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    American Physical Society
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    Learners shine the light of a laser pointer through sheets of fabric that all have a different number of threads per inch. By looking at the patterns created, learners calculate the wavelength of...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners trap a thin layer of air between two pieces of Plexiglas to produce rainbow-colored interference patterns. Learners bend, twist, or press on the plates to observe...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    Science Friday
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    In this activity related to nanotechnology, learners observe some of the effects that result from creating a thin layer of material several nanometers thick. They also learn about thin film...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    American Physical Society
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    In this activity on page 13 of the PDF, learners use a laser pointer (with known wavelength of light) to measure the thickness of a human hair. By shining the laser on a hair, analyzing the...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    The University of Texas McDonald Observatory
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    In this activity, learners construct their own spectroscope as they explore and observe spectra from familiar light sources. Learners can be challenged to make technological improvements to their...

    $5 - $10 per group Ages 14 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    This is a quick activity (on page 2 of the PDF under Butterfly Wings Activity) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes