- hefner unit
- 亥夫纳单位
English-Chinese electron industry dictionary (英汉电子工程大词典). 2013.
hefner unit
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Hefner lamp — in chemistry is a flame lamp that burns amyl acetate. The lamp was invented by Friedrich von Hefner Altenec in 1884 and he proposed its use as a standard flame for photometric purposes.The Hefner lamp provided the German standard for luminosity… … Wikipedia
Hefner candle — (HC) or Hefnerkerze (HK) a former unit for measuring the intensity of light. The unit is named for F. von Hefner Altenack (1845 1904), who invented a laboratory light standard, the Hefner lamp, which burned isopentyl acetate to provide… … Dictionary of units of measurement
hefner candle — ˈhefnə(r) noun Usage: usually capitalized H Etymology: after Friedrich von Hefner Alteneck died 1904 German electrical engineer : a German standard unit of luminous intensity equal to about 0.92 of the candela * * * /hef neuhr/, Optics. a German… … Useful english dictionary
Hefner candle — /hef neuhr/, Optics. a German unit of luminous intensity, equal to 0.92 of a candela. [1895 1900; named after F. von Hefner Alteneck (1845 1904), German electrical engineer] * * * … Universalium
Candela — This article is about the unit of luminous intensity. For other uses, see Candela (disambiguation). Photopic (black) and scotopic[1] (green) luminosity functions. The photopic includes the CIE 1931 standard[2] … Wikipedia
Хефнер-Альтенек, Фридрих фон — Фридрих фон Хефнер Альтенек Friedrich von Hefner Alteneck … Википедия
The Playboy Mansion — (also known as the Playboy Mansion West out of reference to the original Playboy Mansion that was located in Chicago at 1340 N. State Parkway: Chicago, IL, 60610 6103), is located in the Holmby Hills area of Los Angeles, California and is the… … Wikipedia
List of Sons of Anarchy characters — This is a list of characters from Sons of Anarchy. Sons of Anarchy is a drama on the American TV network FX; it focuses on the lives of an outlaw motorcycle club in Northern California. Contents 1 Sons of Anarchy Motorcycle Club 1.1 Active SAMCRO … Wikipedia
Orson Welles — Welles in 1937 (age 21) photographed by Carl Van Vechten Born George Orson Welles May 6, 1915(1915 05 06) Ken … Wikipedia
The Challengers (band) — The Challengers were an instrumental surf rock band in the 1960s, located in Los Angeles. They started early in the game and helped make the genre popular. Their debut album Surfbeat is the biggest selling surf album of all time and almost single … Wikipedia
lake — lake1 /layk/, n. 1. a body of fresh or salt water of considerable size, surrounded by land. 2. any similar body or pool of other liquid, as oil. 3. (go) jump in the lake, (used as an exclamation of dismissal or impatience.) [bef. 1000; ME lak(e) … Universalium
