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Letter from John W. Graham to Sarah Ann Eddington
EDDN/A/1/1 · Item · 3 Jan. [1899]
Parte de Papers of Sir Arthur Eddington


Grand Hôtel des Bergues, Genève
3. Jan 1898.

Dear Mrs. Eddington,

I sent you just one bit of my ideas abt. Stanley as soon as he left us. The rest must follow now.

His presence has been a great pleasure to us. You have got a boy mixed of most kindly elements, as perhaps Shakspeare might say {1}. His rapidly and clearly working mind has not in the least spoiled his character. I don’t know when I have had to do with so modest and gentlemanly a boy. It is a testimony to day schools and home training, (not, I am afraid, my favourite theory.)

His youth has, of course, been just a little against his making friends, but has not been fatal to it. In Clayton, & in Wood & Brown he has nice associates; but he seems more contented alone than most boys are.

His work is all that I expected, & more: & I feel altogether that he is “a precious youth” committed to my charge. I can realise to some extent what Margaret would feel like if she were left alone to bring up our own little Richard.

I remain
Your friend sincerely
John W. Graham


The writing-paper is engraved with illustrations of the hotel, etc. The year is wrong, as Eddington did not enter Owen’s College till October 1898 (see his Notebook).

{1} Graham evidently had in mind Antony’s encomium on Brutus at the end of Julius Caesar: ‘His life was gentle, and the elements | So mix’d in him that Nature might stand up | And say to all the world “This was a man!”’

‘Books | Sales and Receipts’
EDDN/D/1/3 · Item · 1914–44
Parte de Papers of Sir Arthur Eddington

(Pasted inside the back cover is a statement of Eddington’s account with the Clarendon Press in respect of sales of Stars and Atoms during the year ending 31 Mar. 1944.)

Account of an expedition to Principe
EDDN/C/1/3 · Item · [14 July x 30 Oct. 1919]
Parte de Papers of Sir Arthur Eddington

(This is an early version of part of a report to the Royal Society by the Joint Permanent Eclipse Committee. The latest date mentioned in it is 14 July 1919, and the report was received by the Society on 30 October and read on 6 November.)

‘The Cavendish Laboratory’
EDDN/C/1/6 · Item · [Oct. 1934 x Feb. 1935]
Parte de Papers of Sir Arthur Eddington

(This paper includes a description of Eddington’s visit to the Laboratory in Oct. 1934. W. E. Burcham described the circumstances of its composition as follows: ‘towards the end of 1934 Sir Arthur Eddington wrote a pamphlet describing the Cavendish and its achievements to form the basis of ‘an appeal to the friends of science and of Cambridge’. The pamphlet was published in Feb. 1935, and privately circulated to possible benefactors both within and outside Cambridge. See ‘The Cavendish High-voltage Laboratory 1935-39’, Notes and Records of the Royal Society of London, vol. liii, pp. 121-2. (The title appears under the heading ‘Miscellaneous’ in D2/3.))

Chapter VII: Wave Vectors
EDDN/B/1/9 · Item · July 1944
Parte de Papers of Sir Arthur Eddington

§ 66. Idempotency.
§ 67. Standard form of idempotent vectors.
§ 68. Spectral sets.
§ 69. Catalogue of symbolic coefficients.
§ 70. The wave identities.
§ 71. Matrix representation of E-numbers.
§ 72. Factorisation of E-numbers.
§ 73. Wave tensors of the second rank.
§ 74. Wave tensors of the fourth rank.
§ 75. Phase space.
§ 76. Relative space.
§ 77. Vectors in micro space.
§ 78. The quantum-classical analogy.

Chapter X: The Wave Equation
EDDN/B/1/12 · Item · Sept. 1944
Parte de Papers of Sir Arthur Eddington

§ 105. Field momentum.
§ 106. The gradient operator.
§ 107. Isostatic compensation.
§ 108. Wave equation of the hydrogen intracule.
§ 109. Solution of the wave equation.
§ 110. The interchange momentum.
§ 111. The two-frame transformation.
§ 112. Electromagnetic potentials.

Chapter VIII: Double Frames
EDDN/B/1/10 · Item · Aug. 1944
Parte de Papers of Sir Arthur Eddington

§ 79. The EF-frame.
§ 80. Chirality of a double frame.
§ 81. The interchange operator.
§ 82. Duals.
§ 83. The CD-frame.
§ 84. Double-wave vectors.
§ 85. The 136-dimensional phase space.
§ 86. Uranoid and aether.
§ 87. The Riemann-Christoffel tensor.
§ 88. The de Sitter universe.
§ 89. The tensor identities.
§ 90. The contracted Riemann-Christoffel tensor.
§ 91. States and interstates.
§ 92. The recalcitrant terms.

Chapter IX: Simple Applications
EDDN/B/1/11 · Item · Aug. 1944
Parte de Papers of Sir Arthur Eddington

§ 93. The metastable states of hydrogen.
§ 94. Neutrium and deuterium.
§ 95. Mass of the neutron.
§ 96. Double intracules.
§ 97. Comparison with field theory.
§ 98. Mass of the deuterium atom.
§ 99. Mass of the helium atom.
§ 100. The separation constant of isobaric doublets.
§ 101. Isotopic spin.
§ 102. Radii of nuclei.
§ 103. The nuclear planoid.
§ 104. Mass of the mesotron.

Chapter XI: The Molar Electromagnetic Field
EDDN/B/1/13 · Item · Sept. 1944
Parte de Papers of Sir Arthur Eddington

§ 113. Gauge transformations (molar theory).
§ 114. Action invariants.
§ 115. Gauge transformations (microscopic theory).
§ 116. Indices of wave tensors.
§ 117. Magnetic moments.
§ 118. Magnetic moment of the hydrogen atom.
§ 119. Magnetic moment of the neutron.

(There is no § 120.)