The principle of keyhole imaging is that the light in the same uniform medium, without the interference of gravitational action, will move along the straight-line propagation. That is namely the straight-line propagation of light. When a board with small holes is used to block between the object and the wall, the reflection of the object will be formed when turning on the bulb. We call this phenomenon keyhole imaging. There are all kinds of constellations on the slide. Let's get to see them.
Accessories provided :
1. Baseboard
2.Sideboard with a hole
3-5. Sideboard
6-7. Top boards
8. Slide
9. Battery case
10. Switch
11. Bulb
12. Wire
13. Double-side tape
How to Assemble the DIY-Star Projector Kit for School PDF
Sound and Music STEM project kits
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Solar power car/robot kit for school
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