6A10.XX Micro Bank
Concepts
Reflections from flat mirrors, lenses
Overview
Coins appear to drop through a funnel that should be unable to pass the coins. The coins end up in a box, apparently shrunken.
In reality, the funnel doesn't exist, and the actual structure of the bank is cleverly obscured by mirrors. A lens (probably diverging) in front of the box makes the coins appear smaller.
Details
Equipment
- [1] Micro bank
- Coins
Script
- Show students the micro bank.
- Put coins in.
Additional Resources
References
- PIRA 6A10.XX, 6A60.XX
Disclaimer
- You can try this at home, but don't blame us if you get hurt somehow!
Last revised
- 2020
Technicals
Related AV
- There's a video of the micro bank with the back removed so you can see the box where the coins go. The back opens up around 2:49.
Related demos
If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.