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Showing results 41 to 57 of 57
Interference in a Ripple Tank
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In this optics activity, learners explore interference by adding wax blocks to a ripple tank.
Terrestrial Hi-Lo Hunt
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.
Rainbow Film
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In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.
Stroboscope
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In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.
Underwater Hide and Seek
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In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.
Your Father's Nose
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In this fun optics activity, learners explore principles of light, reflection (mirrors), and perception. Learners work in pairs and sit on opposite sides of a "two-way" mirror.
Inverse Square Law
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In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.
Photosynthetic Pictures Are Worth More Than a Thousand Words
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This activity provides an opportunity for learners to observe and examine how carbon dioxide, water, and light produce glucose/starch through a process called photosynthesis.
Laser Projection Microscope
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In this activity, learners use a laser pointer to project a microscopic image of a liquid sample suspended from the tip of a syringe.
Laser Jello
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In this activity, learners use gelatin as a lens to investigate the properties of laser light.
Shimmering Lenses
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In this activity, learners use Jell-O to explore lenses. Learners cut Jell-O into convex and concave lens shapes and examine how light exits each lens in a darkened room.
On the Fringe (formerly Bridge Light)
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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.
Mix-N-Match Light
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This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match.
Colored Shadows
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In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.
Oil Spot Photometer
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In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.
Total Internal Reflection
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In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.
Wintergreen
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In this outdoor, winter activity, learners find living green plants under the snow and determine the light and temperature conditions around the plants.