light minute

　

WordNet

1. the distance light travels in a vacuum in one minute; approximately 18 million kilometers
2. very thin and insubstantial; "thin paper"; "light summer dresses"
3. make lighter or brighter; "This lamp lightens the room a bit" (同)illume, illumine, light_up, illuminate
4. a condition of spiritual awareness; divine illumination; "follow Gods light" (同)illumination
5. having abundant light or illumination; "they played as long as it was light"; "as long as the lighting was good" (同)lighting
6. (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window" (同)visible_light, visible_radiation
7. any device serving as a source of illumination; "he stopped the car and turned off the lights" (同)light_source
8. the visual effect of illumination on objects or scenes as created in pictures; "he could paint the lightest light and the darkest dark" (同)lightness
9. a particular perspective or aspect of a situation; "although he saw it in a different light, he still did not understand"
10. a person regarded very fondly; "the light of my life"
11. a visual warning signal; "they saw the light of the beacon"; "there was a light at every corner"
12. an illuminated area; "he stepped into the light"
13. mental understanding as an enlightening experience; "he finally saw the light"; "can you shed light on this problem?"
14. public awareness; "it brought the scandal to light"
15. (used of color) having a relatively small amount of coloring agent; "light blue"; "light colors such as pastels"; "a light-colored powder" (同)light-colored
16. moving easily and quickly; nimble; "the dancer was light and graceful"; "a lightsome buoyant step"; "walked with a light tripping step" (同)lightsome, tripping
17. having relatively few calories; "diet cola"; "light (or lite) beer"; "lite (or light) mayonnaise"; "a low-cal diet" (同)lite, low-cal, calorie-free
18. less than the correct or legal or full amount often deliberately so; "a light pound"; "a scant cup of sugar"; "regularly gives short weight" (同)scant, short
19. (of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night" (同)wakeful
20. (physics, chemistry) not having atomic weight greater than average; "light water is ordinary water"
21. (used of soil) loose and large-grained in consistency; "light soil"
22. characterized by or emitting light; "a room that is light when the shutters are open"; "the inside of the house was airy and light"
23. demanding little effort; not burdensome; "light housework"; "light exercise"
24. designed for ease of movement or to carry little weight; "light aircraft"; "a light truck"
25. easily assimilated in the alimentary canal; not rich or heavily seasoned; "a light diet"
26. having little importance; "losing his job was no light matter"
27. intended primarily as entertainment; not serious or profound; "light verse"; "a light comedy"
28. not great in degree or quantity or number; "a light sentence"; "a light accent"; "casualties were light"; "light snow was falling"; "light misty rain"; "light smoke from the chimney"
29. of comparatively little physical weight or density; "a light load"; "magnesium is a light metal--having a specific gravity of 1.74 at 20 degrees C"
30. of little intensity or power or force; "the light touch of her fingers"; "a light breeze"
31. of the military or industry; using (or being) relatively small or light arms or equipment; "light infantry"; "light cavalry"; "light industry"; "light weapons"
32. psychologically light; especially free from sadness or troubles; "a light heart"
33. characterized by painstaking care and detailed examination; "a minute inspection of the grounds"; "a narrow scrutiny"; "an exact and minute report" (同)narrow
34. a unit of angular distance equal to a 60th of a degree (同)arcminute, minute of arc
35. a unit of time equal to 60 seconds or 1/60th of an hour; "he ran a 4 minute mile" (同)min
36. a short note; "the secretary keeps the minutes of the meeting"
37. apparatus for supplying artificial light effects for the stage or a film
38. the craft of providing artificial light; "an interior decorator must understand lighting"
39. set afire or burning; "the lighted candles"; "a lighted cigarette"; "a lit firecracker" (同)lit
40. a written account of what transpired at a meeting (同)proceedings, transactions

