Search results
Results From The WOW.Com Content Network
Richard R. Arnold. Richard Robert "Ricky" Arnold II (born November 26, 1963, in Cheverly, Maryland) is an American educator and a NASA astronaut. He flew on Space Shuttle mission STS-119, which launched March 15, 2009, and delivered the final set of solar arrays to the International Space Station. [1] He launched again in 2018 to the ISS ...
The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. [ 1 ] Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its ...
General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General relativity generalizes special relativity and refines Newton's law of universal gravitation ...
Philosophy of space and time is the branch of philosophy concerned with the issues surrounding the ontology and epistemology of space and time. While such ideas have been central to philosophy from its inception, the philosophy of space and time was both an inspiration for and a central aspect of early analytic philosophy. The subject focuses ...
The creator of "Hey Arnold!," Craig Bartlett , decided to muster up some good ole' nostalgia and drew the famous characters like Arnold, Helga and Gerald into famous movie scenes and post them to ...
Aether theories. In the history of physics, Aether theories (or ether theories) proposed the existence of a medium, a space-filling substance or field as a transmission medium for the propagation of electromagnetic or gravitational forces. Since the development of special relativity, theories using a substantial aether fell out of use in modern ...
The term "Big Bang" is an unfortunate misnomer. It implies an "explosion," and explosions are events that happen in space. This is incorrect; the term describes the first instant in the expansion of space itself. Some would even interpret it as the very beginning of the universe, evolving from "nothing."
The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits of electrons around an atomic nucleus. Bohr–Sommerfeld theory is named after Danish physicist Niels Bohr and German physicist Arnold Sommerfeld. Sommerfeld argued that if electronic orbits ...