How Does An Eye Work Human Body Experiment
In this fun and easy science experiment, we’re going to explore and investigate the human body and how eyes work.
Materials:
- Wax paper
- Safety pin
- Paper cup
- Rubber band
Instructions:
- Using the safety pin, poke a small hole in the center of the bottom of the paper cup.
- Place a piece of the wax paper over the mouth of the cup.
- Use the rubber band to hold the wax paper in place.
- Point the bottom of the paper cup at a bright light from about two to three feet away.
- Slowly walk toward the light and you should soon see an image of the light bulb appear upside down on the wax paper.
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How it Works:
Light enters our eyes through our pupils after it reflects off of an object. The light then makes it way through the different parts of our eyes and produces an image on our retina that is upside down. The image then travels to our brain through the optic nerve. Our brain compensates by reversing the image so that it is right-side up so we do not see an upside down image. In a pinhole viewer, the light enters through the small pinhole we made in the bottom of the cup. This is similar to the way that light enters the eye through the pupil. The light creates an image on the wax paper, similar to the way that light creates an image on the retina of the eye. Our pinhole viewer lacks a “brain” to “correct” the image, so it will appear upside down on the wax paper.
Make This A Science Project:
Try a white plastic grocery bag. Try tracing paper. Try tissue paper.
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