John Ashworth Ratcliffe, PhD

University of Cambridge

University of Cambridge, Cambridge, England, United Kingdom

Radioastronomy

(1902 - 1987)
http://www.purbeckradar.org.uk/biography/ratcliffe_jack.htm
https://www.npg.org.uk/collections/search/person/mp72696/john-ashworth-ratcliffe
He and his University of Cambridge group did much pioneering work on the ionosphere, immediately prior to World War II. He was one of many leading radio scientists who worked at the Telecommunications Research Establishment during WW2

Alexander Wood	research assistant	1920-1924	Cambridge
(https://royalsocietypublishing.org/doi/epdf/10.1098/rsbm.1988.0022)
Joseph Larmor	research assistant	1924-1927	Cambridge
(https://royalsocietypublishing.org/doi/epdf/10.1098/rsbm.1988.0022)
Edward Victor Appleton	grad student	1920-1924	Cambridge

John Flavell Coales	research assistant	1929	Cambridge (Computer Science Tree)
Arthur Henry Waynick	research assistant	1939	Cambridge
Maurice Wilkes	grad student		Cambridge (Computer Science Tree)
Joseph L. Pawsey	grad student	1935	Cambridge
Henry G. Booker	grad student	1936	Cambridge
Martin Ryle	grad student	1936-1939	Oxford
Ronald Newbold Bracewell	grad student	1949	Cambridge (E-Tree)
Basil Hugh Briggs	grad student	1952	Cambridge
Sidney Allan Bowhill	grad student	1954	Cambridge (Meteorology Tree)
Colin O Hines	grad student	1954	Cambridge
Henry Rishbeth	grad student	1957-1960	Cambridge

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Ratcliffe JA. (1975) The Early Ionosphere Investigations of Appleton and His Colleagues Philosophical Transactions of the Royal Society A. 280: 3-9
RATCLIFFE JA. (1965) Wave Propagation Through the ionosphere Nature. 207: 900-900
RATCLIFFE JA. (1964) Longest Radio Waves Nature. 203: 1209-1209
RATCLIFFE JA. (1963) Radio Wave Propagation Nature. 199: 940-941
Ratcliffe JA. (1956) The microscopic mechanism for the absorption of radio waves in the ionosphere Vistas in Astronomy. 2: 791-798
Booker HG, Ratcliffe JA, Shinn DH. (1950) Diffraction from an irregular screen with applications to ionospheric problems Philosophical Transactions of the Royal Society A. 242: 579-607
RATCLIFFE JA. (1949) The ionosphere and the propagation of radio waves. Nature. 164: 511-3
RATCLIFFE JA. (1948) Diffraction from the ionosphere and the fading of radio waves. Nature. 162: 9-11
Best JE, Ratcliffe JA. (1938) The diurnal variation of the ionospheric absorption of wireless waves Proceedings of the Physical Society. 50: 233-246
Appleton EV, Farmer FT, Ratcliffe JA. (1938) Magnetic double refraction of medium radio waves in the ionosphere [1] Nature. 141: 409-410