Ohm
The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. Although several empirically derived standard units for expressing electrical resistance were developed in connection with early telegraphy practice, the British Association for the Advancement of Science proposed a unit derived from existing units of mass, length and time and of a convenient size for practical work as early as 1861. The definition of the ohm was revised several times. Today the definition of the ohm is expressed from the quantum Hall effect.
Definition
The ohm is defined as an electrical resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force.
in which the following units appear: volt (V), ampere (A), siemens (S), watt (W), second (s), farad (F), joule (J), kilogram (kg), metre (m), and coulomb (C).
OHM (band)
OHM (sometimes stylized Ohm: or OHM:) is an American instrumental rock/jazz fusion group fronted by former Megadeth guitarist Chris Poland. The band was formed in 2002 and has released three studio albums and a live album. A similar offshoot band named OHMphrey, also fronted by Poland, was formed in 2008.
The band often perform at the Baked Potato jazz club in Studio City, California.
Discography
Studio albums
Live albums
References
External links
Ohm (disambiguation)
Ohm (Ω) refers to the SI unit of electrical resistance named after Georg Ohm.
Ohm may also refer to:
OHM may refer to:
Tycho
Tycho may refer to:
People
Astronomy
Fiction
Software engineering
Tycho (musician)
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Tycho (pronounced like Tie-ko, with emphasis on the first syllable) is an American ambient music project led by Scott Hansen (born 1976 or 1977) as primary composer, songwriter and producer. Hailing from San Francisco, California, he is known as ISO50 for his photographic and design works. His music is a combination of downtempo vintage-style synthesizers and ambient melodies. The style of his music is very organic, typically incorporating clips of the human element into his songs (i.e. weather broadcasts, simple talking, or even breathing). His song, "Dictaphone's Lament", was used as the track on a music video entitled "Live Life to the Fullest", which was made by and featured on the action cartoon block Toonami. His song "Cascade" (originally made for an Adult Swim and Ghostly International compilation called Ghostly Swim) was played during the final moments of the original 11-year run of Toonami in 2008. As of December 2014, Tycho is signed to, and has released under, Ghostly International, but has also released music on Merck Records and Gammaphone Records.
Tycho (crater)
Tycho (/ˈtaɪkoʊ/) is a prominent lunar impact crater located in the southern lunar highlands, named after the Danish astronomer Tycho Brahe (1546–1601). To the south is the crater Street; to the east is Pictet, and to the north-northeast is Sasserides. The surface around Tycho is replete with craters of various sizes, many overlapping still older craters. Some of the smaller craters are secondary craters formed from larger chunks of ejecta from Tycho.
Age and description
Tycho is a relatively young crater, with an estimated age of 108 million years (Ma), based on analysis of samples of the crater ray recovered during the Apollo 16 mission. This age suggests that the impactor may have been a member of the Baptistina family of asteroids, but as the composition of the impactor is unknown this is currently conjecture. However, simulation studies give a 70 percent probability that the crater was created by a fragment from the same break-up that created asteroid 298 Baptistina; which was previously believed to be responsible for the formation of Chicxulub Crater and the extinction of the dinosaurs. However, that possibility was potentially ruled out by the Wide-field Infrared Survey Explorer in 2011.
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