0_Wizard
Stephen Hawking was so brilliant. He was a theoretical physicist and cosmologist
Stephen William Hawking, ( born 8 January 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge.
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Stephen Hawking
chosen_topic_0_Stephen_Hawking
Stephen Hawking
Stephen William Hawking, ( born 8 January 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He is a vigorous supporter of the many-worlds interpretation of quantum mechanics.
They Saved Lisa's Brain
"They Saved Lisa's Brain" is the twenty-second episode of "The Simpsons" tenth season. It first aired on the Fox network in the United States on May 9, 1999. In the episode, after writing a thoughtful letter to the "Springfield Shopper", Lisa is invited to join the Springfield chapter of Mensa. When Mayor Quimby later flees Springfield, the group takes control of the town, hoping to improve the lives of Springfieldians through the rule of the smartest. Meanwhile, Homer poses for a series of erotic photos. "They Saved Lisa's Brain" was directed by Pete Michels and written by Matt Selman, although the idea for the episode was pitched by former staff writer George Meyer.
Starmus Festival
The Starmus International Festival is an international gathering focused on celebrating astronomy, space exploration, music, art, and allied sciences such as biology and chemistry. It was founded by Garik Israelian, an astronomer at the Institute for Astrophysics in Tenerife, Canary Islands, Spain. The Festival has featured Buzz Aldrin, Neil Armstrong, Richard Dawkins, Stephen Hawking, Alexei Leonov, Jim Lovell, Brian May, Jill Tarter, Kip Thorne, and Rick Wakeman among others. In 2007 Brian May, founding guitarist of the rock band Queen, completed his PhD dissertation, which was left unfinished in 1974 when Queen began to achieve significant success.
The Grand Design (book)
The Grand Design is a popular-science book written by physicists Stephen Hawking and Leonard Mlodinow and published by Bantam Books in 2010. The book examines the history of scientific knowledge about the universe and explains 11 dimension M-theory. The authors of the book point out that a Unified Field Theory (a theory, based on an early model of the universe, proposed by Albert Einstein and other physicists) may not exist. It argues that invoking God is not necessary to explain the origins of the universe, and that the Big Bang is a consequence of the laws of physics alone. In response to criticism, Hawking has said; "One can't prove that God doesn't exist, but science makes God unnecessary."
The Theory of Everything (2014 film)
The Theory of Everything is a 2014 British biographical romantic drama film directed by James Marsh, and adapted by Anthony McCarten from the memoir "Travelling to Infinity: My Life with Stephen" by Jane Hawking, which deals with her relationship with her ex-husband, theoretical physicist Stephen Hawking, his diagnosis of amyotrophic lateral sclerosis (ALS, also known as Lou Gehrig's disease or motor neurone disease), and his success in physics. The film stars Eddie Redmayne and Felicity Jones, with Charlie Cox, Emily Watson, Simon McBurney, Christian McKay, Harry Lloyd, and David Thewlis featured in supporting roles.
The Hawking Excitation
"The Hawking Excitation" is the 21st episode of the fifth season of "The Big Bang Theory" that first aired on CBS on April 5, 2012. It is the 108th episode overall. After learning that Stephen Hawking is coming to lecture at Caltech, Howard (Simon Helberg) is hired to maintain his wheelchair equipment. When Sheldon (Jim Parsons) discovers this, he is desperate to meet Hawking. Howard says he can, but only if he completes a humiliating series of tasks. The final scene of the episode features a short cameo appearance by cosmologist Stephen Hawking. Hawking was revealed to appear on the show in March 2012; he was the third high-profile guest star in season 5.
Future of Life Institute
The Future of Life Institute (FLI) is a volunteer-run research and outreach organization in the Boston area that works to mitigate existential risks facing humanity, particularly existential risk from advanced artificial intelligence (AI). Its founders include MIT cosmologist Max Tegmark, Skype co-founder Jaan Tallinn, and its board of advisors includes cosmologist Stephen Hawking and entrepreneur Elon Musk. The FLI mission is to catalyze and support research and initiatives for safeguarding life and developing optimistic visions of the future, including positive ways for humanity to steer its own course considering new technologies and challenges.
1_Apprentice
he was trully amazing
0_Wizard
He worked on gravitational singularity. I don't know what that means, but it sure sounds important!
His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation.
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Stephen Hawking
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BKL singularity
A Belinsky-Khalatnikov-Lifshitz (BKL) singularity is a model of the dynamic evolution of the Universe near the initial singularity, described by an anisotropic, homogeneous, chaotic solution to Einstein's field equations of gravitation. According to this model, the Universe is oscillating around a gravitational singularity in which time and space become equal to zero. This singularity is physically real in the sense that it is a necessary property of the solution, and will appear also in the exact solution of those equations. The singularity is not artificially created by the assumptions and simplifications made by the other special solutions such as the Friedmann–Lemaître–Robertson–Walker, quasi-isotropic, and Kasner solutions.
Gravitational singularity
A gravitational singularity or spacetime singularity is a location in spacetime where the gravitational field of a celestial body becomes infinite in a way that does not depend on the coordinate system. The quantities used to measure gravitational field strength are the scalar invariant curvatures of spacetime, which includes a measure of the density of matter. Since such quantities become infinite within the singularity, the laws of normal spacetime cannot exist. Gravitational singularities are mainly considered within general relativity, where density apparently becomes infinite at the center of a black hole, and within astrophysics and cosmology as the earliest state of the universe during the Big Bang.
Black hole
A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, no locally detectable features appear to be observed. In many ways a black hole acts like an ideal black body, as it reflects no light.
Schwarzschild metric
In Einstein's theory of general relativity, the Schwarzschild metric (also known as the Schwarzschild vacuum or Schwarzschild solution) is the solution to the Einstein field equations that describes the gravitational field outside a spherical mass, on the assumption that the electric charge of the mass, angular momentum of the mass, and universal cosmological constant are all zero. The solution is a useful approximation for describing slowly rotating astronomical objects such as many stars and planets, including Earth and the Sun. The solution is named after Karl Schwarzschild, who first published the solution in 1916.
Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass are brought toward (or "gravitate" toward) one another, including objects ranging from atoms and photons, to planets and stars. Since energy and mass are equivalent, all forms of energy (including light) cause gravitation and are under the influence of it. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides. The gravitational attraction of the original gaseous matter present in the Universe caused it to begin coalescing, forming starsand for the stars to group together into galaxiesso gravity is responsible for many of the large scale structures in the Universe.
Universe
The Universe is all of space and time (spacetime) and its contents, which includes planets, moons, stars, galaxies, the contents of intergalactic space and all matter and energy. While the size of the entire Universe is still unknown, it is possible to measure the observable universe. The earliest scientific models of the Universe were developed by ancient Greek and Indian philosophers and were geocentric, placing Earth at the centre of the Universe. Over the centuries, more precise astronomical observations led Nicolaus Copernicus to develop the heliocentric model with the Sun at the centre of the Solar System.
Inflation (cosmology)
In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch lasted from 10 seconds after the conjectured Big Bang singularity to sometime between 10 and 10 seconds after the singularity. Following the inflationary period, the Universe continues to expand, but at a less rapid rate. Inflation theory was first developed by Alan Guth at Cornell in 1979. It developed further in the early 1980s. It explains the origin of the large-scale structure of the cosmos. Quantum fluctuations in the microscopic inflationary region, magnified to cosmic size, become the seeds for the growth of structure in the Universe (see galaxy formation and evolution and structure formation).