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The Disappearing Beaker—Demonstration Kit

By: Lee Marek, Retired, Naperville High School, Naperville, IL

Item #: AP6264

Price: $34.15

In the Disappearing Beaker Demonstration Kit, show your students that there’s more to light travel than “meets the eye.” Set a beaker in another, pour in pale yellow oil, and watch your students marvel while the beaker disappears.

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Product Details

Set a beaker in another, pour in pale yellow oil and the beaker disappears! In this entertaining demonstration of refractive index, show your students that there’s more to light travel than “meets the eye.” By matching the index of refraction of glass with canola oil, glass objects fade from sight. Teacher Demonstration Notes included.

Concepts: Index of refraction, magnification.
Time Required: 15 minutes
Materials Provided: Unmarked Pyrex® beaker, Pyrex test tube, red and green pop beads, magnifying lens and canola oil.