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How to Build A Candler Using and Overhead Projector | |
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| [designed by Katrin Becker] |
Last changed:
~~LASTMOD~~
It is possible to build your own candler without any fancy equipment. This is one most people can't make at home but most schools will have the equipment already. You will need the following materials:
- overhead projector
- several sheets of construction paper
- roll of industrial paper towel (not empty)
- some felt or soft cloth
To put it together:
- set up the projector in a place where your viewers can gather around it
- place several sheets of construction paper on the glass part of the project, leaving a small open area in the middle
- place the roll of paper towel on its end on top of the paper (the idea is to have the light from the projector shine up through the middle of the roll)
- place something soft (washcloth, felt, etc) around the edge of the opening
- place egg on top
CAUTION:
The light generates a fair bit of heat, so the projector will get quite warm. Be careful when you touch it. Also, don't leave the eggs on the candler too long because they might over-heat as well. Leaving the eggs for a minute or two will cause no harm but don't go away and do something else while an egg is on the candler. And, of course never leave the candler unattended when it is on.