Everyone has marveled at a rainbow in the sky. But how do these colors come about, and which colors are involved? The experiment kit with color films and cards, a prism and a “rainbow peephole” invites you to conduct many colorful experiments to discover the secrets of the rainbow.

The heat of a tea candle is sufficient to power the candle car. The candle heats up a thermo element on one side, water provides cooling on the other. From the difference in temperature, voltage is generated to power the car’s engine.

The motion of the crank is transferred via the gear drives. This way the dynamo rotates fast enough to make the LED light up as brightly as a flashlight

Cold water on one side, hot water on the other. From the difference in temperature, the thermo element generates voltage.

Torus is a wooden 3D puzzle to build a toroidal structure. Outer diameter is 60 cm. The kit includes 864 wooden parts, assembly by screwing it together.

Something special for architects, designers, mathematicians and engineers and for those who want to become one. This special type of construction gave new impetus to architecture in the 1960s.

A wooden 3D puzzle to build a geodesic dome or a complete sphere inspired by Buckminster Fuller. Diameter is 64 cm. The kit includes 270 wooden parts, assembly by screwing it together.

Something special for architects, designers, mathematicians and engineers and for those who want to become one. This special type of construction gave new impetus to architecture in the 1960s.