Think about daytime.The sun makes everything around you bright with light.During daytime,sunlight hits Earth's surface and makes it bright.During nighttime,the sun is near another part of Earth's surface,making that part bright,so you see darkness.At night,you also see the moon. ...
Lights with temperatures that measure between 2000K and 3000K are considered “warm light”, similar to the soft glow of a candle flame. The range between 3100K and 4500K is considered “neutral”, and comparable to natural sunlight. This temperature is often used when accurate color depiction...
SunlightUltraviolet RaysEnvironmental ExposureAge FactorsThe incidence of cutaneous malignant melanoma is still increasing in most light-skinned populations. Sunscreen use has been proposed for the primary prevention of melanoma. However, sunscreen use may increase time spent in the sun when users are ...
places which exceed one degree below the polar circle does not experience the midnight sun. Iceland is known to experience midnight sun even though most of the region of the located slightly to the south of the Arctic Circle. At the poles, the period of sunlight is a little bit more than...
The great American poet Robert Frost was the first poet to write a presidential inaugural poem. Titled “Dedication,” it was for John F. Kennedy’s inauguration in 1961. However, at age 87, Frost had trouble seeing the manuscript in the bright sunlight, so he simply recited an older poem...
Though the winter solstice is the day with the least amount of sunlight, that’s not because of the sunset. In fact, the earliest sunset happens about two weeks prior. 尽管冬至是日照最少的一天,但这不是因为日落时间早。事...
Estimated to be about 300 thousand species of plants, these living organisms get their energy from sunlight through photosynthesis. Before any animal walked on the land, plants had already grown there. About 500 million years ago during the Devonian period, the first plants colonized this new envi...
But some parts of Mercury receives very little direct sunlight, and some craters remain constantly in the dark. Let’s keep learning with our Top 10 Facts about Space and Top 10 Facts about the Solar System. Plus you can learn more about what’s in our Solar System with our Top 10 ...
We all depend on sunlight, but unless youlive at the equator, you won't get the same amount of it every day. Like all theplanetsin thissolar system,Earthrotates around an axis, an imaginary line between itsNorth and South poles. At the same time, it orbits the sun, finishing a new ...
The Earth is approximately 93 million miles (150 million kilometers) from the sun, according toSpace.com. At this distance, it takes about 8 minutes and 19 seconds for sunlight to reach our planet. 35. Something once collided with the moon ...