“Seeing the Unseen” Labettini

INTRODUCTION: Einstein’s analysis of Brownian motion PROVED that atoms exist even though they are a million times too small to see. Scientists often rely on indirect measurements to “see the unseen”. These methods are usually highly reliable, and often better than “seeing with our own eyes”. Not seeing doesn’t mean not believing!

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“Seeing the Unseen” Labettini

G

?You will investigate six simple Mystery Shapes, each of which is sandwiched between foam-core guards so you can’t see them.

DO NOT PEEK AT THE MYSTERY SHAPES !!!

DO NOT POINT THE LASER AT ANYONE OR ANYTHING OTHER THAN THE MYSTERY SHAPE !!! 2

“Seeing the Unseen” Labettini

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?KEEP THE LETTER IN THE UPPER LEFT CORNER For REFERENCE !!!

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“Seeing the Unseen” Labettini

Use the reflection of the laser to figure out the size and outline of the Mystery Shape

Sketch the laser tracks on a sheet of paper clipped to the top of the Mystery Shape

G Draw the Mystery Shape on your Sketch Sheet. Do all 6 shapes.

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Example:

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“Seeing the Unseen” Labettini

A B C

D E F

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“Seeing the Unseen” Labettini

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“Seeing the Unseen” Labettini

A B C

D E F