Engaging questions:
- How are colours on the TV set created?
- What are the base colours?
- How are complementary colours formed?
- What is the mechanism of the human eye action?
- What colours can the human eye perceive?
- What is the RGB scale?
Equipment: flashlights, filters: green, blue, red (they can be made of tinted film).
Description of the Activity :
Students put filters on the torches, and then watch the colour of light on a white sheet of paper. Then, they illuminate the same spot using two torches.
Discussion:
- What is the colour of light that will be formed as a result of superposition of light from all 3 torches?
- What is the colour of light that will be a result of putting on a torch 2 different filters?