293:. They and M A F Barnett developed methods to understand why ‘fading’ of radio signals from a fixed transmitter occurred during hour of darkness. In 1927 Ratcliffe was made head of a group in the Cavendish Laboratory known as the radio ionosphere research group. They studied how radio waves were reflected from the ionized layer in the upper atmosphere (previously called the
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304:(CH), covering the eastern and southern coasts of Britain. Physicists from the Cavendish and elsewhere were assigned to spend a month at one of the stations: Ratcliffe was sent to the one near Dover, but was soon made part of the
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and some others from TRE joined them and decided to follow up the discovery of radio emission from the sun. Ryle was in charge of a section concerned with
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At the end of the conflict, Ratcliffe was back at the
Cavendish, which had been enlarged, enabling him to restart research with a larger group.
316:(CHL), used to detect aircraft flying at altitudes below those detectable by CH stations. His work took him to various locations during the war:
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on 28 August 1930. They had two daughters, Margaret and
Elizabeth. Elizabeth died in 1966, and Nora in 1977.
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248:(known to intimates as "Jar"; 12 December 1902 – 25 October 1987) was an influential British
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At the outbreak of war in 1939, dozens of radar stations formed a network, known as
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Ratcliffe died at his home, 193 Huntingdon Road, Cambridge, on 25 October 1987.
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In
October 1960 Ratcliffe left Cambridge to take up the post of director of the
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This article is about the
British radio physicist. For the American actor, see
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That year
Ratcliffe started research on radio wave propagation under
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and graduated in natural sciences with first-class honours in 1924.
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Astronomy
Transformed: The Emergence of Radio Astronomy in Britain
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Recipients of the Gold Medal of the Royal
Astronomical Society
555:"John Ashworth Ratcliffe. 12 December 1902-25 October 1987"
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People educated at Bacup and
Rawtenstall Grammar School
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Biographical
Memoirs of Fellows of the Royal Society
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where he was in charge of a new form of CH known as
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983:Presidents of the Cambridge Philosophical Society
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402:1953 The Holweck medal and prize (jointly with
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632:(online ed.). Oxford University Press.
943:Officers of the Order of the British Empire
606:Grace’s Guide to British Industrial History
928:Alumni of Sidney Sussex College, Cambridge
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469:1972 Honorary Fellow, Institute of Physics
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539:(Supplement). 12 June 1965. p. 5474.
306:Telecommunications Research Establishment
923:Academics of the University of Cambridge
602:"Mitchells, Ashworth, Stansfield and Co"
629:Oxford Dictionary of National Biography
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587:David O. Edge, Michael Joseph Mulkay,
358:John Ratcliffe married Nora Disley at
272:Bacup and Rawtenstall Secondary School
958:People educated at Giggleswick School
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665:of the Jack Ratcliffe papers at the
458:International Union of Radio Science
938:Companions of the Order of the Bath
447:1966 Royal Medal, the Royal Society
411:Royal Institution Christmas Lecture
57:© National Portrait Gallery, London
968:Presidents of the Physical Society
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861:Prince Philip, Duke of Edinburgh
489:University of Kent at Canterbury
430:Sidney Sussex College, Cambridge
284:Sidney Sussex College, Cambridge
282:(1919–1921). In 1921 he entered
108:Sidney Sussex College, Cambridge
553:Budden, Kenneth George (1988).
495:Indian National Science Academy
892:Ralph Walter Graystone Wyckoff
626:"Pease, (Rendel) Sebastian ".
463:1971 Guthrie Medal and Prize,
380:1950 Ambrose Fleming Premium,
1:
404:Société Française de Physique
360:St Nicholas Church, Newchurch
948:Fellows of the Royal Society
820:John Ashworth Ratcliffe
646:UK public library membership
409:1953 Invited to deliver the
397:Institute of Radio Engineers
55:John Ashworth Ratcliffe, FRS
800:Leonard Bessemer Pfeil
221:Other notable students
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480:Royal Astronomical Society
474:American Geophysical Union
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667:Churchill Archives Centre
484:1977 Honorary Fellow, IEE
456:1966 Honorary President,
392:1952 Duddell Premium, IEE
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740:Arthur Herbert Cook
514:RATCLIFFE, John Ashworth
487:1979 DSc honoris causa,
276:Heversham Grammar School
745:Sydney John Folley
415:The Uses of Radio Waves
350:. He resigned in 1966.
237:John Ashworth Ratcliffe
167:University of Cambridge
43:John Ashworth Ratcliffe
27:British radio physicist
18:John Ashworth Ratcliffe
825:Thomas Alan Stephenson
815:William John Pugh
638:10.1093/ref:odnb/94386
591:, Wiley, 1976, p. 456.
574:10.1098/rsbm.1988.0022
428:1962 Honorary Fellow,
419:1958 President of the
344:Radio Research Station
324:, back to Dundee, and
263:Ratcliffe was born in
179:Radio Research Station
835:Petrus Johann du Toit
805:James Arthur Prescott
795:Albert Neuberger
440:1965 Vice President,
877:Herbert McLean Evans
830:William Homan Thorpe
465:Institute of Physics
978:Royal Medal winners
725:Carlyle Smith Beals
450:1966 President, IEE
395:1953 Fellow of the
386:1951 Fellow of the
270:He was educated at
211:Ronald N. Bracewell
118:Ionospheric physics
933:British physicists
536:The London Gazette
453:1966 Faraday Medal
369:Honours and awards
280:Giggleswick School
207:Joseph Lade Pawsey
963:People from Bacup
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770:Joseph Hutchinson
755:Geoffrey Gee
644:(Subscription or
478:1976 Gold Medal,
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195:Doctoral students
185:Academic advisors
149:Scientific career
16:(Redirected from
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845:Alfred Ubbelohde
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163:Institutions
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90:(1987-10-25)
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918:1987 deaths
913:1902 births
840:Alan Turing
611:13 November
531:"No. 43667"
518:Who Was Who
348:Ditton Park
333:Martin Ryle
225:Martin Ryle
127:Nora Disley
907:Categories
854:Statute 12
780:David Lack
648:required.)
501:References
302:Chain Home
69:1902-12-12
730:John Boyd
663:Catalogue
322:Petersham
308:(TRE) in
259:Biography
253:physicist
98:, England
96:Cambridge
79:, England
709:elected
143:See list
132:Children
870:Foreign
718:Fellows
711:in 1951
705:of the
703:Fellows
567:: 670.
326:Malvern
318:Swanage
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460:(URSI)
354:Family
310:Dundee
175:Dundee
155:Fields
140:Awards
124:Spouse
444:, USA
399:, USA
265:Bacup
250:radio
77:Bacup
613:2020
85:Died
63:Born
634:doi
569:doi
413:on
382:IEE
376:OBE
346:at
246:FRS
243:CBE
173:in
171:TRE
909::
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545:^
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