WordNet
- a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter
- the base of the natural system of logarithms; approximately equal to 2.718282...
PrepTutorEJDIC
- エルグ(エネルギーの単位)
- え‐,あの‐
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/12/03 20:36:12」(JST)
[Wiki ja表示]
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この項目では、仕事の単位について説明しています。砂漠の分類については「砂漠#土質による分類」をご覧ください。 |
エルグ
erg |
記号 |
erg |
系 |
CGS単位系 |
種類 |
組立単位 |
量 |
仕事・エネルギー・熱量 |
SI |
10-7 J |
組立 |
dyn·cm |
定義 |
1 dynの力がその力の方向に物体を1 cm動かすときの仕事 |
語源 |
ギリシャ語 εργον(ergon)(仕事) |
テンプレートを表示 |
エルグ(erg)は、CGS単位系における仕事・エネルギー・熱量の単位である。その名前は、ギリシャ語で「仕事」を意味する単語εργον(ergon)に由来する。
1エルグは、1ダイン(dyn)の力がその力の方向に物体を1センチメートル(cm)動かすときの仕事と定義されている。この定義において、ダインをニュートン(N, 1N = 105dyn)に、センチメートルをメートル(m, 1m = 102cm)に置き換えると、SIにおける仕事・エネルギーの単位であるジュール(J)になる。よって、1 J = 107 erg, 1 erg = 10−7 J となる。
エルグは非SI単位であり、同じ物理量のジュールの使用が推奨されている。日本においては、SIへの移行を目的として1993年11月1日に施行された新計量法において仕事・エネルギーの単位にはジュールを使用することが定められており、1995年10月1日以降は商取引などでのエルグの使用が禁止されている。
符号位置
記号 |
Unicode |
JIS X 0213 |
文字参照 |
名称 |
㋍ |
U+32CD |
- |
㋍
㋍ |
エルグ |
[Wiki en表示]
For other uses, see Erg (disambiguation).
"micro-erg" redirects here. For the micro-electroretinogram, see Micro-ERG.
The erg is a unit of energy and work equal to 10−7 joules. It originated in the centimetre–gram–second (CGS) system of units. It has the symbol erg. The erg is not an SI unit. Its name is derived from ergon (’έργον) a Greek word meaning work or task.[1]
An erg is the amount of work done by a force of one dyne exerted for a distance of one centimeter. In the CGS base units, it is equal to one gram centimeter-squared per second-squared (g·cm2/s2). It is thus equal to 10−7 joules or 100 nanojoules (nJ) in SI units. An erg is approximately the amount of work done (or energy consumed) by one common house fly performing one "push up", the leg-bending dip that brings its mouth to the surface on which it stands and back up.[2]
1 erg = 10−7 J = 100 nJ
1 erg = 10−10sn·m = 100 psn·m = 100 picosthène-metres
1 erg = 624.15 GeV = 7011624150000000000♠6.2415×1011 eV
1 erg = 1 dyne cm = 1 g·cm2/s2
History
In 1864, Rudolf Clausius proposed the Greek word (ἐργον) ergon for the unit of energy, work and heat.[3][4] In 1873, a committee of the British Association for the Advancement of Science, including British physicists James Clerk Maxwell and William Thomson defined the C.G.S. System of Units, and recommended the name erg or ergon for the C.G.S. unit of energy.[5]
In 1922, William Draper Harkins proposed the name micri-erg as a convenient unit to measure the surface energy of molecules[6] in surface chemistry.[7][8] It would equate to 10−14 erg,[9][10][11][6][12] the equivalent to 10−21 joule.
See also
- Lumen second, for the lumerg and lumberg units
- Metre–tonne–second system of units
- Foe (unit), relative measure for energy released by a supernova
References
- ^ Oxford English Dictionary
- ^ Filippenko, Alex, Understanding the Universe (of The Great Courses, on DVD), Lecture 44, time 24:30, The Teaching Company, Chantilly, VA, USA, 2007
- ^ Clausius, Rudolf (1867). "Appendices to Sixth Memoir [1864]. Appendix A. On Terminology.". In Hirst, T. Archer. The Mechanical Theory of Heat, With Its Applications to the Steam-engine and to the Physical Properties of Bodies. London: J. Van Voorst. p. 253. Retrieved 2014-03-17.
- ^ Howard, Irmgard K. (2001). "S is for Entropy. U is for Energy. What Was Clausius Thinking?" (PDF). Journal of Chemical Education 78 (4): 505. Bibcode:2001JChEd..78..505H. doi:10.1021/ed078p505. Retrieved 2014-03-17.
- ^ Thomson, Sir W; Foster, Professor GC; Maxwell, Professor JC; Stoney, Mr GJ; Jenkin, Professor Fleeming; Siemens, Dr; Bramwell, Mr FJ (September 1873). Everett, Professor, ed. First Report of the Committee for the Selection and Nomenclature of Dynamical and Electrical Units. Forty-third Meeting of the British Association for the Advancement of Science. Bradford: John Murray. p. 224. Retrieved 2014-03-17.
- ^ a b Jerrard, H.G.; McNeill, D.B. (2012-06-12) [1963]. A Dictionary of Scientific Units - Including dimensionless numbers and scales (5 ed.). Chapman and Hall Ltd., reprint: Springer Science & Business Media. ISBN 9400941110. 9789400941113. Retrieved 2015-02-15.
- ^ Cardarelli, François (1999) [1966]. Scientific unit conversion: A practical guide to metrication (2 ed.). Springer-Verlag London Limited. doi:10.1007/978-1-4471-0805-4. ISBN 978-1-85233-043-9. 1447108051, 9781447108054. Retrieved 2015-08-25.