PrepTutorEJDIC

1. 〈U〉『光,光線』;明るさ / 〈U〉夜明け;日中;日光 / 〈C〉『明かり』(太陽・灯火など光を出すもの) / 〈U〉《時にa~》光輝(brightness),(目などの)輝き / 〈C〉(点火するための)火,火花 / 〈C〉明かり採り,採光窓 / 〈C〉《通例単数形で》(絵などの)明るい部分 / 〈U〉(…についての)知識,情報,理解《+『on』+『名』》 / 〈C〉(ものを見る)観点,見地;相 / 〈C〉この世に光を与える人;指導的な人物 / …‘に'『火をつける』《+『up』+『名』+『名』+『up』》 / …‘に'『明かりをつける』,‘を'照らす《+『up』+『名,』+『名』+『up』》 / 〈人〉‘を'明かりをつけて案内する / 〈表情など〉‘を'明るくする《+『up』+『名,』+『名』+『up』》 / 〈物が〉火がつく,点火する;明かりがつく《+『up』》 / 明るくなる,晴れ晴れする《+『up』》 / 『明るい』 / (色が)『薄い』
2. (重量が)『軽い』 / (いろいろな事について,その程座・量が)軽い,小さい / 『軽快な』 / 軽装の / 肩のこらない;気軽な / 手軽な,骨の折れなし / (食べ物が)消化のよい,もたれない / ふらふらする,目まいのする / アルコール分の少ない / (パンなどが)ふんわりした / (重量が)軽く / (程度が)軽く,容易に;軽装で
3. (車・馬などから)降りる《+『from』+『名』》(alight) / (木などに)〈鳥などが〉止まる《+『on』(『upon』)+『名』》 / (…に)〈打撃・運などが〉突然ふりかかる《+『on』(『upon』)+『名』》
4. (時間の単位の)『分』(1/60時間;《略》『m.,min.』) / (角度の単位の)分(1/60度;記号は'で,数字の後に付ける) / 〈U〉《しばしばa ~》《話》『瞬間』,ちょっとの間(moment) / (また『minute book』)《複数形で》(会議の)景事録
5. 『ごく小さい』,微細な / 『精密な』,詳しい / ささいな,取るに足りない
6. 照明,点火 / 照明方法(装置)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/09/30 09:12:36」(JST)

wiki en

[Wiki en表示]

Light-second
Unit of	length
Unit conversions
1 light-second in ...	... is equal to ...
SI units	7008299792458000000♠2.99792458×108 m
astronomical units	0.0020040 AU  3.1688×10−8 ly  9.7156×10−9 pc
imperial/US units	186282 mi

The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 7008299792458000000♠299792458 metres (just over 7005186282000000000♠186282 miles).

Just as the second forms the basis for other units of time, the light-second can form the basis for other units of length, ranging from the light-nanosecond (just under one international foot) to the light-minute, light-hour and light-day, which are sometimes used in popular science publications. The more commonly used light-year is also presently defined to be equal to precisely 7007315576000000000♠31557600 light-seconds, since the definition of a year is based on a Julian year (not Gregorian year) of exactly 365.25 days, each of exactly 7004864000000000000♠86400 SI seconds.

Use in telecommunications

Communications signals on Earth rarely travel at precisely the speed of light in free space, but distances in fractions of a light-second are still useful for planning telecommunications networks as they indicate the minimum possible delay between sender and receiver.

• One light-nanosecond is almost 300 millimetres (299.8 mm, 5 mm less than one foot), which limits the speed of data transfer between different parts of a large computer.
• One light-microsecond is about 300 metres.
• The mean distance, over land, between opposite sides of the Earth is 66.8 light-milliseconds.
• Communications satellites are typically 1.337 light-milliseconds (low earth orbit) to 119.4 light-milliseconds (geostationary orbit) from the surface of the Earth. Hence there will always be a delay of at least a quarter of a second in a communication via geostationary satellite (119.4ms times 2); this delay is just perceptible in a transoceanic telephone conversation routed by satellite.

