Squirrels find the sight of fully stocked feeders hard to resist but...
Our high-capacity Conqueror Feeders are ideal for gardens with large...
Set of three files (each fine and medium), ideal to smooth and clean edges and burrs of our cardboard kits. Also suitable for wood and soft plastic.
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 - download below Size: 22 x 22 x 22 mm. Length: 55 mm Suitable for children.
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.
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.
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...
Made from natural hail, Evoco brushes are the perfect all-round brush for many model and hobby uses, keeping their shape and quality long after their first use. Also includes a small tin of paint suitable for Astromedia reversing goggles dove prism.
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. Pack of 20 sheets, 140 x 190 mm
From the 17th century on magic lanterns made a huge impression on fair ground spectators. This is a kit for an elegant and fully functional cardboard replica in original size.
All our modern cameras have one common ancestor - The Camera Obscura: the light of the outside world falls through a pinhole onto the opposite wall of a room and produces an upside-down picture. In the 16th century the camera obscura was greatly improved by an objective lens, which produced much brighter pictures.
A small sensation for a small price: With this kit you can build a fully functioning zoom microscope with a variable magnification of 20x to 40x! The optical system, comprising 4 high quality acrylic lenses, is computer calculated and produces a sharp, colour-corrected image.
With this easy to build spectroscope you can examine the spectrum of any light source: glowing bodies (sun, incandescent light bulb), fluorescent lamps, etc. On the nano-meter scale you can read the wave length to 5 nm accuracy.
In the current hype for 3-D effects and movies it is easily forgotten that the basic principles for these have already been laid down 180 years ago by the English scientist Charles Wheatstone.
Alan Davies and Phill Jupitus try out upside down goggles - QI Series N Episode 8: Preview - BBC Two These amazing Reversing Goggles allow you to view the world upside down! The plastic goggles hold two Dove prisms, which invert the image. Available in: Ready to use or Kit form - Selection on Right