Facts about Sunlight
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This diagram introduces sunlight, the light produced by the Sun, the star at the centre of our solar system.
It gathers together some useful facts and introduces some important terms that you can check out in the next section.
Remember that:
- As the Sun explodes with the force of a billion one-megaton nuclear bombs every second it gives off electromagnetic radiation.
- Sunlight is a form of electromagnetic radiation.
- The electromagnetic radiation given off by the sun includes all wavelengths of the electromagnetic spectrum.
- By the time sunlight has passed through the atmosphere and reaches the ground it contains infrared, visible, and ultraviolet wavelengths of light.
- Viewed from the ground, sunlight contains a portion of the electromagnetic spectrum.
- Viewed from outer space, sunlight contains all of the electromagnetic spectrum.
- Without sunlight, life as we know it would not be possible because it carries the energy that plants need to grow and the heat that keeps the world warm.
Description
Facts about Sunlight
Facts about Sunlight
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About the diagram
About the diagram
- This diagram introduces sunlight, the light produced by the Sun, the star at the centre of our solar system.
- It gathers together some useful facts and introduces some important terms concerning the Sun and the electromagnetic radiation it emits.
Remember that:
- As the Sun explodes with the force of a billion one-megaton nuclear bombs every second it gives off electromagnetic radiation.
- Sunlight is a form of electromagnetic radiation.
- The electromagnetic radiation given off by the sun includes all wavelengths of the electromagnetic spectrum.
- By the time sunlight has passed through the atmosphere and reaches the ground it contains infrared, visible, and ultraviolet wavelengths of light.
- Viewed from the ground, sunlight contains only a small portion of the electromagnetic spectrum.
- Viewed from outer space, sunlight contains the whole of the electromagnetic spectrum.
- Without sunlight, life as we know it would not be possible because it carries the energy that plants need to grow and the heat that keeps the world warm.
Some key terms
Solar radiation
Electromagnetic radiation
Electromagnetic spectrum
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