Use in astronomy

The yellow shell indicating one light-day distance from the Sun compares in size with the positions of Voyager 1 and Pioneer 10 (red and green arrows respectively). It is larger than the heliosphere's termination shock (blue shell) but smaller than Comet Hale-Bopp's orbit (faint orange ellipse below). Click on the image for a larger view and links to other scales.

The faint yellow sphere centred on the Sun has a radius of one light-minute. For comparison, sizes of Rigel (the blue star in the top left) and Aldebaran (the red star in the top right) are shown to scale. The large yellow ellipse represents Mercury's orbit.

The light-second is a convenient unit for measuring distances in the inner Solar System, because it corresponds very closely to the radiometric data used to determine them (the match is not exact for an Earth-based observer because of a very small correction for the effects of relativity). The value of the astronomical unit (roughly the distance from the Earth to the Sun) in light seconds is a fundamental measurement for the calculation of modern ephemerides (tables of planetary positions): it is usually quoted as "light-time for unit distance" in tables of astronomical constants, and its currently accepted value is 499.004786385(20) s.

• The mean diameter of the Earth is about 0.0425 light-seconds.
• The average distance from the Earth to the Moon is about 1.282 light-seconds.
• The diameter of the Sun is about 4.643 light-seconds.
• The average distance from the Earth to the Sun is 499.0 light-seconds.

Multiples of the light-second can be defined, although apart from the light-year they are more used in popular science publications than in research works. For example, a light-minute is 60 light-seconds and the average distance from the Earth to the Sun is 8.317 light-minutes.

Unit	Definition	Distance			Example
		m	km	miles
light-second		7008299792458000000♠2.997924580×108 m	7008299800000000000♠2.998×105 km	7008299820787200000♠1.863×105 mi	average distance from the Earth to the Moon is about 1.282 light-seconds
light-minute	60 light-seconds	7010179875474800000♠1.798754748×1010 m	7010179900000000000♠1.799×107 km	7010179924659200000♠1.118×107 mi	average distance from the Earth to the Sun is 8.317 light-minutes
light-hour	60 light-minutes = 7003360000000000000♠3600 light-seconds	7012107925284900000♠1.079252849×1012 m	7012107900000000000♠1.079×109 km	7012107922608640000♠6.706×108 mi	semi-major axis of Pluto's orbit is about 5.473 light-hours
light-day	24 light-hours = 7004864000000000000♠86400 light-seconds	7013259020683700000♠2.590206837×1013 m	7013259000000000000♠2.590×1010 km	7013258943449600000♠1.609×1010 mi	Sedna is currently 0.52 light-days from the Sun; on an orbit that varies from a perihelion of 0.44 light-days to an aphelion of 5.41 light-days
light-week	7 light-days = 7005604800000000000♠604800 light-seconds	7014181314478600000♠1.813144786×1014 m	7014181300000000000♠1.813×1011 km	7014181373068800000♠1.127×1011 mi	The Oort cloud is thought to extend between 41 and 82 light-weeks out from the Sun
light-year	365.25 light-days = 7007315576000000000♠31557600 light-seconds	7015946073047300000♠9.460730473×1015 m	7015946100000000000♠9.461×1012 km	7015946133337600000♠5.879×1012 mi	Proxima Centauri is the nearest star to the Sun, about 4.24 light-years away

See also

• Light-year
• 100 megametres
• Geometrized unit system

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. Seasonal affective disorder: Treatment
• 2. 免疫グロブリン軽鎖（AL）アミロイドーシスおよび軽鎖重鎖沈着症の病因 pathogenesis of immunoglobulin light chain al amyloidosis and light and heavy chain deposition diseases
• 3. 皮膚病変に対するレーザーおよびインテンスパルスライトの原理 principles of laser and intense pulsed light for cutaneous lesions
• 4. 免疫グロブリン軽鎖（AL）アミロイドーシス（原発性アミロイドーシス）の臨床像、検査所見、および診断 clinical presentation laboratory manifestations and diagnosis of immunoglobulin light chain al amyloidosis primary amyloidosis
• 5. 意義未確定の単クローン性免疫グロブリン血症（MGUS）の診断 diagnosis of monoclonal gammopathy of undetermined significance

English Journal

• Beyond the Hookean Spring Model: Direct Measurement of Optical Forces Through Light Momentum Changes.

