Introduction to Contemporary PhysicsMacmillan, 1926 - 453 pagine |
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alpha-particles amount angle angular momentum anode argon atom-model atomic number atomic weight axis Balmer series beam bombarding cathode Chapter charge-to-mass ratio chemical circular orbits column corresponding curve dark space deflections determined discharge distance doublet droplet effect elec electric field electron-stream electrons elements ellipse emitted energy-values equal equation equivalent volts excited experimental experiments fact fieldstrength frequency gases helium atom hydrogen atom impacts instance integer multiple interpreted inverse-square ionized atom ionized helium ionizing-energy ionizing-potential ions isotopes J. J. Thomson kinds of ions kinetic energy line-series lines magnetic field magnetic moment mass measurements mercury metal method molecules normal nuclear atom-model nucleus of charge observed particles Periodic Table phenomena physics plate positive ions potential properties quantity quantum quantum-number radiation resonance-potential revolving scattered sequence sodium space-charge spectra spectrum speed Stationary supposed theory tion transitions trons vapor various voltage wavelength X-ray Zeeman effect
Brani popolari
Pagina 30 - He 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 11 12 13 14 15 16 17 18 Na Mg Al Si P S Cl Ar 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn...
Pagina 108 - THE invaluable agent of our best knowledge of the environing world, and yet itself unknown except by inference; the intermediary between matter and the finest of our senses, and yet itself not material ; intangible, and yet able to press, to strike blows, and to recoil ; impalpable, and yet the vehicle of the energies that flow to the earth from the sun — light in all times has been a recognized and conspicuous feature of the physical world, a perpetual reminder that the material, the tangible,...
Pagina 130 - It is as if one dropped a plank into the sea from a height of 100 ft. and found that the spreading ripple was able, after travelling 1,000 miles and becoming infinitesimal in comparison with its original amount, to act upon a wooden ship in such a way that a plank of that ship flew out of its place to a height of 100 ft.
Pagina 38 - Sans doute, si nos moyens d'investigation devenaient de plus en plus pénétrants, nous découvririons le simple sous le complexe, puis le complexe sous le simple, puis de nouveau le simple sous le complexe, et ainsi de suite, sans que nous puissions prévoir quel sera le dernier terme.
Pagina 109 - Over a rather long period of years, it was indeed generally regarded as perfectly intelligible. The famous battle between the corpuscular theory adopted by Newton, and the wave-theory founded by Descartes and Huyghens, died out in the earlier years of the nineteenth century with the gradual extinction of the former. The history of optics in the nineteenth century, from Fresnel and Young to Michelson and Rayleigh, is the tale of a brilliant series of beautiful and striking demonstrations of the wave-theory,...
Pagina 29 - Nd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36...
Pagina 116 - Honour for this guidance belongs chiefly to Einstein. Where Planck in 1900 had said simply that bound electrons emit and absorb energy in fixed finite quantities, and shortly afterwards had softened his novel idea as far as possible by making it apply only to the act of emission, Einstein in 1905 rushed boldly in and presented the idea that these fixed finite quantities of radiant energy retain their identity throughout their wanderings through space from the moment of emission to the moment of absorption....
Pagina 30 - Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg...
Pagina 348 - ... permitted" orbits, and to no others, so that by these features the permitted orbits are set apart from all the rest. Inversely, anyone who is told what these features are, and who is sufficiently adept in dynamics, can trace all the orbits which display them and calculate the energy-values for these orbits and so predict the energyvalues of all of the Stationary States of an atom consisting of a nucleus and a single electron. Such orbits are known as quantized orbits. The rules...