英语词汇“light second”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

C2. Astronomy. As a modifier, designating units of length that are equal to the distance travelled by light in a vacuum in a specified amount of time, as in light minute, light second, etc.Recorded earliest in light year n. 1.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > speed of light > distances travelled

light second1908

light minute1925

1864 Monthly Notices Royal Astron. Soc. 24 71 The Absolute Parallax of 21258 Lalande, 0″.2709±0″.0112 corresponding to a distance of 761000±3200 times that of the Sun = 12.01±0.50light-years.

1908 F. H. Smith Nature, Witness ii. 31 The sun is nearly..500 light-seconds from us.

1925 D. L. Thomson in J. A. Thomson Sci. & Relig. App. 254 A light-year is over five million million miles, and the sun is only eight-and-a-half light-minutes from the earth.

1931 J. W. Campbell in Amazing Stories Q. Spring 187/2 We would never be able to escape if the space control breaks down before we are at least two light hours away!

1963 Nature 18 May 651/2 If the flashes are real, either the optical source itself is of the order of light-days in size, or..it must contain substructures of this scale.

1964 Astrophysical Jrnl. 140 15 A maximum flash duration of only a few hours is possible for a region a light-month in radius.

2004 Cumberland (Maryland) Times-News 12 Sept. 4 e/2 As we leave the Earth, the first major body we encounter is the moon at a distance of about 1.28 light seconds.

单词	light second
释义	> as lemmas light second C2. Astronomy. As a modifier, designating units of length that are equal to the distance travelled by light in a vacuum in a specified amount of time, as in light minute, light second, etc.Recorded earliest in light year n. 1. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > speed of light > distances travelled light second1908 light minute1925 1864 Monthly Notices Royal Astron. Soc. 24 71 The Absolute Parallax of 21258 Lalande, 0″.2709±0″.0112 corresponding to a distance of 761000±3200 times that of the Sun = 12.01±0.50light-years. 1908 F. H. Smith Nature, Witness ii. 31 The sun is nearly..500 light-seconds from us. 1925 D. L. Thomson in J. A. Thomson Sci. & Relig. App. 254 A light-year is over five million million miles, and the sun is only eight-and-a-half light-minutes from the earth. 1931 J. W. Campbell in Amazing Stories Q. Spring 187/2 We would never be able to escape if the space control breaks down before we are at least two light hours away! 1963 Nature 18 May 651/2 If the flashes are real, either the optical source itself is of the order of light-days in size, or..it must contain substructures of this scale. 1964 Astrophysical Jrnl. 140 15 A maximum flash duration of only a few hours is possible for a region a light-month in radius. 2004 Cumberland (Maryland) Times-News 12 Sept. 4 e/2 As we leave the Earth, the first major body we encounter is the moon at a distance of about 1.28 light seconds. extracted from lightn.¹ < as lemmas
随便看	perlustrate perlustrated perlustrates perlustrating perlustration perlustrations perlustrator perlustre perm perm five perma perma- perma-press perma-pressed perma-tan perma-tanned permacultural permaculturalist permaculture permaculturist permafrost permafrosted permafrosts permalink permalloy

> as lemmas