Question

Make a rainbow

Try to make your own rainbow. You can try this project in the morning or in the evening. Stand with your back towards the Sun. Take a hosepipe or a water pipe used in the garden. Make a fine spray in front of you. You can see different colours of rainbow in the spray.

Answer 1

Make a Rainbow

Materials:

• Hosepipe or garden water pipe
• A sunny day (morning or evening is ideal)

Procedure:

• Stand with your back towards the Sun.
• Hold the hosepipe or garden water pipe in front of you.
• Turn on the water and create a fine spray by partially covering the nozzle with your thumb.

Observation:

• You will see different colours of the rainbow forming in the spray of water.

Explanation:

• When sunlight passes through the water droplets in the spray, it gets refracted, reflected, and dispersed.
• This process splits the sunlight into its constituent colours, forming a spectrum that appears as a rainbow.

Conclusion:

• By using a hosepipe to create a fine spray of water with the Sun behind you, you can observe the formation of a rainbow. This demonstrates the principles of refraction, reflection, and dispersion of light.