how rainbow formed

what is rainbow and how rainbow are formed, and how we can see it. with beautiful slides

1. rainbow

2. What is rainbow??? One of nature's most splendid masterpieces is the rainbow. A rainbow is an excellent demonstration of the  dispersion of light  and one more piece of evidence that  visible light is composed of a spectrum of wavelengths , each associated with a distinct color. A   rainbow  is an  optical  and  meteorological  phenomenon that is caused by both  reflection  and  refraction  of light in  water  droplets resulting in a  spectrum  of  light  appearing in the sky. It takes the form of a  multicoloured   arc . Rainbows caused by  sunlight  always appear in the section of sky directly opposite the sun.

3. How a rainbow is formed???

4. As light enters a water droplet, the different wavelength colors bend at slightly separate angles. Some of this light reflects off the back of the droplet and is bent a second time as the droplet emerges from the light beam. Drops at different angles send distinctively different colors to the eye. If light is hitting raindrops at a proper angle, a secondary, larger rainbow will appear outside of the main rainbow. This secondary rainbow is fainter in color than the main one because the light has been reflected twice by each raindrop. This double reflection also reverses the colors in the secondary rainbow. To see a rainbow, an observer must have her back to the sun and rain must be falling in some part of the sky. Since each raindrop is lit by the white light of the sun, a spectrum of colors is produced. No two observers will ever witness exactly the same rainbow because each will view a different set of drops at a slightly different angle. Also, each color seen is from different raindrops.

5. Rainbows can be full circles, However the average observer sees only an arc,formed by illuminated droplets above the ground .

6. How can we see a rainbow???

7. Rainbows appear when raindrops (similar to a prism) reflect sunlight, thus breaking white sunlight into colors. To view a rainbow, your back must be to the sun as you look at an approximately 42 degree angle above the ground into a region of the atmosphere with suspended droplets of water or even a light mist. Each individual droplet of water acts as a tiny prism that both disperses the light and reflects it back to your eye. As you sight into the sky, wavelengths of light associated with a specific color arrive at your eye from the collection of droplets.

8. By Brigita galilea adu Dwiky lujinguru Nadya daramuli kale tHanK yOu