Scope and Contents

The material consists of 4 draft notes by Edward Appleton: ‘The effect of the earth's magnetic field in the case of long-wave reflection', 1 page; 'Resume of results', 1 page; ‘Notes on the Reflection Coefficient’, 2 pages; and ‘Discussion of Results’, 3 pages for section 6 of a paper, on downcoming waves, no date, c. 1925-1943.

Scope and Contents

The material consists of 5 draft notes of papers by Edward Appleton: Note on Magneto-ionic Theory', 2 pages; 'Note on Splitting of Echos', 1 page; ‘Special case’, 1 page; ‘Field equations’, 3 pages; and ‘Calculation of Magneto-ionic Parameters', 1 page, no date, c. 1925-1943.

Scope and Contents

The material consists of a report, 'Geomagnetic co-ordinates for the whole earth', by A.G. McNish, dated 1936.

Scope and Contents Army notebook, inscribed on cover 'E. V. Appleton ii Lieut [Lieutenant] R. E. Electricity Notes' , c.1914-1921.Both ends of the item are used. At the front of the notebook, there are notes on electricity and magnetism, perhaps for lectures during First World War. In the middle, there is a sequence of pages (some numbered) of experiments on 'Oscillator with Leaking Grid Condenser', at Cambridge, 1920-21 (not all in Appleton's hand). At the rear of the notebook, there are press-cuttings on...

Scope and Contents

'Changes made in magneto-ionic theory by the introduction of the ⅓'. The material consists of notes for a paper by Edward Appleton, no date, c. 1925-1943.

Scope and Contents

Correspondence and reports from J.S. Hey to Edward Appleton, dated 1946-1947. The material is mainly on the Giacobinid Shower [a meteor shower, now known as the October Draconids], and including photographs, and O.R.G. Report 342 [Army Operational Research Group].

Scope and Contents

Correspondence between Hendrik A. Lorentz and Edward Appleton, dated 1925. The material consists of a 12 letter including calculations and a 10 page manuscript draft on 'Propagation of electromagnetic waves in ionized gas under the influence of a constant magnetic field H'.

Scope and Contents

Correspondence from A.C.B. Lovell to Edward Appleton, dated 1947-1948. The material includes reports on research by Lovell's team at Manchester, and a note by Lovell on the importance of studying meteor trails in the southern hemisphere.

Scope and Contents

The material consists of correspondence from C. Hoffmeister to Edward Appleton, dated 1948 and from H. Spencer Jones to Edward Appleton, dated 1945. The correspondence from Spencer Jones is possibly the 'the Astronomer Royal's letter' mentioned in Coll-37/C.226.

Scope and Contents

The material consists of correspondence from C. Macleroy to Edward Appleton, dated 1947. Macleroy was an amateur astronomer.