The 3D Mirascope

PIRA: 6A20.35

Brief Overview

A 3D mirascope, also known as a holographic image maker, creates a stunning visual illusion using two concave parabolic mirrors. Light rays from an object placed in the bottom mirror reflect off both mirrors and converge, forming a real image that appears to float above the top mirror’s opening. This demonstration explores how curved mirrors manipulate light to produce optical illusions. The mirascope generates an image that appears tangible, but when touched, fingers pass through empty space—reinforcing the power of optical physics.

Materials Required

• A 3D mirascope 
• A small object (plastic frog or duck)
• A light source for better visibility (optional)

Set-up Instructions

1. Place the bottom concave mirror securely on a surface.
2. Position a small object at the bottom mirror's focal point.
3. Align the top concave mirror so its focal point matches the vertex of the bottom mirror.
4. Adjust lighting to enhance the illusion’s clarity.

How to Perform the Demonstration

1. Observe the floating image above the top mirror’s opening.
2. Try to touch the image, it will vanish beneath your fingers.
3. Change viewing angles to see how the illusion shifts.
4. Discuss the optical principles that make this effect possible.

Safety

Handle mirrors carefully to prevent scratches or damage.