A superb pair of solar eclipse glasses fully CE approved for safe viewing of eclipses, transits and larger sunspots filtering out 100% of harmful UV whilst showing a true orange solar disk.
Perfect for budding fossil hunters age 12+
Kit Form
If you want to look straight into the sun, you should only do so with the proper eye protection.
With a bit of cutting and glue you can make your own Solar Observation Specs with original Baader solar filters with a filter factor of 100,000. The filters are CE certified and offer perfect protection when observing the sun.
A steam engine made from cardboard, running with proper boiling steam - is that really possible? Oh yes!!!
See for yourself: this model not only looks great, it also works, happily chuff-chuffing away. The boiler, made from an aluminium tin, has a magnetic safety valve. The aluminium fire box underneath holds five tea lights. Both are enclosed in a safety cage made from galvanised wire mesh.
The heart of this unusual thermal engine is a thin ring of Nitinol wire (0.3mm). Some warm water is enough to make the Nitinol Engine run. Nitinol is an alloy of nickel and titanium which has exceptional properties: at low temperatures it is soft and bendy, but as soon as it is heated above a certain transition temperature, it instantly becomes hard and flexible like spring steel.
This Ferris Wheel can be driven by the AstroMedia Steam Engine (429.DMS) or the Stirling Engine (228.STM). It stands in the tradition of tin models meant to be driven by toy steam engines produced for the children of wealthy families at the end of the 19th century.
If you want to look straight into the sun, you should only do so with the proper eye protection.
Yes, with this cardboard kit you can actually build a working stirling engine. Just place the engine on a cup with boiling water and it will move silently for up to an hour! The kit comes complete with all necessary parts like laser-cut aluminium plates, low-friction PVC bearings, steel crank, and vinyl seal.
A steam engine made from cardboard, running with proper boiling steam - is that really possible? Oh yes!!!
See for yourself: this model not only looks great, it also works, happily chuff-chuffing away. The boiler, made from an aluminium tin, has a magnetic safety valve. The aluminium fire box underneath holds five tea lights. Both are enclosed in a safety cage made from galvanised wire mesh.
The very first steam engine was a spinning copper ball, invented by Hero of Alexandria in the first century. This swimming spin top uses the same principle. A tea light (not included) heats the water in the copper spiral and recoil from the steam makes the Gyro spin.
With these cast iron filings you can make magnetic fields visible! You can sprinkle the filings on a sheet of paper or cardboard and hold a magnet underneath, or you put them into a glass jar and hold the magnet against the glass.
Ages 3-7
Our soprano ocarina is tuned to C major and has a wonderful velvety tone. Like all ocarinas it is very easy to play and even comes with an introduction and some simple songs. Kit made from gold printed, pre-cut cardboard with moisture barrier.
Produces 3000°C hot sparks when struck with the enclosed tool or another sharp edged steel object (knife back). These sparks set fire to any dry tinder like paper or magnesium chips (see below) even in wet conditions. Can also be used for signalling in the dark.
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