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9 See Eddington's humorous and at the same time serious treatment of this problem in his Philosophy of Physical Science. 10 Of the difference between external and internal ether-action more will be said in the concluding chapter. Pro Anima Thy functions are ethereal, As if within thee dwelt a glancing mind, Organ of vision! And a Spirit aëreal Informs the cell of Hearing, dark and blind.
The above statement, like others of Eddington's, has been Contested from the side of professional philosophy as logically untenable. Our own further discussion will show that it accords with the facts. 4 Both words, kinematics and kinetics, are derivatives of the Greek word kinein, to move. The term 'kinematic' is used when motion is considered abstractly without reference to force or mass.
Heisenberg's name has become known above all by his formulation of the so-called Principle of Indeterminacy. 2 See, in this respect, Faust's dispute with Mephistopheles on the causes responsible for the geological changes of the earth. 3 See also Eddington's more elaborate description of this fact in his New Pathways in Science.
When once thinking had started in this direction, it was electricity which once more gave it the strongest impulse to go even further along the same lines. Where we have arrived along this path is brought out in a passage in Eddington's The Nature of the Physical World.
Milly's daddy took Milly's flo'rs and they died," Milly had said. Never would Mrs Eddington leave her child, or forget Milly's daddy again. Yet, when the anniversary of poor Harry Eddington's death came round again, Milly had been for three-quarters of a year running about as of old; her mother had been for two months the wife of Major Walsh.
Of these utterances, Eddington's is at the present point of our discussion of special interest for us; for he outlines in it the precise field of sense-perception into which science has withdrawn in the course of that general retreat towards an ever more restricted questioning of nature which was noted by Heisenberg.
They had spent their honeymoon at Major Walsh's own place in Wiltshire, had stayed for another month in his London house, and they at last turned their steps in the direction of the home which had been Harry Eddington's, where his child had been left under the guardianship of the new Mrs Walsh's mother. "You used to complain of the dulness of the place and of how buried alive you were there.
No familiar conceptions can be woven round the electron; it belongs to the waiting list. The only thing we can say about the electron, if we are not to deceive ourselves, Eddington concludes, is: 'Something unknown is doing we don't know what.'4 Let us add a further detail from this picture of the atom, as given in Eddington's Philosophy of Physical Science.
He had died of heart disease; his child, it was now discovered, had a certain weakness of the heart. A superstitious feeling that she had not remembered him enough, and that this was her punishment, took possession of Mrs Eddington's brain. She remembered with remorse what had been occurring at the moment her child had fallen insensible among the primroses.
1 E. du Bois-Raymond: Investigations into Animal Electricity . Galvani published his discovery when the French Revolution had reached its zenith and Napoleon was climbing to power. 2 The above account follows A. J. von Oettingen's edition of Galvani's monograph, De viribus electricitatis in motu musculari. 4 Eddington's italics.
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