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General Physics Science Fair Project

Triboluminescence from Candy Sparks

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Triboluminescence from Candy Sparks | Science Fair Projects | STEM Projects
Can you make light just by chewing candy? Crushing a wintergreen Lifesaver between your teeth produces tiny flashes of white light. This effect is called triboluminescence (light made by mechanical force). Find a dark room with a mirror. Wait about 15 minutes for your eyes to adjust. Then chew a single wintergreen Lifesaver with your lips open. Watch your mouth in the mirror. Each time a piece of candy cracks, you see a brief spark. The sugar crystals build up opposite electrical charges when they break apart. Electrons jump between the pieces and strike nitrogen molecules in the air. The wintergreen flavoring absorbs that energy and re-emits it as visible light.

Hypothesis

The hypothesis is that chewing a Lifesaver candy will create flashes of light.

Science Concepts Learned

Triboluminescence

Crushing a wintergreen Lifesaver between your teeth in the dark produces tiny flashes of light. Find a dark room with a mirror. Wait about 15 minutes for your eyes to adjust. Then chew a single Lifesaver with your lips open and watch your mouth in the mirror. Each time a piece of candy cracks, you see a brief spark.

Method & Materials

You will wait in a dark room until you can see your teeth in the mirror, then chew a single Lifesaver candy while watching your mouth in the mirror.
You will need a glass of water, a mirror, and a Wintergreen Lifesaver candy.

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Results

The experiment showed that when a Lifesaver candy is chewed, flashes of light can be seen in the mouth. This is due to the electrons jumping between the pieces of candy and colliding with nitrogen molecules to create ultraviolet radiation.

Why do this project?

This science project is unique because it shows how everyday objects can be used to create light.

Also Consider

Experiment variations to consider include using different flavors of Lifesaver candy and using different types of candy to see if the same effect is produced.

Full project details

Additional information and source material for this project are available below.

Related videos

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