A quality 60 degree acrylic prism allows you to learn to split a beam of light into a multicolored rainbow or look through the top beveled edge to reflect images into wonderful kaleidoscopic patterns. Instructions included. More information about the 60 Degree Prism

The vanes in the Crooke’s Radiometer are dark and light on opposite sides. Light striking these vanes leads to unequal forces which cause the radiometer to revolve inside its vacuum globe. The reason for the rotation has been the cause of much scientific debate since its invention by chemist Sir William Crooke in 1873. More information about the Radiometer

A precision crafted right angle acrylic prism includes instructions to learn secrets of prismatic effects. More information about the Right Angle Prism

These wonderfully made stirling engines are a joy to watch. They can run from the heat from your hand. They really get up to a speed when place on top of a cup of tea or coffee. Been made over a number of years and this shows with the performance. This version is has a clear plastic top and bottom plate which makes it ideal to put by a window to run from solar power. More information about the SOLAR Powered Precision Stirling Engine

These wonderfully made stirling engines are a joy to watch. They can run on the heat from your hand. They really get up to a speed when placed on top of a cup of tea or coffee. Been made over a number of years and this shows with the performance. This version is has a clear plastic top and bottom plate which makes it ideal to put by a window to run from solar power. More information about the SOLAR Powered Precision Stirling Engine (KIT)

This does everything the Levitron platinum pro can do but comes in an attractive cherrywood base. Powerful neodymium magnets allows the spinning top to float even higher. More information about the Cherry wood Levitron

This solar powered Stirling engine offers a dramatic demonstration of energy conversion. The Stirling engine with its parabolic mirror, can be attached to any conventional camera tripod. When properly aimed at the sun, incoming solar energy is focused on the heat cap of the engine and is converted to rotary motion. More information about the New Solar Dish Stirling Engine

This advanced version of the popular original has enhanced magnetic qualities, thanks to the use of high-powered neodymium iron boron magnets. Basically, this means Levitron Pro can go higher than any other anti-gravity top on the market and stay suspended there by the gyroscopic spinning force. More information about the Levitron Platinum Pro

Use sunshine to boil water, cook meals or experiment with this portable solar dish. It can boil up 4 Litres (7 pints) of water at 20 C in 20min. Temperatures can reach as high as 1200 C. More information about the Large Solar Dish 2.2kw 1.8 meter !

The first thing you notice about this product is the fact that it is levitating, then you notice it is spinning using just the power from the sun! Six ultra strong neodymium magnets keep it levitating. The motor is powered by four super efficient monocrystalline solar cells. More information about the Magnetically Levitated Solar Motor

This is the world's only pocket-sized solar lighter. The stainless steel parabolic mirror can focus the sun's radiant energy to a focal point which can reach 1000 degrees! More information about the Solar Lighter

These amazing little gadgets allow you to send any illuminated message to viewers up to 50 meters away! Words are left 'floating' in mid air as you move Spacewriter from side to side. Welcome to Wave Messaging! Only the size of a key fob. Spacewriter fits easily in the pocket, and makes a great fun novelty gift. More information about the Spacewriter