What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
The Scientific Writings of the Late George Francis Fitzgerald
George Francis Fitzgerald
No preview available - 2015
action analogy angle apply assume atoms axis bodies calculate chemical Clausius components condenser conduction conductor connexion consequently depends direction displacement currents distance dynamical effect elastic electric and magnetic electric charges electric current electric displacement electric force electrolysis electromagnetic electromotive electromotive force electrons electrostatic energy engines equations ether evidently experiments explain Faraday effect Fitz Gerald fluid galvanometer heat Helmholtz Hence Hertz hypothesis induction inertia investigation kinetic laws light liquid Lord Kelvin magnetic force matter Maxwell Maxwell's mechanical medium method motion moving nature number of molecules observed obtained oscillator osmotic pressure paper phenomena physical plane of incidence plane of polarization possible potential pressure produced Professor propagation quantities radiation rays reflection refraction refractive index represented rotation Royal Dublin Society scientific seems spherical harmonics superficial tension suppose surface temperature theory tion tube vector vector potential velocity vibrations vortex rings waves wheels Zeeman effect
Page 342 - And Nature, the old nurse, took The child upon her knee, Saying : ' Here is a story-book thy Father has written for thee.' 'Come, wander with me,' she said ' Into regions yet untrod ; And read what is still unread In the manuscripts of God.' And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
Page 490 - ... development of all. If anywhere there are efforts tending to curtail the fullest growth of the Negro, let these efforts be turned into stimulating, encouraging, and making him the most useful and intelligent citizen. Effort or means so invested will pay a thousand per cent interest. These efforts will be twice blessed— "blessing him that gives and him that takes.
Page 8 - B respectively, and assuming the cosine law of diffusion (ie the candle-power in any direction is proportional to the cosine of the angle between the direction and the normal to the surface...
Page 247 - Phil. Mag., May 1845, Vol. xxvi.) If we do so, however, we meet with innumerable other difficulties — insuperable without farther experimental investigation, and an entire reconstruction of the theory of heat from its foundation. It is in reality to experiment that we must look — either for a verification of Carnot's axiom, and an explanation of the difficulty we have been considering; or for an entirely new basis of the Theory of Heat.
Page 240 - It may be found that there is diffusion or it may be found that there are polarized distributions of fluid kinetic energy which are not unstable when the surfaces are fixed ; more than one such is known. Osborne Reynolds has pointed out another, though in my opinion less hopeful, direction in which to look for a theory of the ether. Hard particles are abominations. Perhaps the impenetrability of a vortex would suffice. Oliver Lodge speaks confidently of a sort of chemical union of two opposite kinds...
Page 275 - If an electro-magnetic wave, having magnetic force comparable to that near an ordinary electro-magnet, were producible, the power of the radiation would be stupendous. If we consider the possible radiating power of an atom by calculating it upon the hypothesis that the atomic charge oscillates across the diameter of the atom, we find that it may be millions of millions of times as great as Prof. Wiedemann has found to be the radiating power of a sodium atom in a Bunsen burner, so that, if there is...
Page 239 - ... one by which light is propagated, that non-conductors can, and probably always do, as Professor Poynting has taught us, transmit electro-magnetic energy. By means of variable currents energy is propagated into space with the velocity of light. The rotation of the earth is being slowly stopped by the diurnal rotation of its magnetic poles. This seems a hopeful direction in which to look for an explanation of the secular precession of terrestrial magnetism. It is quite different from Edlund's curious...
Page 248 - Meantime Rankine was attacking the problem in his own way, with one of those marvellous creations of the imagination of which it is so difficult to estimate the precise value.
Page 295 - Oliver Heaviside has the faults of extreme condensation of thought and a peculiar facility for coining technical terms and expressions that are extremely puzzling to a reader of his Papers. So much so, that there seems very little hope that he will ever attain the clarity of some writers, and write a work that will be easy to read.
Page 237 - This is all very well in mathematical formula, but, as in the case of light, we must consider what becomes of it after it has left the sun and before it reaches the earth, so every hypothesis assuming action in time really postulates a medium whether we talk about it or not. There are some difficulties surrounding the complete interpretation of some of Hertz's experiments.