quote from A Briefer History of Time
“El siglo XX también vio nacer otra gran teoría parcial de la naturaleza: la mecánica cuántica. Esta teoría trata los fenómenos que se producen a escalas muy pequeñas. Nuestra concepción del big bang nos indica que debió de haber un momento en que el universo muy primitivo era tan pequeño que, incluso al estudiar su estructura «a gran escala», no es posible ignorar los efectos de pequeña escala de la mecánica cuántica.
Nuestra mayor esperanza de obtener una comprensión completa del universo desde su principio hasta su final implica combinar estas dos teorías parciales en una sola teoría cuántica de la gravedad. [...] Cuando se combina la relatividad general con el principio de incertidumbre de la mecánica cuántica surge la posibilidad de que tanto el espacio como el tiempo sean finitos, pero sin tener bordes ni fronteras. Y es posible que las leyes ordinarias de la ciencia se cumplan en todos los sitios, incluida la región inicial del tiempo, sin necesidad de que haya en ella singularidad alguna.”
― Stephen Hawking, quote from A Briefer History of Time
“Por lo tanto, la mecánica cuántica introduce en la ciencia un elemento inevitable de impredecibilidad o aleatoriedad. Einstein se opuso rotundamente a ello, a pesar del importante papel que había desempeñando en el desarrollo de estas ideas. [...]
La prueba de una teoría científica es su capacidad de predecir los resultados de un experimento. La teoría cuántica limita nuestras posibilidades. ¿Limita la teoría cuántica la ciencia? Para progresar, la manera en que hacemos ciencia debe ser dictada por la naturaleza. En este caso, la naturaleza exige que redefinamos lo que entendemos por predicción: quizá no podamos predecir exactamente el resultado de un experimento, pero podemos repetirlo muchas vces y confirmar que los diversos resultado posibles ocurren con las probabilidades predichas por la teoría cuántica. Así, a pesar del primer principio de incertidumbre, no es necesario abandonar la creencia en un mundo regido por leyes físicas.”
― Stephen Hawking, quote from A Briefer History of Time
“If we do discover a complete theory, it should in time be understandable in broad principle by everyone, not just a few scientists. Then we shall all, philosophers, scientists, and just ordinary people, be able to take part in the discussion of the question of why it is that we and the universe exist. If we find the answer to that, it would be the ultimate triumph of human reason—for then we would know the mind of God.”
― Stephen Hawking, quote from A Briefer History of Time
“Dios no solo juega a los dados, a veces los tira donde no se pueden ver.”
― Stephen Hawking, quote from A Briefer History of Time
“(Alexander) Friedmann sólo dedujo un modelo de universo, pero, si sus suposiciones son correctas, hay en realidad tres posibles tipos de soluciones de las ecuaciones de Einstein, es decir, tres diferentes tipos de modelos de Friedmann, y tres diferentes comportamientos del universo.
1. En el primer tipo de solución (el que descubrió Friedmann) el universo se expande con suficiente lentitud como para que la atracción gravitatoria entre las galaxias vaya frenando la expansión hasta llegar a detenerla, tras lo cual las galaxias empiezan a aproximarse las unas a las otras y el universo se contrae.
2. En el segundo tipo de solución, el universo se expande tan rápidamente que la atracción gravitatoria no puede llegar a frenarlo nunca, aunque sí va reduciendo su ritmo de expansión.
3. Finalmente, en un tercer tipo de solución, el universo se expande con el ritmo justo para impedir que se vuelva a colapsar. La velocidad con que las galaxias se separan va disminuyendo progresivamente, pero nunca llega a alcanzar el valor cero.
[...]
Otras observaciones recientes indican que la expansión del universo en realidad no se está frenando, sino que se está acelerando.”
― Stephen Hawking, quote from A Briefer History of Time
Stephen Hawking
Born place: in Oxford, The United Kingdom
Born date January 8, 1942
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“She needed to understand her pain and why it had brought her here.”
― Holly Bourne, quote from The Manifesto on How to be Interesting
“I designed this and had it made especially for you. The trefoil is the symbol of immortality: a beginning without an end, like our life together. The hearts represent my love for you. Forever love. Unending like the knot they form. I chose opals instead of diamonds, because opals are warm living stones, each color a birth stone, yours being the center of this ring just like you are the center of our family. “I know the inscription isn’t original, but the meaning behind the words is. I wrote those words for the wife I dreamed of. And here you are. With My Last Breath.”
― Julieanne Reeves, quote from Razing Kayne
“Jeffers stretched up on his toes to see the back of the mob, “But James, we’re doing all this for you... We need this gold to build a united Alba. We need it to fund an army and to forge decisive leadership.” His voice was almost plaintive. “We want to hand your generation a real empire rather than just a loose collection of competing Families. We want to give you the foundations to achieve glory! What could possibly be wrong with that?”
“Rubbish!” cried Tristan, not about to let honey-coated nonsense dissolve the glue that bound his army. “Absolute codswallop!” he let his calm facade slip for the first time that day. “What you’re actually trying to do is to build a legacy that you don’t deserve! You want to swan around as an armchair General for the next twenty years while your precious army strives and dies for hollow victories that do nothing more than feed your ego! And do you know who strives and dies in this picture?” He waved one arm at the figures behind him. “We do! We here in this alley, along with other young men and women just like us!”
Tristan watched Jeffers from the corner of his eye, as he shook his fist towards deGroot, “Well we’re not having it! If you want us to fight and die, then we’re going to fight now, and we’re going to fight you! So come on down deGroot and take a swing!”
― Aaron D'Este, quote from Weapon of Choice
“I watched him spread out his arms with a smile before he crashed through the table in a beautiful crescendo, the glass sounding like tinkles from a piano as its shavings glittered across the floor and sliced through his face and body.”
― Lee Matthew Goldberg, quote from Slow Down
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