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apparatus atom Brit C. T. R. Wilson Camb Cambridge cathode particle cathode rays Cavendish Laboratory Clark Cell coil condensation corpuscle course Demonstrator determination effect electric discharge electric field Electricity and Magnetism electricity through gases electrified electrodes electrolytic electromagnetic electromotive force elementary Emmanuel College experiments G. F. C. Searle H. A. Wilson hydrogen investigations ionisation ions produced J. J. Thomson John's College lectures liquid Lord Rayleigh magnetic field mass mathematical Maxwell Maxwell's measurements metal method Michaelmas molecules motion Natural Sciences Tripos negative ions Newnham College nuclei observed Ohm's law paper phenomena Phil platinum polarisation positive Practical Physics Proc Camb Professor of Physics Professorship properties quantity R. T. Glazebrook radiation radio-active ratio resistance Rontgen Rontgen Rays Rutherford showed solutions teaching temperature theory tion Townsend Trans Trinity College tube ultra-violet light vapour velocity W. N. Shaw wire x-rays
Page 176 - The explanation which seems to me to account in the most simple and straightforward manner for the facts is founded on a view of the constitution of the chemical elements which has been favourably entertained by many chemists : this view is that the atoms of the different chemical elements are different aggregations of atoms of the same kind.
Page 18 - ... quantities with which she has long been familiar, she is preparing the materials for the subjugation of new regions, which would have remained unknown if she had been contented with the rough methods of her early pioneers. I might bring forward instances gathered from every branch of science, shewing how the labour of careful measurement has been rewarded by the discovery of new fields of research, and by the development of new scientific ideas.
Page 17 - This characteristic of modern experiments — that they consist principally of measurement — is so prominent that the opinion seems to have got abroad that in a few years all the great physical constants will have been approximately estimated, and that the only occupation which will then be left to men of science will be to carry on these measurements to another place of decimals.
Page 14 - Such indeed is the respect paid to science, that the most absurd opinions may become current, provided they are expressed in language, the sound of which recals some well-known scientific phrase. If society is thus prepared to receive all kinds of scientific doctrines, it is our part to provide for the diffusion and cultivation, not only of true scientific principles, but of a spirit of sound criticism...
Page 158 - Chemical decomposition is not to be considered merely as an accidental attendant on the electrical discharge, but as an essential feature of the discharge, without which it could not occur.
Page 176 - If, in the very intense electric field in the neighbourhood of the cathode, the molecules of the gas are dissociated and are split up, not into the ordinary chemical atoms, but into these primordial atoms, which we shall for brevity call corpuscles; and if these corpuscles are charged with electricity and projected from the cathode by the electric field, they would behave exactly like the cathode rays.
Page 17 - Experiments of illustration may be of very different kinds. Some may be adaptations of the commonest operations of ordinary life ; others may be carefully arranged exhibitions of some phenomenon which occurs only under peculiar conditions. They all, however, agree in this, that their aim is to present some phenomenon to the senses of the student in such a way that he may associate with it some appropriate scientific idea. When he has grasped this idea, the experiment which illustrates it has served...
Page 177 - Thus on this view we have in the cathode rays matter in a new state, a state in which the subdivision of matter is carried very much further than in the ordinary gaseous state: a state in which all matter, - that is, matter derived from different sources such as hydrogen, oxygen, and carbon, - is of one and the same kind; this matter being the substance from which all the chemical elements are built up.
Page 55 - ... the centimetre as the unit of length, the gramme as the unit of mass, and the second as the unit of time.
Page 337 - PEARSON, DOROTHY B. (1908-9), Girton College ; Chemistry and Physics Mistress at King Edward VI. 's High School for Girls, Birmingham. PHILLIPS, PERCY (1904-6), University of Birmingham ; Emmanuel College; Professor of Physics, Royal Veterinary College, London. POYNTING, JOHN HENRY, FRS (1879-80), Trinity College; Professor of Physics and Dean of the Faculty of Science, University of Birmingham. PRINGSHEIM, PETER (1907-8), Universities of Munich and Gottingen ; Trinity College; Assistant Demonstrator...