- ^ Cardarelli, François (2003). Encyclopaedia of Scientific Units, Weights and Measures. Springer-Verlag London Ltd. ISBN 978-1-4471-1122-1.
- ^ Roberts, Lathrop Emerson; Harkins, William Draper; Clark, George Lindenberg (2013-07-01) [1922]. The Orientation of Molecules in Surfaces, Surface Energy, Adsorption, and Surface Catalysis. V. The Adhesional Work Between Organic Liquids and Water: Vaporization in Steps as Related to Surface Formation. University of Chicago Digital Preservation Collection (University of Chicago). Retrieved 2015-08-25.
- ^ Holmes, Harry N. (1925). Colloid Symposium Monograph - Papers Presented at the Second National Symposium on Colloid Chemistry, Northwestern University, June, 1924 2 (1). The Chemical Catalog Company, Inc. Retrieved 2015-02-15.
- ^ Journal of the American Chemical Society - Issues for 1898-1901 include Review of American chemical research, v. 4-7; 1879-1937, the society's Proceedings 44. American Chemical Society. 1922. p. 665. ISSN 0002-7863. Retrieved 2015-02-15.
- ^ Partington, James Riddick (2010-02-17) [1949]. An Advanced Treatise on Physical Chemistry: Fundamental principles. The properties of gases 1. Longmans, Green. Retrieved 2015-08-25.
UpToDate Contents
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English Journal
- Analysis of free nucleotide monophosphates in human milk and effect of pasteurisation or high-pressure processing on their contents by capillary electrophoresis coupled to mass spectrometry.
- Mateos-Vivas M1, Rodríguez-Gonzalo E2, Domínguez-Álvarez J1, García-Gómez D1, Ramírez-Bernabé R3, Carabias-Martínez R1.
- Food chemistry.Food Chem.2015 May 1;174:348-55. doi: 10.1016/j.foodchem.2014.11.051. Epub 2014 Nov 14.
- A simple, efficient and green analytical method for the determination of free nucleotide monophosphates in human milk is proposed. It involves centrifugal ultrafiltration (CUF) as sample treatment and capillary electrophoresis-electrospray mass spectrometry (CE-ESI-MS) for separation and simultaneou
- PMID 25529691
- HES5 silencing is an early and recurrent change in prostate tumourigenesis.
- Massie CE1, Spiteri I2, Ross-Adams H2, Luxton H2, Kay J2, Whitaker HC2, Dunning MJ2, Lamb AD3, Ramos-Montoya A2, Brewer DS2, Cooper CS4, Eeles R4; UK Prostate ICGC Group, Warren AY2, Tavaré S2, Neal DE3, Lynch AG1.
- Endocrine-related cancer.Endocr Relat Cancer.2015 Apr;22(2):131-44. doi: 10.1530/ERC-14-0454. Epub 2015 Jan 5.
- Prostate cancer is the most common cancer in men, resulting in over 10 000 deaths/year in the UK. Sequencing and copy number analysis of primary tumours has revealed heterogeneity within tumours and an absence of recurrent founder mutations, consistent with non-genetic disease initiating events.
- PMID 25560400
- Prevalence of chromosomal rearrangements involving non-ETS genes in prostate cancer.
- Kluth M1, Galal R1, Krohn A1, Weischenfeldt J2, Tsourlakis C1, Paustian L1, Ahrary R1, Ahmed M1, Scherzai S1, Meyer A1, Sirma H1, Korbel J2, Sauter G1, Schlomm T3, Simon R1, Minner S1.
- International journal of oncology.Int J Oncol.2015 Apr;46(4):1637-42. doi: 10.3892/ijo.2015.2855. Epub 2015 Jan 27.
- Prostate cancer is characterized by structural rearrangements, most frequently including translocations between androgen-dependent genes and members of the ETS family of transcription factor like TMPRSS2:ERG. In a recent whole genome sequencing study we identified 140 gene fusions that were unrelate
- PMID 25625310
Japanese Journal
- Perpendicular magnetic tunnel junctions with strong antiferromagnetic interlayer exchange coupling at first oscillation peak
- Yakushiji Kay,Kubota Hitoshi,Fukushima Akio,Yuasa Shinji
- Appl. Phys. Express 8(8), 083003, 2015-07-22
- … A high IEC energy density (2.2 erg/cm<sup>2</sup>) and a high magnetoresistance ratio (110–150%) with an ultralow resistance-area product (2–5 Ω·µm<sup>2</sup>) were simultaneously achieved in the integrated magnetic tunnel junctions of the p-SAF structure. …
- NAID 150000111036
- ERG衛星へ向けた初期スピン・ニューテーション制御の低コスト化に関する検討 (宇宙・航行エレクトロニクス)
- 坂井 真一郎,福田 盛介,澤井 秀次郎 [他]
- 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115(67), 39-44, 2015-05-29
- NAID 40020491316
- ERG衛星搭載ミッションデータ処理システムの開発 : SpaceWireネットワークとRTOS (宇宙・航行エレクトロニクス)
- 高島 健,小川 恵美子,ERGプロジェクトチーム
- 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115(67), 35-38, 2015-05-29
- NAID 40020491293
Related Links
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Related Pictures
★リンクテーブル★
[★]
ユスリカアレルギー
[★]
ドパミン作動性線維
[★]
ユスリカアレルギー
[★]
総エネルギー消費量
[★]
- 関
- electroretinogram