Benham’s disk example that you can make yourself.
Glue the picture on some cardboard and allow to dry.
Pierce the middle of the disc with a nail.
Insert the pencil through the hole and spin the disc.
School science visits since 2004!
– Curriculum-linked & award-winning incursions.
– Over 40 primary & high school programs to choose from.
– Designed by experienced educators.
– Over 2 million students reached.
– Face to face incursions & online programs available.
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– Help students learn how science really works
Get the Unit of Work on the human body here!
- Learn about the major body systems
- Dive into the five senses
- How does digestion, respiration, circulation and many other processes work and more!
Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more
Why Does This Happen?
Colour perception is achieved by three types of cells in the retina of the eye called cones.
With the three types of cones, one is more sensitive to red light, one is more sensitive to blue light and the other is more sensitive to green light. Each cone reacts at different speeds to light and keep responding for different lengths of time. You only see white when all three cones respond equally.
The alternating white and black flashes on the disk cause the cones to respond at different times and lengths, leading the brain to believe it is seeing coloured light.
Variables to test
- What is the minimum amount of black ink needed on the paper to produce the effect?
- Vary the speed of the spinning disc
- What is the minimum size of the disc needed to produce the effect?
Teaching about the human body? From 5 senses to the skeletal system, the Human Body workshop has you covered!
Get in touch with FizzicsEd to find out how we can work with your class.
Human Body
Years 3 to 6
Maximum 30 students
School workshop (NSW only)
60 or 90 minutes
Online Class Available
STEM Full Day Accelerator - Primary
Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials.
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