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What is Nanotechnology?
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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.
Spectroscope
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In this activity, learners construct their own spectroscope as they explore and observe spectra from familiar light sources.
Spots, Lines and Lasers
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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.
How Thick is Your Hair?
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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.