Results 1 - 10 of 6466 for  Wikipedia / Bibcode / Wikipedia    (3565152 articles)

Bibcode print that page

The bibcode is an identifier used by a number of astronomical data systems to specify literature references. The bibcode was developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database (NED), but is now used more widely, for example, in the NASA Astrophysics Data System .

wikipedia.org | 2011/4/27 2:57:12

Jupiter print that page


The planet was known by astronomers of ancient times and was associated with the mythology and religious beliefs of many cultures. The Romans named the planet after the Roman god Jupiter . [ 14 ] When viewed from Earth , Jupiter can reach an apparent magnitude of −2.94, making it on

Quantum Zeno effect print that page

The quantum Zeno effect is a name coined by George Sudarshan and Baidyanath Misra of the University of Texas in 1977 in their analysis of the situation in which an unstable particle , if observed continuously, will never decay. [ 1 ] One can nearly "freeze" the evolution of the system

wikipedia.org | 2011/7/8 6:33:26

Cellular automaton print that page


A cellular automaton (pl. cellular automata , abbrev. CA ) is a discrete model studied in computability theory , mathematics , physics , complexity science , theoretical biology and microstructure modeling. It consists of a regular grid of cells , each in one of a finite number of states

Cold fusion print that page


The media reported that nuclear fusion was happening inside the electrolysis cells, [ 3 ] and these reports raised hopes of a cheap and abundant source of energy. [ 4 ] Hopes fell with the big number of negative replications, the withdrawal of many positive replications, the apparition of

Astronomy print that page


Astronomy is one of the oldest sciences. Prehistoric cultures left behind astronomical artifacts such as the Egyptian monuments , Nubian monuments and Stonehenge , and early civilizations such as the Babylonians , Greeks , Chinese , Indians , and Maya performed methodical observations of

Big Bang print that page


The Big Bang model, or theory, is the prevailing cosmological theory of the early development of the universe . [ 1 ] The theory purports to explain some of the earliest events in the universe. According to the theory, the universe was once in an extremely hot and dense state that expanded

Star print that page


A star is a massive, luminous ball of plasma held together by gravity . At the end of its lifetime, a star can also contain a proportion of degenerate matter . The nearest star to Earth is the Sun , which is the source of most of the energy on Earth. Other stars are visible from Earth during

Earthquake prediction print that page

An earthquake prediction is a prediction that an earthquake of a specific magnitude will occur in a particular place at a particular time (or ranges thereof). Despite considerable research efforts by seismologists , scientifically reproducible predictions cannot yet be made to a specific

wikipedia.org | 2011/9/16 20:52:44

Radon print that page


Radon is formed as part of the normal radioactive decay chain of uranium and thorium. Uranium and thorium have been around since the earth was formed and their most common isotope has a very long half-life (4.5 billion years). Uranium and thorium, radium , and thus radon, will continue to