#light colour

⠀⠀ ֹ ꯭᯽ ּ 𝅄 ⠀⠀⠀mᥡ⠀⠀⠀ρrᥱttᥡ⠀⠀⠀girl

Origin of Light

Solar energy results from nuclear fusion in the sun’s core, which creates an enormous, continuous flow of radiant energy that travels through- out the solar system. The energy that reaches us from all the stars twinkling in our galaxy can- not compare with what we receive from the sun, the only significant source of energy for Earth’s atmosphere.

This radiant energy released in the form of electromagnetic waves, which travel unimpeded from the sun in straight lines at the speed of light-186,000 miles a second. Although the intensity of the energy diminishes as it travels the 93 million miles from the sun to Earth’s

outer atmosphere, the amount of energy received by Earth from the sun in ten seconds still is equivalent to all the electricity generated on the planet in one week. Electromagnetic waves vary in length, which is measured as the distance between the crests of waves

Different types of Light

All the types of these waves together constitute the electromagnetic spectrum, which ranges from extremely short ultraviolet waves to very long radio waves. Visible light, which occupies a narrow band of that spectrum, comprises colors that vary in wavelength from short to long.

Shorter wavelengths scatter more effectively in the atmosphere, which is why the sky is blue-a color with a relatively short wavelength-on a sunny day. At dawn and dusk, light must pass through more atmosphere, allowing the longer orange and red light waves to predominate over the widely scattered blue waves.

The multicolored arc of a rainbow is produced by sunlight striking raindrops beneath a rain cloud. Light refracts-bends-when it passes through drops of water. Each color of light refracts at a different angle: Violet bends more than blue, which bends more than green, and so on, with red refracting the least. If sunlight enters a raindrop at just the proper angle, it refracts, and its many colors spread into a visible array.

Sunlight refracted through millions of raindrops forms a rainbow. On a primary rainbow, red is the outside color and violet the inside color. Occasionally a secondary rain- bow appears slightly higher in the sky, and in it the colors of the rainbow are reversed (opposite). A rainbow’s position in the sky depends on the sun’s altitude above the horizon-the lower the sun, the higher the rainbow appears.