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 | Stirling Engine Kit  Ref: LH-StirlingKit
Build a fully-working Stirling Engine from this cardboard kit. The revolutionary concept of this engine was invented by Scottish Minister Robert Stirling in 1816. It works by moving air between the hot and cold ends of a displacement cylinder. As the air expands and contracts it is fed to the working cylinder that drives the engine. Any source of heat or cold can be used and this engine will run happily on a cup of hot tea or coffee.. Or place it on an ice pack to watch it run in the opposite direction. Stirling engines have been used where silent running is important and may become household objects as they are currently being developed as combined neat and power units to provide electricity and heating for individual homes. The kit comes with clear english assembly instructions and diagrams, historical background and includes: 3 sheets of cardboard cutouts, laser cut aluminium plates, assorted metal fittings and a latex glove. Assembled height 16.5cm x 12.6cm wide.
Price: £30.00 (Including VAT at 20%)
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 | Hand-held Spectroscope Ref: LH-SPECTROSCOPE
View the spectrum of light sources such as the Sun, incandescent and fluorescent lights to see continuous and line spectra. This simple kit includes a 1000 line/mm transmission grating, wavelength scale and magnifier. It assembles to make a very effective spectroscope, ideal for personal amusement or demonstration.
Price: £9.50 (Including VAT at 20%)
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 | Camera Obscura Ref: LH-OBSCURA
Make yourself a camera obscura similar to the one that Canaletto used. Described as 'the mother of all cameras' the camera obscura originally used a small hole in a wall or window to admit light into a darkened room where an inverted image of the outside world appeared on the opposite wall. The small hole was later replaced by a lens to collect more light and produce a brighter image. Boxes with viewing screens were an alternative form. Venetian artists such as Canaletto used the camera obscura to help with their famous views. This kit assembles to produce a camera similar to Canaletto's so you can view and sketch the outside world. The kit contains Edler gold print card parts, lens, mirrors, clear window and tracing paper.
Price: £25.00 (Including VAT at 20%)
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 | Candle-powered Steam Top Ref: LH-STEAMTOP
Build-yourself a 1st-century steam engine. This simple steam engine was invented by Hero of Alexandria in the 1st Century AD. Our version uses a candle to heat water in a copper pipe which is expelled to cause rotation. Condensation then draws fresh water into the pipe and the cycle repeats, several times per second. The top will continue to rotate as long as the candle burns and it is floating on water. The kit contains a 10 mm copper tube with pre-drilled holes and spiral-annealed legs, together with a bending tool for the pipe ends and an 80 mm diameter cork disc. (Candle not included).
Price: £9.95 (Including VAT at 20%)
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 Galileo's Telescope In 1609 Galileo Galilei perfected a telescope introduced a year earlier in Holland, and directed it to the starry sky. He discovered craters on the moon, the phases of Venus and the moons around Jupiter. These were a scientific sensation and created a new astronomy, changing forever the way we view our world. Now you can build an historically faithful replica of the one remaining telescope that can be attributed to Galileo with certainty. It is the same size and power as telescopes used at that time and is punched from card with five-colour printing. The original was made from leather with a decorated gold embossing ceremonial copy of Cosimo II de Medici, (12 May 1590 - 28 February 1621) who ruled as Grand Duke of Tuscany from 1609 to 1621. The length is 78cm and it uses glass lenses to magnify 12 times. |
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 | The Little Galileo Telescope Kit Ref: LH-Galileosmall
A smaller version of the Galileo Telescope Kit but especially suitable for children to make and use. Its length is 20 cm and it has 6x magnification similar to the great Italian scientist Galileo's orginal telescope in the beginning of the 17th Century The kit is die-cut for easy assembly and comes complete with OPTI * Acrylic Media -Lenses No. 1 and No. 8. A great little gift for a child. This makes a popular activity for the classroom. We offer a school's discount for quantity - please call us for details.
Price: £5.00 (Including VAT at 20%)
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