19.1 Mirrors
19.2 Lenses
19.3 Optical Instruments
19.4 The Eye and Vision
How Can You Make Glass Disappear?
Procedure
Pour vegetable oil into a container until it is half full. Repeat this procedure using water in a second container.
Insert a section of glass tubing into each container.
Look at the glass tubing through the side of the container with vegetable oil. Then look at the glass tubing through the side of the container with water.
Think About It
Observing What did you see when you looked at the glass tubing through the container with the vegetable oil? Through the container with the water?
Inferring Based on your observations, what can you infer about how light travels through the vegetable oil and the glass tubing? Through the water and the glass tubing?