explain primary rainbow with diagrams.
Answers
The primary rainbow forms between about 40° and 42° from the antisolar point. The light path involves refraction and a single reflection inside the water droplet. If the drops are large, 1 millimeter or more in diameter, red, green, and violet are bright but there is little blue.
Answer:
White sunlight actually contains a wide variety of colors, which may be roughly classified as seven colors, namely, red, orange, yellow, green, blue, indigo and violet. Normally, we see the sun in white color. After rain, there are still some tiny water droplets remained in the air. If there is sunshine a white sunbeam will be reflected and refracted by these tiny droplets. Different colors of light have different refractivity. They will be reflected in slightly different directions inside a water droplet. If we observe the sky from different angles of elevation, we will see different water droplets reflecting out different colors of light. A rainbow is formed .
When a sunbeam is being refracted twice and reflected once by the droplet, a primary rainbow will form.(2nd figure)
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