Additional Info

• ID Code: O4-35
• Purpose: Demonstrate an impossible figure in a dramatic way.
• Description: The walk-in box is set up on one side of the lecture hall and viewed by a TV camera on the opposite side, with the view by the TV camera shown on the rear TV screen above the blackboards in the lecture hall. Students watch as the instructor "walks into" the box. A spotlight is used to illuminate the box while using the TV projector.

  Due to the complexity of setup, please give a minimum of three working days notice when ordering this demonstration.

  This demonstration is primarily intended for special events. For routine classroom use, consider the tabletop version O4-34.

• Availability: Available
• References: REFERENCES: (PIRA unknown.) See Demonstration Reference File for interesting descriptions of this apparatus, how to build it, how to present it, and some variations.
• Videos-1: Click here to see Gwen walk into the box
• Videos-2: Click here to see Gwen walk out of