These candles are used in the viewing of Pepper's ghost. You say you don't believe in ghost? You will after doing this experiment. Pepper's ghost is an illusion based on the properties that glass both reflects and transmits light. When 2 candles are used with a thick plate of glass ghost flames are produced as you view the candles at different angles. Candles are of equal size and sold in packs of 4.
Arbor Scientific is a leading provider of Physics and Physical Science teaching equipment tested and approved by educators recognized for their expertise. Arbor Scientific works with teachers at all levels to find the ‘Cool Stuff’ – unique demonstration and laboratory tools – and then provides lesson plans, supportive teaching guides and science teaching supplies to make each learning experience fun and effective.