Penney, William

Consider the simplest possible case, a monatomic crystalline solid. The potential at each lattice site is represented by a single square well in the Kronig-Penney model (Kronig and Penney, 1931) by Ralph Kronig (1904-1995) and William G. Penney (1909-1991). For a perfect monatomic crystaHine array (Fig. 7.3a), all the potential... 

Anne Young, John Penney, Zane Hollingsworth - for use of computer equipment Williams and Williams Publishing/Text Enhancement Robert Paretti Alice Olson... 

The boxes of excelsior Frank Oppenheimer had set out, and the pine boards, also recorded the coming of the light they were charred beyond 1,000 yards, slightly scorched up to 2,000 yards. At 1,520 yards— nine-tenths of a mile—exposed surfaces had heated almost instantly to 750°F. William Penney, the British physicist who had studied blast effects for... 

When atomic energy was moved out of the Ministry of Supply to become an independent organisation, the AEA, it was headed hy a Chairman. The first two were Edwin Plowden and Roger Makins, two of the class of administrators thrown up by the war. They were followed by William Penney. 

Christopher Hinton and William Penney. Each had extremely able assistants, but there is no doubt the programme would have not achieved anything near as much as it did, in the time that it did, without these three. (General Morgan referred to them as the bold bad barons .)... 

Makins was also a senior Whitehall figure. He had been Ambassador to the USA and Joint Permanent Secretary at the Treasury before being appointed to the chair of the AEA. Makins was succeeded by William Penney. 

Lord Sherfield (1994). William Ceorge Peimey, O.M., K.B.E. Baron Penney of East Hendred. 24 June 1909-3 March 1991 , Biographical Memoirs of Fellows of the Royal Society 39, 282-302. 

Penney and his assistant, William Cook, kept the Ministry of Defence back in the UK in touch by means of telegrams, some of which are quite illuminating. At the time (August 1958), Aldermaston was carrying out further tests at Christmas Island. A 3 megaton warhead had been successfully exploded, and the further series of tests were to refine the various designs, and also to test devices which would be immune to neutron radiation — one way in which warheads might be disabled. 

The operation of the pile during an anneahng was left to the judgement of the pile physicist. As the report compiled by Sir William Penney s board of inquiry," written soon after the 1957 accident, put it ... 

It was essential that the cause of the fire be estabUshed as quickly as possible. By 15 October, a coimnittee of enquiry bad been set up with Sir William Penney as Chairman. Its terms of reference were to investigate the cause of the fire at Wind-scale No. 1. Pile on 10th October, 1957, and the measures taken to deal with it and its consequences. The other members of the board were Sir Basil Schonland, the Deputy Director of Harwell, Professor JM Kay of Imperial College London, and Professor J Diamond of Manchester University. Kay and Diamond were both... 

TNA PRO AB 86/25. Windscale Accident Inquiry Report of the Inquiry, with papers and correspondence belonging to Sir William Penney. Letter from Dr MacLean to the Medical Research Council, 31 October 1957. 

TNA PRO AB 86/26. Windscale Accident Inquiry papers and correspondence belonging to Sir William Penney. 

Lord Portal becomes Controller of Production (Atomic Energy). William Penney appointed Chief Superintendent, Armament Research. 

Sir William Penney succeeds Sir Roger Makins as Chairman of... 

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