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词汇 Light seconds
分类 英语词汇 英语翻译词典
释义

Light seconds

原声例句
VOA常速英语_美洲

NASA recently released these images taken from the craft some 3.2 million kilometers just 11 light seconds from earth.

美国航空航天局最近发布了从距离地球仅11光秒约320万公里的飞船上拍摄的图像。

绅士怪盗

He emptied his glass slowly, smoked one cigarette and lighted a second.

他慢慢倒空杯子， 抽了一根烟， 又点上了第二根。

英语百科

Light-second

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 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 299792458 metres (just over 186282 miles).
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