Why Does the Ruler Change Size?

Why Does the Ruler Change Size?
In this Video we show you the steps to conduct this cool science experiment, where the rule appears to get wider when viewed through different types of liquids. You can follow along at home using a few common items.

Enjoy the video! Leave your questions & comments below.

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Why Does the Ruler Change Size?

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Experiment Details

Items Needed
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* Tall Glass Cup
* Ruler
* Water
* Cooking Oil
* Rubbing Alcohol

Instructions
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Step 1 - Begin by filling a glass 1/3 of the way full with water.

Step 2 - Next, slowly add cooking oil to the glass, until it is 2/3 full. Tilt the glass to the side while pouring in the oil.

Step 3 - Then, slowly add rubbing alcohol into the glass until it is almost full. Let the liquid settle for 30 seconds before moving to the next step.

Step 4 - Lower a ruler into the glass and look through the side of the cup. Why does the ruler appear wider?

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Видео Why Does the Ruler Change Size? канала Cool Science Experiments Headquarters