The 博彩游戏智能推荐Science of Light Refraction

When sunlight enters tiny water droplets suspended in the air after a rainstorm, it undergoes refraction, or bending, as it moves from one medium to another. The light rays slow down and change direction upon entering the droplet, which is the first step in creating a rainbow.

Dispersion of Light into Colors

Inside each water droplet, the refracted light reflects off the back surface and exits at different angles depending on its wavelength. This process separates white light into its component colors—red, orange, yellow, green, blue, indigo, and violet—due to the varying degrees of refraction for each color.

Optimal Viewing Conditions

Rainbows are most visible when the sun is behind the observer and there are still water droplets in the air. The angle at which light exits the droplets creates a circular arc, typically appearing as a semicircle to observers on the ground. This explains why rainbows often seem to appear in specific directions after rainfall.

Conclusion

In summary, rainbows form after rain and sunlight because of the interaction between light and water droplets in the atmosphere. Through refraction, dispersion, and reflection, nature transforms ordinary sunlight into a stunning display of colors that delights viewers around the world.