Mathematics
On Display
The Sinclair Executive Electronic Pocket Calculator (cutaway for exhibition) was the first electronic pocket calculator that could really fit into a pocket. Clive Sinclair (b. 1940) was able to achieve this by reducing the power input demanded by the
La Multi, prototype of French calculating device based on Napier's bones, seven figures, c. 1920. This is a prototype of an instrument which did not prove successful. Napier's bones, a calculating device invented by John Napier in 1617, allowed the u
A single surface glass vessel made by Alan Bennett in Bedford, 1995. It consists of three Klein bottles sharing an inlet tube which when cut produces three pairs of single-twist Mobius strips. A Klein bottle is a surface which has no edges, no outsid
A single surface model made in glass by Alan Bennett in Bedford, 1995. It consists of a Klein bottle with three loops, one of which has been cut away and sectioned to form a pair of single twist Mobius strips. A Klein bottle is a surface which has n
A single surface model made in glass by Alan Bennett in Bedford, United Kingdom. It consists of a Klein bottle with three inlet tubes, one of which has been cut out and sectioned to produce a pair of single twist Mobius strips. A Klein bottle is a su
A single surface model made by Alan Bennett in Bedford, 1995. It consists of three Klein bottles set inside each other sharing a common loop. When cut this gives a pair of single-twist Mobius strips. A Klein bottle has no edges, no outside or inside
Surveyor's sector, Italian, early 17th century, engraved "Adam Heroldt fecit Romae". The sector was invented independantly by Galileo and Thomas Hook at the end of the 16th century. It primarily measures proportions and can contain lines concerning t
Chuckrum board with 108 small coins.This board was used to count 100 small 'chuckrum' coins rapidly by spreading them over the surface to fill the holes.
Little Professor' calculator, children's working educational toy / game, 1980. Electronic calculators were now low cost available items which could be targetted at children and those with straightforward requirements. This example was exhibited in th
A single surface model made by Alan Bennett in Bedford, 1995. It consists of a parallel-sided coil with remote return tube with the inlet and singularity at the same end, which when theoretically cut gives a pair of 17-twist Mobius strips. A Klein bo