Sunlight

Solar irradiance spectrum above atmosphere and at surface. Extreme UV and X-rays are produced (at left of wavelength range shown) but comprise very small amounts of the Sun's total output power.

Solar irradiance spectrum at top of atmosphere, on a linear scale and plotted against wavenumber

Sunlight on Mars is dimmer than on Earth. This photo of a Martian sunset was imaged by Mars Pathfinder.

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by the clouds or reflects off other objects, it is experienced as diffused light. The World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter.

单词	Solar spectrum
释义	Solar spectrum 原声例句亨利·亚当斯的教育（下） His own rays, with which he had doubled the solar spectrum, were altogether harmless and beneficent; but Radium denied its God — or, what was to Langley the same thing, denied the truths of his Science. 完全无害而且有益。但是镭否认它的上帝——或者，对兰利来说是一样的，否认他的科学的真理。英语百科 Sunlight Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by the clouds or reflects off other objects, it is experienced as diffused light. The World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter.
随便看	Syllogistic reasoning的意思 syllogistic的意思 syllogistry的意思 Syllogists的意思 syllogization的意思 syllogize的意思 syllogize的意思 syllogizer的意思 syllogizers的意思 syllogize的意思 syllogize的意思 Sylmar的意思 Sylnplocos caudata Wall.的意思 Sylnplocos Jacq.的意思 Sylnplocos prunifolia的意思 Syloga的意思 syloids的意思 sylon fx的意思 Sylonidae的意思 Sylopidae的意思 sylor的意思 Sylow的意思 Sylow group的意思 Sylow subgroup的意思 sylph的意思

Solar spectrum

Sunlight