A unique kit for prism glasses with total reflection, ideal for numerous exciting experiments on optical perception.

The image that the eye lens casts onto our retina is upside down, Leonardo da Vinci discovered this 500 years ago. But how is it that we still see a “correct”, upright image? With the inversion glasses you can investigate this question.
What is vision anyway? The American psychologist George Stratton was also working on a scientific answer to this question when he experimented with inversion prisms for the first time in 1896. He wanted to know whether the visual process could adapt to the upside-down image in such a way that the world would look “normal” again to the observer.
With the inversion glasses, you can find an answer yourself.

This kit swaps top and bottom. To see what happens when you swap left and right, take a look at the pseudoscope.

Features: to assemble, suitable for spectacle wearers, can be opened, light-tight, top-bottom reversal and right-left reversal adjustable

Construction time: approx. 1 hour

Includes:
1 plastic spectacle housing, approx. 18.5 x 8.5 x 9 cm, red-black, ventilated, with adjustable elastic band
2 dove prisms made of acrylic glass, 3.5 x 2 x 8.5 cm, colourless, transparent
accessories:
4 plastic screw rings, Ø 5.1 cm, black
2 prism holders made of MDF, Ø 5 cm
1 sandpaper crafting file
detailed construction manual

Dimensions of the built model: approx. 19 cm x 14 cm x 8 cm

Made in Germany

Needed for the assembly:

• a set square or something similar to determine the right angle
• quick-setting 2-component glue to glue the prisms in place
• a black lacquer pen

Supervision by adults:
Children under the age of 14 should only assemble and use the reversing goggles under adult supervision in order to avoid risks due to improper handling.

Risk of injury:
Wearing the reversing goggles can lead to orientation difficulties and should be done in a safe, obstacle-free area to minimise the risk of injury. It is recommended that an accompanying person be called in for support.
Activities requiring precise perception, such as climbing stairs, driving, cycling or working with machines, must not be carried out while wearing the reversing goggles.

Health risk:
Wearing reversing goggles can lead to nausea, dizziness or headaches. In such cases, discontinue use immediately. People with balance problems or neurological disorders should only use the reversing spectacles after consulting a doctor.

Danger from sunlight:
Never look directly into the sun through the reversing goggles. As without goggles, this can lead to serious eye damage.

Use of adhesives:
When using adhesive, follow the manufacturer’s safety instructions. Work in well-ventilated areas and avoid skin or eye contact.

Intended use:
The kit should be used in accordance with the enclosed instructions. Independent modifications may impair the functionality and safety of the model built.
AstroMedia GmbH and FUnique accepts no liability or warranty for damage caused by improper use of the reversing doddles or failure to observe the instructions.