• Farré A1,2, Marsà F1,2, Montes-Usategui M3.
• Methods in molecular biology (Clifton, N.J.).Methods Mol Biol.2017;1486:41-76.
• The ability to measure forces in the range of 0.1-100 pN is a key feature of optical tweezers used for biophysical and cell biological studies. Analysis of the interactions between biomolecules and the forces that biomolecular motors generate at the single-molecule level has provided valuable insigh
• PMID 27844425

• Corneal elasticity after oxygen enriched high intensity corneal cross linking assessed using atomic force microscopy.

• Diakonis VF1, Likht NY2, Yesilirmak N1, Delgado D2, Karatapanis AE3, Yesilirmak Y1, Fraker C4, Yoo SH1, Ziebarth NM5.
• Experimental eye research.Exp Eye Res.2016 Dec;153:51-55. doi: 10.1016/j.exer.2016.10.008. Epub 2016 Oct 8.
• The purpose of this study was to assess anterior and mid corneal stromal elasticity after high intensity (HI) corneal cross linking (CXL), with and without oxygen (O2) enrichment, and compare these results to conventional CXL. Experiments were performed on 25 pairs of human cadaver eyes, divided int
• PMID 27725199

• Blue photoluminescent carbon nanodots from limeade.

• Suvarnaphaet P1, Tiwary CS2, Wetcharungsri J3, Porntheeraphat S3, Hoonsawat R1, Ajayan PM2, Tang IM4, Asanithi P5.
• Materials science & engineering. C, Materials for biological applications.Mater Sci Eng C Mater Biol Appl.2016 Dec 1;69:914-21. doi: 10.1016/j.msec.2016.07.075. Epub 2016 Aug 2.
• Carbon-based photoluminescent nanodot has currently been one of the promising materials for various applications. The remaining challenges are the carbon sources and the simple synthetic processes that enhance the quantum yield, photostability and biocompatibility of the nanodots. In this work, the
• PMID 27612786

Japanese Journal

• TiO₂分散PVDFシートにおけるチョーキング発生過程の微視的観察

• 高分子論文集 74(6), 616-620, 2017
• NAID 130006218927

• ポリシルセスキオキサンゲート絶縁膜の表面平坦化によるペンタセン薄膜トランジスタのキャリア移動度の向上

• 材料 66(9), 644-647, 2017
• NAID 130006083171

• TiO₂分散PVDFシートにおけるチョーキング発生過程の微視的観察

• 高分子論文集, 2017
• NAID 130006081962

Related Links

• Light minute - definition of light minute by The Free Dictionary

Thesaurus Antonyms Related Words Synonyms Legend: Switch to new thesaurus Noun 1. light minute - the distance light travels in a vacuum in one minute; approximately 18 million kilometers astronomy unit - a linear unit used for ...

• Light-minute - Units of Measurement Wiki - Wikia

A light-minute is a unit of length useful in astronomy, telecommunications, and relativistic... ... Retrieved from "http://units.wikia.com/wiki/Light-minute?oldid=5231"

---

★リンクテーブル★

関連記事	「light」「minute」「lighting」

「light」

　　[★]

• n.

• 光、光線、見地、

• adj.

• (比較級lighter)軽い、明るい

関

bright、photic、photoradiation、point of view、ray、viewpoint、visible light、visible radiation

　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　

「minute」

　　[★]

発音記号が違う

---

• n.

• 分。一瞬、瞬間。(the ～)現在、今。1分間に進む距離
• 覚え書き、控え。(文書の)簡単な草案。(pl.)議事録

• adj.

• 急ごしらえの

• vt.

---

• adj.

• 微少な、微細な。詳細な、精密な、細心な。些細な、取るに足らぬ

　 　 　 　 　 　

「lighting」

　　[★]

• n.

• 照明

関

illumination