Uploaded April 2025 | Updated September 2026, 3 weeks ago
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
• A template (four identical trapezoids)
• A smartphone or tablet with a video
What To Do:
1. Trace and cut out four identical trapezoids from the clear plastic.
2. Tape them together to form a pyramid that’s open at the top and bottom.
3. Place the pyramid on top of your smartphone screen, playing a compatible video.
4. Turn down the lights and view the illusion from the side—adjust your angle to get the best effect.
You’ll see a floating, ghost-like image that appears to hover inside the pyramid. This simple setup mimics a famous theatrical trick that dates back to the 1800s—and it’s a fun way to explore how light travels and reflects.
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
• A template (four identical trapezoids)
• A smartphone or tablet with a video
What To Do:
1. Trace and cut out four identical trapezoids from the clear plastic.
2. Tape them together to form a pyramid that’s open at the top and bottom.
3. Place the pyramid on top of your smartphone screen, playing a compatible video.
4. Turn down the lights and view the illusion from the side—adjust your angle to get the best effect.
You’ll see a floating, ghost-like image that appears to hover inside the pyramid. This simple setup mimics a famous theatrical trick that dates back to the 1800s—and it’s a fun way to explore how light travels and reflects.
