6.6 - 6.8 Bending light

• Science
• Middelbare school
• havo, vwo
• Leerjaar 2

Bending Light simulation from PhET Interactive Simulations

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Goto link: 

https://phet.colorado.edu/sims/html/bending-light/latest/bending-light_en.html

What do you notice about the chopstick on the previous page?

Try this at home with some other things like a spoon or fork. Describe your observation and place a photo in your answers.

Why do you think things look different under water?

Write down which tool(s) will help you to investigate the behavior of light.

Describe the behavior of light when it shines on water. Provide examples for a variety of incident angles to support your description.

What changes if the light is underwater and the light goes into air?
 
What changes if you shine light on glass?

Test materials with other indexes of refraction to see if your ideas about the behavior of light seem comprehensive.
Write a summary description of what happens to light when it goes from one medium to another. Use the following vocabulary words in your summary: index of refraction, incident angle, reflected angle, and refracted angle.

The difference in refraction angles is small and difficult to detect in this simulation, so I have shown a possible experimental setup for you to try. How much does the angle of refraction change from 380nm to 700nm when the angle of incident is 80?

Run some of your own experiments to see if you can detect a difference in refracted angles at other incident angles. Why did I choose 80 degrees?

Use the Speed tool as you vary the wavelength to help understand why the angle of refraction varies. Describe the results of your experiments

Does the speed of the light colour change during refraction or reflection?

1. YES
2. NO

Experiment to find ways to make rainbows.
Insert at least one setup where light passing through a prism gives a rainbow and describe why a rainbow is formed.
 
Explain why only some types of light will yield rainbows.