Record

Reference numberPP/8/23/2
Previous numbersPP/40/28
LevelFile
TitleDiagram, experimental equipment by J J [Joseph John] Thomson and R [Richard] Threlfall
Date1886
DescriptionA diagram in black ink, with parts labelled A-H, showing the experimental equipment used by Thomson and Threlfall in their experiments on the production of ozone. The experimental setup is described in the paper as thus: 'ABC is a box made of flat pieces of glass about 1/16th of an inch thick, fastened together with paraffin; into the box two glass tubes, G and H, are inserted, the air entering the box through G, and leaving it through H. Against one side of the box a glass bottle, D, with flat sides, is placed and filled with water containing a little sulphuric acid, this serves as one electrode; the other electrode is a blackened tin plate, E, placed against the opposite side of the box, the distance between the electrodes being an inch and a half [...] The air entered the box through the tube G, having previously passed through a series of tubes and bottles filled respectively with phosphorous pentoxide, pumice moistened with sulphuric acid, and caustic potash; it was also freed from dust by passing through a tube containing a plug of cotton-wool. After passing through the box it bubbled through a test-tube, F, containing an iodide of potassium and starch solution, pieces of filter-paper moistened with this solution were also fastened to the sides of the box.'

Subject: Physics / Electricity / Scientific apparatus and equipment

A print of this diagram was published in volume 40 of the Proceedings of the Royal Society alongside the paper 'Some experiments on the production of ozone'.
Extent1p
FormatDiagram
Physical descriptionInk and graphite pencil on paper
Digital imagesView item on Science in the Making
Access statusOpen
Related materialDOI: 10.1098/rspl.1886.0047
Fellows associated with this archive
CodeNameDates
NA8288Thomson; Sir; Joseph John (1856 - 1940); physicist1856 - 1940
NA6235Threlfall; Sir; Richard (1861 - 1932); physicist and chemical engineer1861 - 1932
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