Wollaston slide rule of chemical equivalents, 1814.

Made:
1814 in England
designer:
William Hyde Wollaston
and
William Hyde Wollaston
and
publisher:
William Cary

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Sliding scales of chemical equivalents, has Jan. 1 181 clearly on the bottom and several valuev inscribed on both
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Three sliding scales of chemical equivalents, all with same manuscripts marks, published by W Cary (devised by W H Wollaston?) all apparently of same pattern, one has 1814 date clearly, another has Jan. 1 1814 clearly.

Three sliding scales of chemical equivalents, all with same manuscripts marks, published by W Cary (devised by W H Wollaston?)

William Hyde Wollaston was a leading chemist and natural philosopher during the early 19th century. In 1813 he invented a chemical slide rule to illustrate his paper published the following year entitled ‘A synoptic scale of chemical equivalents’. He was interested in the ratio of weights of various substances used up in reactions. Positioning the slider with the weight of the substance set against it will show you the weights of other substances which will react with it. This fundamental ordering based on measurement paved the way for the periodic table of the elements, a magnificent tool in our understanding of the composition of the universe.

Details

Category:
Experimental Chemistry
Object Number:
1932-578
type:
slide rule
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • calculator
credit:
Miss Althea M. Wollaston

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