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The Chandrasekhar limit ( / ˌtʃændrəˈʃeɪkər /) [1] is the maximum mass of a stable white dwarf star. The currently accepted value of the Chandrasekhar limit is about 1.4 M☉ ( 2.765 × 1030 kg ). [2] [3] [4] The limit was named after Subrahmanyan Chandrasekhar. White dwarfs resist gravitational collapse primarily through electron ...
In mathematics, the limit inferior and limit superior of a sequence can be thought of as limiting (that is, eventual and extreme) bounds on the sequence. They can be thought of in a similar fashion for a function (see limit of a function ). For a set, they are the infimum and supremum of the set's limit points, respectively.
e. Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency within authorized frequency ranges; authorized bands may vary ...
Radiocarbon dating helped verify the authenticity of the Dead Sea scrolls. Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon . The method was developed in the late 1940s at ...
Landauer's principle states that the minimum energy needed to erase one bit of information is proportional to the temperature at which the system is operating. More specifically, the energy needed for this computational task is given by. where is the Boltzmann constant. [2] At room temperature, the Landauer limit represents an energy of ...
Reconciliation (United States Congress) Budget reconciliation is a special parliamentary procedure of the United States Congress set up to expedite the passage of certain federal budget legislation in the Senate. The procedure overrides the Senate's filibuster rules, which may otherwise require a 60-vote supermajority for passage.
Speed limiter. A speed limiter is a governor used to limit the top speed of a vehicle. For some classes of vehicles and in some jurisdictions they are a statutory requirement, for some other vehicles the manufacturer provides a non-statutory system which may be fixed or programmable by the driver.
The difference between an ETOPS-enabled shorter flight path (the solid green line) and a flight path for non-ETOPS aeroplane (the dashed blue line), the last one is curved due to the required distance to alternates. ETOPS ( / iːˈtɒps /) is an acronym for Extended-range Twin-engine Operations Performance Standards —a special part of flight ...