Dr J D Cockcroft listening for atomic disintegration
Dr John D Cockcroft listening for sounds indicating atomic disintegration brought about by the bombardment with high-velocity protons of the lithium nucleus, which appears to break up into two helium nuclei. Physicists Cockcroft and E T S Walton developed the Cockcroft-Walton accelerator to artificially accelerate atomic particles to high energies, to enable them to observe the results of splitting the atom.
© Illustrated London News Ltd/Mary Evans
18th Century Laboratory
Though the 'enlightenment' is revolutionising science, this lab resembles an alchemist's workplace : books by Paracel- -sus and Boerhaave are on the shelves. The shop is beyond.
© Mary Evans Picture Library
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Underwater house, Plymouth
A female physicist multitasking (reading a magazine whilst knitting) in Sealab II, Britain's first permanent underwater laboratory, 30 feet below the waves off the coast of Plymouth, Devon. A couple of years after the expedition to Paradise Bay (see Underwater House Malta), David Baume from Enfield College of Technology and his team of sub-aqua enthusiasts made another attempt to construct an underwater home, this time off a breakwater in the middle of Plymouth Sound. Instead of using rubberised fabric, the new structure featured a massive cylindrical steel tank. This was lowered into the harbour and weighed down with several tons of pig iron ingots. These were lowered beneath the tank by means of a fairly primitive pulley system and then had to be manhandled off the trolley and positioned under the house. The water was almost pitch dark, extremely dirty and very cold. It took more than 200 dives to complete the operation and ensure that, when filled with air, the cylinder would stay on the bottom of the harbour rather than rise to the surface and turn turtle, with potentially fatal consequences for those inside. But finally the underwater house was ready for occupancy and fitted with the special air scrubber that David and his team had developed to ensure the air remained fresh. Several members of the team spent considerable periods of time living beneath the waves, turning the workbench into a bunk bed for overnight stays. Date: early 1970s
© Mary Evans Picture Library/DAVID LEWIS HODGSON