Infinity Mirror Illusion Box
Source: Stemoto Original
Create an optical illusion that looks like a tunnel going on forever! By sandwiching a string of LED lights between a regular mirror and a two-way mirror, kids learn about light reflection and optics in a mind-bending way.
Categorisation
Props & Materials Required
- •A shallow cardboard box or a deep picture frame
- •A standard glass mirror (or mirrored craft paper)
- •A piece of clear acrylic or glass (same size as the mirror)
- •Two-way mirror film (privacy window tint)
- •A string of battery-powered LED fairy lights
- •Tape and scissors
Step-by-Step Instructions
Tint the Window
Take your clear piece of acrylic or glass and carefully apply the two-way mirror film to one side. Use a credit card to smooth out any air bubbles. This is your 'front window'.
Mount the Back Mirror
Tape or glue your standard mirror (or mirrored paper) face-up in the bottom of your shallow cardboard box.
Add the Lights
Take your string of LED fairy lights and tape them around the inside edge of the box, framing the bottom mirror. Leave the battery pack hanging outside the box so you can turn it on.
Seal the Illusion
Place your newly tinted 'front window' on top of the box. The tinted side should face INWARD toward the lights. Tape the edges down securely to trap the lights inside.
Look into Infinity
Turn on the LED string and look through the front window. The light will bounce back and forth between the two mirrors, creating an optical illusion of a deep, endless tunnel of lights!
Why It Works & Notes
This project teaches the physics of optics. When the LEDs shine between the regular mirror and the two-way mirror, the light bounces back and forth between them. Every time the light hits the two-way mirror, a little bit escapes into your eye, creating the illusion of a never-ending tunnel of lights!
Very safe. Applying the two-way mirror film to the clear acrylic without getting bubbles can be frustrating, so parents should help smooth it out! AI Optional: Have your child ask an AI 'How does a two-way mirror work?' to learn why police interrogation rooms use them!