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Glowing in the Dark: Testing Phosphorescence
Learn about phosphorescence and how certain materials can absorb and store energy from a light source. Then discover which type of light gets the brightest glow from a glow-in-the-dark star.
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Fun With Optics: Can You Explain How A Telescope Works?
Use simple materials to explore the properties of reflection and refraction as you discover how optics work in telescopes.
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Illuminating Luminescence
Compare and contrast different forms of luminescence by observing how chemiluminescence, phosphorescence, and fluorescence produce or emit light.