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In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.

In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu

In this activity about light and perception, learners create pictures in thin air.

In this activity, learners make optical fibers out of strips of gelatin.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.