How is a rainbow made by waterfall?

Rainbows are caused by the refraction and reflection of sunlight in water droplets. When sunlight hits a water droplet, it is refracted, or bent. The different colors of light are refracted at different angles, with violet light being refracted the most and red light being refracted the least. This causes the light to be separated into a rainbow.

For a rainbow to be formed, the sun must be behind the observer and the water droplets must be in front of the observer. The sun's rays must also strike the water droplets at a certain angle in order to produce a rainbow. This angle is about 42 degrees.

Waterfalls can create rainbows because they produce a lot of water droplets. When sunlight hits these water droplets, it can be refracted and reflected to create a rainbow. The best time to see a rainbow at a waterfall is when the sun is low in the sky, either early in the morning or late in the afternoon.

Here is a more detailed explanation of how a rainbow is formed by a waterfall:

1. Sunlight strikes the water droplets in the waterfall.

2. The light is refracted, or bent, as it enters the water droplets.

3. The different colors of light are refracted at different angles, with violet light being refracted the most and red light being refracted the least.

4. The light is then reflected off the back of the water droplets.

5. The light is refracted again as it exits the water droplets.

6. The refracted light forms a rainbow.

The rainbow will be located at an angle of about 42 degrees from the sun.