What is aRainbow?
• A rainbow is an arc of colors seen in the sky opposite the sun.
• It is caused by the dispersion of sunlight in water droplets.
4.
Conditions for RainbowFormation
• Sunlight
• Rain or mist
• Observer between sun and rain, with the sun behind
5.
The Science BehindIt
• Refraction: Light bends as it enters the raindrop.
• Dispersion: White light splits into its component colors.
• Internal Reflection: Light reflects inside the raindrop.
• Refraction (again): Light bends again as it exits the drop.
6.
Color Order
• Red(outer edge)
• Orange
• Yellow
• Green
• Blue
• Indigo
• Violet (inner edge)
7.
Types of Rainbows
•Primary rainbow
• Secondary rainbow (fainter, reversed colors)
• Supernumerary bows (faint, extra bands)
8.
Fun Facts
• Notwo people see the same rainbow.
• Rainbows are actually full circles; we usually see an arc.
• Double rainbows occur due to double internal reflection.
9.
Summary
• Rainbows resultfrom the interaction of sunlight and water droplets.
• Refraction, dispersion, and reflection create the colorful arc.
• They are beautiful examples of natural optics.
