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The Disappearing Beaker

SKU #GL-500
Availability: In Stock
Qty.
A great demonstration of 'index of refraction'.

Description

This clear beaker has no markings and bends light to the same degree as cooking oil. The borosilicate glass and the oil have roughly the same index of refraction. When this beaker is immersed into a container of oil, the beaker becomes invisible. Package includes the beaker and instructions. You supply the outer container which can be any clear, colorless container with at least a 4 inch opening.

Drop pieces of broken borosilicate glass into a large container of oil and watch the pieces disappear. Then, using tongs, reach in and remove a previously hidden, unbroken beaker. Ask students to explain.

Video


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2 reviews
good experiment
Review star icon Review star icon Review star icon Review star icon Review star icon Nov 17, 2012
Regular glass regular vegi oil. no special beaker!
fg

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advancedscienceteacher
Review star icon Review star icon Review star icon Review star icon Review star icon May 29, 2012
the students were amazed. A magical demo with a great science explanation that really helps the students make sense of some tough energy/light/wave related concepts
Janet Sweat

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