John Beverley Oke

John Beverley Oke (23 March 1928 – 2 March 2004) was an astronomer and professor of astronomy at Caltech. He worked in astronomical photometry and spectroscopy and is well known for creating instruments for the detection and measurement of cosmic phenomena. His instruments were used on the 200 inches (5.1 m) Hale telescope at Mt. Palomar, California and the Keck telescope on Mauna Kea, Hawaii. “He was one of the first really serious and really excellent astronomer-instrumentalists,” says James E. Gunn, Eugene Higgins Professor of Astronomy at Princeton University Observatory, “and he and the instruments he designed and built were very largely responsible for keeping Palomar and the 200-inch telescope so far ahead of the rest of the world during the 1960s, 1970s, and 1980s.”

His work and instruments led to the spectacular 1963 discovery that quasar 3C 273 was receding from Earth at one sixth the speed of light.

References

Further reading

Oke

Oke or OKE may refer to:

Oke (name)

Oke is both a surname and a given name. Notable people with the name include:

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OKE: Operation Kill Everything

OKE: Operation Kill Everything (also known simply as OKE) is the fourteenth mixtape by American rapper The Game hosted by DJ Skee. The mixtape was released on October 8, 2013, his first project since leaving Interscope Records, following the release of his fifth album Jesus Piece (2012). It was also released in promotion of his upcoming sixth studio album. The mixtape featured guest appearances by Too Short, Schoolboy Q, Chris Brown, Lil Wayne, Problem, Nipsey Hussle, Juicy J, Young Jeezy, Clyde Carson, Skeme, Stat Quo, and Ty Dolla Sign among others. Production on the mixtape was handled by Cardiak, DJ Mustard, SAP, and Cool & Dre among others.

Background

In December 2012, The Game released Jesus Piece, the final album on his contract with Interscope Records. Just before its release he founded Rolex Records with Stat Quo, which was later renamed The Firm. On May 7, 2013, The Game announced a new mixtape Operation Kill Everything was almost finished recording. Later that same day, The Game released a remix to Kendrick Lamar's "Bitch Don't Kill My Vibe", which was originally thought to be the first song from the album. Then on July 16, 2013, he released remixes to Migos' "Versace" and TeeFlii's "This D".

Bev

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Electronvolt

In physics, the electronvolt (symbol eV; also written electron volt) is a unit of energy equal to approximately 160 zeptojoules (symbol zJ) or 6981160000000000000♠1.6×10⁻¹⁹ joules (symbol J). By definition, it is the amount of energy gained (or lost) by the charge of a single electron moving across an electric potential difference of one volt. Thus it is 1 volt (1 joule per coulomb, 7000100000000000000♠1 J/C) multiplied by the elementary charge (e, or 6981160217662079999♠1.6021766208(98)×10⁻¹⁹ C). Therefore, one electron volt is equal to 6981160217662079999♠1.6021766208(98)×10⁻¹⁹ J. Historically, the electron volt was devised as a standard unit of measure through its usefulness in electrostatic particle accelerator sciences because a particle with charge q has an energy E = qV after passing through the potential V; if q is quoted in integer units of the elementary charge and the terminal bias in volts, one gets an energy in eV.

The electron volt is not an SI unit, and its definition is empirical (unlike the litre, the light year and other such non-SI units), thus its value in SI units must be obtained experimentally. Like the elementary charge on which it is based, it is not an independent quantity but is equal to 1 J/C √2hα / μ₀c₀. It is a common unit of energy within physics, widely used in solid state, atomic, nuclear, and particle physics. It is commonly used with the metric prefixes milli-, kilo-, mega-, giga-, tera-, peta- or exa- (meV, keV, MeV, GeV, TeV, PeV and EeV respectively). Thus meV stands for milli-electron volt.

List of MBTA bus routes

The Massachusetts Bay Transportation Authority bus division operates bus routes in the Boston, Massachusetts metropolitan area. All routes connect to MBTA subway, MBTA Commuter Rail, and/or other MBTA Bus services. Many routes are descendants of the streetcar routes of the Boston Elevated Railway, or of suburban companies including the Eastern Massachusetts Street Railway, Middlesex and Boston Street Railway, and Newton and Boston Street Railway.

Silver Line

The Silver Line is a bus rapid transit system marketed as rapid transit. It is divided into two branches: Waterfront service (SL1, SL2, and the rush-hour Shuttle) that runs through the South Boston Transitway tunnel, and Washington Street service (SL4 and SL5) that runs on the surface via Washington Street. The Waterfront service costs the same as a subway fare, while the Washington Street service costs a regular bus fare.

The SL5 route was created in 2002 as a replacement for the Washington Street Elevated. The Shuttle route began operations in 2004, followed by the Sl1 and SL2 in 2005 when dual-mode buses became available. The SL4 was introduced in 2009 as a replacement for the canceled Phase III tunnel.