A fascinating gadget: wherever this black film is warmed up to 28°C it changes its colour to red. If the temperature rises above that, the colour changes to orange, yellow, green, blue, and purple. At 34°C it turns black again.
List of products by brand AstroMedia
AstroMedia is famous for their beautiful cardboard kits of scientific instruments and educational models that really work
A special egg timer: the sand doesn’t land on a uniform hill, but forms strange structures!
In a normal egg timer the sand always forms a flat cone onto whose tip the sand falls from above. This sand in this egg timer does the same, until you stand it in its wooden stand.
A rainbow for indoors! This large crown glass prism projects beautiful spectral colours into your room.
Hang the prism in a south-west or south-east facing window. When the low standing sun shines through the prism, it projects fields of spectral colours sideways into the room. A slight spin of the prism makes them dance around beautifully.
Set of 20 all-purpose permanent magnets made from a ceramic compound of iron oxide (ferrite). Ideal for homemade fridge magnets or for experiments with our iron filings (see above).
Height: 4mm, Diameter: 8mm
The Storm Glass Barometer came into general use during the early 1700s. Sailors attached this instrument to the mast of their ship and by interpretation of the constantly changing crystal formations within, relied upon it to forecast the weather for nearly 250 years.
A very special photographic paper from the early days of photography. Just put objects or negatives on the paper and expose it to the sun light. The outlines of the objects will show up as a silhouette.
Developing and fixation with tap water and without the need of a dark chamber. Made from non-poisonous & recycled paper.
Pack of 10 sheets, 215 x 280 mm nearly A4 size (which is 210x297mm)
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.
Pre-punched kit with gold, black, red, blue, and white printing.
Construction time: 8-12 hours
Includes: planet spheres, axles, and PVC bearings.
Height: 34cm, Diameter: 33cm
The Desktop Planetarium is a beautiful instrument and showpiece. But it is also a very useful teaching tool. If you are planning on transporting your valuable Planetarium to different venues, it is helpful if you can take it apart and transport it flat.
A world premiere: the first ever fully functional cardboard orrery! It demonstrates the movements of Mercury, Venus, Earth and Moon around the Sun
After lots of use the belts of the orrery can become brittle. Sunlight and over-stretching can speed up this process
Cut-out sheet for a dome-shaped star chart with distortion-free depiction of all stars and constellations visible in the northern sky down to latitudes of 40ºN. Includes date and time markers to simplify locating stars and constellations
If you want to look straight into the sun, you should only do so with the proper eye protection.
Literally translated a kaleidoscope is a “beautiful-shape-to-look-at”. Already known by the Greeks , it was re-invented in 1816 by David Brewster. The appeal of this beautiful kit is that you can change the filling of the viewing chamber to produce the most wonderful patterns. Complete with lens and mirrors
A kit for a prism made from acrylic glass. Cast acrylic glass blank with all necessary polishing material to produce a highly transparent prism, instructions included.
Suitable for children.