Colorado State University

Peppers Ghost (El Fantasma de Pepper)

Pepper’s Ghost Create a Hologram-Like Illusion Using Light and Geometry Pepper’s Ghost is an optical illusion that uses the principles of geometric optics to create a 3D visual effect. While it may look like a hologram, the underlying physics is quite different—and much simpler to explore at home! What You’ll Need: Clear plastic Scissors Tape [...]

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Spooky Science: Adventures Beyond the Rainbow

In this episode, we’ll show you how to see the blood flowing through your veins, how to use a light bulb to take an “X-ray” of your hand, and how to make writing vanish and reappear. In a half hour, we’ll share 20+ demonstrations that are based in science, but appear a bit spooky, from [...]

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