The Z80 CPU is an 8-bit based microprocessor. It was introduced by Zilog in 1976 as the startup company's first product. The Z80 was conceived by Federico Faggin in late 1974 and developed by him and his then-11 employees at Zilog from early 1975 until March 1976, when the first fully working samples were delivered. With the revenue from the Z80, the company built its own chip factories and grew to over a thousand employees over the following two years.
The gas constant is also known as the molar, universal, or ideal gas constant, denoted by the symbol R or R and is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure–volume product, rather than energy per temperature increment per particle. The constant is also a combination of the constants from Boyle's law, Charles's law, Avogadro's law, and Gay-Lussac's law. It is a physical constant that is featured in many fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation.
The Cantor distribution is the probability distribution whose cumulative distribution function is the Cantor function.
The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C turbojet. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. Most JT3D engines still in service today are used on military aircraft, where the engine is referred to by its USAF designation of TF33.
The B-series are a family of inline four-cylinder DOHC automotive engines introduced by Honda in 1988. Sold concurrently with the D-series which were primarily SOHC engines designed for more economical applications, the B-series were a performance option featuring dual overhead cams along with the first application of Honda's VTEC system. To identify a Honda B-series engine, the letter B is normally followed by two numbers to designate the displacement of the engine, another letter, and in US-spec engines, another number. The Japanese spec-engines are normally designated with a four character alphanumeric designation. The B-series, the B20B variant in particular, is not to be confused with the earlier Honda B20A engine introduced in 1985 and primarily available in the Prelude and Accord-derived vehicles from 1985-1991. While sharing some design elements and both being multivalve Honda four-cylinders, the B-series and B20A differ substantially in architecture, enough to be considered distinct engine families.
In geology, the places known as hotspots or hot spots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. Their position on the Earth's surface is independent of tectonic plate boundaries. There are two hypotheses that attempt to explain their origins. One suggests that hotspots are due to mantle plumes that rise as thermal diapirs from the core–mantle boundary. The other hypothesis is that lithospheric extension permits the passive rising of melt from shallow depths. This hypothesis considers the term "hotspot" to be a misnomer, asserting that the mantle source beneath them is, in fact, not anomalously hot at all. Well-known examples include the Hawaii, Iceland and Yellowstone hotspots.
The General Electric CF6 is a family of high-bypass turbofan engines produced by GE Aviation. Based on the TF39, the first high-power high-bypass jet engine, the CF6 powers a wide variety of civilian airliners. The basic engine core also powers the LM2500, LM5000, and LM6000 marine and power generation turboshafts. The newer GEnx family has been introduced, intended to replace the CF6 family.
Greater Caucasus is the major mountain range of the Caucasus Mountains.
The Lycoming O-320 is a large family of 92 different naturally aspirated, air-cooled, four-cylinder, direct-drive engines commonly used on light aircraft such as the Cessna 172 and Piper Cherokee. Different variants are rated for 150 or 160 horsepower. As implied by the engine's name, its cylinders are arranged in horizontally opposed configuration and a displacement of 320 cubic inches (5.24 L).
The P-270 Moskit is a Soviet supersonic ramjet powered anti-ship cruise missile. Its GRAU designation is 3M80, air launched variant is the Kh-41 and its NATO reporting name is SS-N-22 Sunburn. The missile system was designed by the Raduga Design Bureau during the 1970s as a follow up to the P-120 Malakhit. The Moskit was originally designed to be ship-launched, but variants have been adapted to be launched from land, underwater (submarines) and air, as well as on the Lun-class ekranoplan. The missile can carry conventional and nuclear warheads. The exact classification of the missile is unknown, with varying types reported. This uncertainty is due to the secrecy surrounding an active military weapon. The missile has been purchased and exported to the People's Liberation Army Navy (China) and Indian Navy (India).
Cluster of differentiation 80 is a protein found on dendritic cells, activated B cells and monocytes that provides a costimulatory signal necessary for T cell activation and survival. It is the ligand for two different proteins on the T cell surface: CD28 and CTLA-4. CD80 works in tandem with CD86 to prime T cells.
Panagal Park is a park and a locality in T Nagar, Chennai. The park is named after the Raja of Panagal, the Chief Minister of Madras Presidency who created the park. It is an important junction and is the commercial centre of T Nagar.
The Yenisei Gulf is a large and long estuary through which the lower Yenisei River flows into the Kara Sea.
Ponneri is a state assembly constituency in Tiruvallur district of Tamil Nadu, India. The seat is reserved for candidates from the Scheduled Castes. It comprises a portion of Ponneri taluk and is a part of Thiruvallur constituency for national elections to the Parliament of India. Elections and winners in the constituency are listed below.
This is a list of the extreme points of Sri Lanka.
Maduravoyal is a legislative assembly constituency in Tiruvallur district in the Indian state of Tamil Nadu. It consists of a portion of Ambattur taluk and part of Chennai Corporation. It falls under Sriperumbudur. Elections and winners from this constituency are listed below.
German submarine U-80 was a Type VIIC submarine of Nazi Germany's Kriegsmarine during World War II. She was laid down at the Bremer Vulkan Vegesacker Werft in Bremen as yard number 8 on 17 April 1940, launched on 11 February 1941 and commissioned on 8 April under Oberleutnant zur See Georg Staats.
German submarine U-1008 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.
