The New Physics and Its EvolutionK. Paul, Trench, Trübner, 1907 - 344 pagini |
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Pagina ix
... Unit of wave- lengths preferable - The International Metre ( pp . 21-30 ) . § 3. The Measure of Mass : Distinction ... Unit of time the second - Alternative units proposed - Improvements in chronometry and invar ( pp . 34-37 ) . § 5. The ...
... Unit of wave- lengths preferable - The International Metre ( pp . 21-30 ) . § 3. The Measure of Mass : Distinction ... Unit of time the second - Alternative units proposed - Improvements in chronometry and invar ( pp . 34-37 ) . § 5. The ...
Pagina x
Lucien Poincaré. of Temperature : Fundamental and derived units - Or- dinary unit of temperature purely arbitrary - Absolute unit mass of H at pressure of 1 m . of Hg at 0 ° C.- Divergence of thermometric and thermodynamic scales -Helium ...
Lucien Poincaré. of Temperature : Fundamental and derived units - Or- dinary unit of temperature purely arbitrary - Absolute unit mass of H at pressure of 1 m . of Hg at 0 ° C.- Divergence of thermometric and thermodynamic scales -Helium ...
Pagina xiv
... unit of electricity or electrons ( pp . 242-249 ) . § 3. How Ions are Produced : Various causes of ionization - Moreau's experiments with alka- line salts - Barus and Bloch on ionization by phos- phorus vapours - Ionization always ...
... unit of electricity or electrons ( pp . 242-249 ) . § 3. How Ions are Produced : Various causes of ionization - Moreau's experiments with alka- line salts - Barus and Bloch on ionization by phos- phorus vapours - Ionization always ...
Pagina 20
... units of dimension and mass , and of the standards of the first order which are derived from them . If all measurable quantities , as was long thought possible , could be reduced to 20 THE NEW PHYSICS AND ITS EVOLUTION.
... units of dimension and mass , and of the standards of the first order which are derived from them . If all measurable quantities , as was long thought possible , could be reduced to 20 THE NEW PHYSICS AND ITS EVOLUTION.
Pagina 21
... unit chosen happen to vary simultaneously and in the same degree , we should perceive no change . Moreover , the unit being , by definition , the term of comparison , and not being itself comparable with anything , we have theoretically ...
... unit chosen happen to vary simultaneously and in the same degree , we should perceive no change . Moreover , the unit being , by definition , the term of comparison , and not being itself comparable with anything , we have theoretically ...
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absolute actinium action analogous appear atoms becomes bodies calorific cathode rays centimetre chemical Clausius complete conservation of energy considerable considered constant constitution contrary corresponding Crookes tube discovery dissociated domain Duhem Edition effected elastic electric electrolytes electromagnetic electrons endeavoured energy entropy enunciated equilibrium ether evolution exist experimental experiments fact fluids gaseous gases give given heat Hertz hydrogen hypothesis idea important ions J. J. Thomson kinetic theory known laws light liquid Lord Kelvin luminous Madame Curie magnetic field magnitude mass matter measure mechanics metals method metre millimetre molecular molecules moreover movement nature obtained optical ordinary particles particular phenomena phenomenon physicists physics possible precision present pressure principle of Carnot produced Professor propagation properties quantity question radiations radioactive radium reality regard relation remarkable researches scholars seems solid solution speed substances succeeded temperature thermodynamics tion transformations tube unit variations velocity vibrations vis viva wave-lengths waves
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Pagina 19 - I often say that if you can measure that of which you speak, and can express it by a number, you know something of your subject ; but if you cannot measure it, your knowledge is meagre and unsatisfactory.