Have you ever wondered why straight lines seem curved or bending sometimes?

Have you ever wondered why straight lines seem curved or bending sometimes?

Let’s learn why it happens through an experiment and what is refraction?

Materials Required

A4 sheet, black sketch pen or pencil, ruler, a transparent glass, water

Method

1. Take the sheet and draw slanting lines with a black sketch pen or pencil on it.
2. Fill the transparent glass with water.
3. Keep the glass of water in front of the sheet.
4. Look through the glass and watch what happens!

Observation: When you will look through the glass of water u will see that the slanting lines are appearing as curved lines and not straight lines. This happens due to ‘refraction’.

What is Refraction?

Refraction is the bending of light. It occurs when light travels from one medium to another. During the experiment, the light travelled from the image of the sheet through the air to the glass into the water and then, out of the glass into the air, to finally reach our eyes. As a result, the light path crosses and the image appears curved which was slanting.

By Prerna Kapoor, Class VII & Abhinav Kapoor, Class I, Ryan International School, Greater Noida

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