Illustrations of the C.G.S. System of Units: With Tables of Physical ConstantsMacmillan and Company, 1891 - 220 páginas |
Dentro del libro
Resultados 1-5 de 23
Página vii
... magnetic quantities in terms of K and p Under this head I have to acknowledge kind assistance from Professors Rücker and Fitzgerald . 6. A table of values of the magnetic elements at a number of stations in the British Isles , selected ...
... magnetic quantities in terms of K and p Under this head I have to acknowledge kind assistance from Professors Rücker and Fitzgerald . 6. A table of values of the magnetic elements at a number of stations in the British Isles , selected ...
Página 143
... 4.9 9.4 17.1 30.0 50.7 If A denote the density of dry air and W that of vapour at saturation , the density of saturated air is A - W , or more exactly A 608 W. - 144 CHAPTER X. MAGNETISM . 179. THE unit magnetic pole Ix . ] HEAT . 143.
... 4.9 9.4 17.1 30.0 50.7 If A denote the density of dry air and W that of vapour at saturation , the density of saturated air is A - W , or more exactly A 608 W. - 144 CHAPTER X. MAGNETISM . 179. THE unit magnetic pole Ix . ] HEAT . 143.
Página 144
... magnetic potentials of the two points . Hence the dimensions of magnetic potential are work ML2T - 2 . M ̃3L ̄ * T = MaL1T ̄1 . Р = 181. The intensity or strength of a magnetic field is the force which a unit pole will experience when ...
... magnetic potentials of the two points . Hence the dimensions of magnetic potential are work ML2T - 2 . M ̃3L ̄ * T = MaL1T ̄1 . Р = 181. The intensity or strength of a magnetic field is the force which a unit pole will experience when ...
Página 145
... magnetic substance ( whether paramagnetic or diamagnetic ) is placed in a magnetic field , it is magnet- ised by induction . From this point of view the intensity of the field to which the magnetisation is due is called the magnetising ...
... magnetic substance ( whether paramagnetic or diamagnetic ) is placed in a magnetic field , it is magnet- ised by induction . From this point of view the intensity of the field to which the magnetisation is due is called the magnetising ...
Página 146
... magnetic force , or strength of field . On the other hand , if the narrow crevasse be transverse , that is , if it ... magnet- ism on either face being numerically equal to the intensity of magnetisation , which is denoted by I. These ...
... magnetic force , or strength of field . On the other hand , if the narrow crevasse be transverse , that is , if it ... magnet- ism on either face being numerically equal to the intensity of magnetisation , which is denoted by I. These ...
Otras ediciones - Ver todas
Términos y frases comunes
acceleration adopted atmosphere body C.G.S. system C.G.S. units capacity Carbonic Acid cell centimetre coefficient column compression Copper Crown 8vo cubic centim denoting density determinations difference of potential dimensions distance dynes dynes per square earth's edition elasticity electromotive force electrostatic unit employed equal equation equivalent ergs farad Fcap following table following values formula fundamental units gases given glass grammes gravity Hence Hydrogen inch index of refraction inductive intensity iron liquid longitudinal magnetic mercury metre millimetres multiplied Nitrous Oxide numerical value Oxide Peltier effect PHYSICS Platinum pressure Professor quantity of electricity quotient radius ratio Regnault shear Silver specific heat specific resistance specimen square centim standard stress substance sulphate sulphuric acid surface Temp temperature thermoelectric thermoelectric heights thermometer Thomson effect Trans unit of heat unit of length vacuo value of g velocity Viscosity volume wire Young's modulus Zinc
Pasajes populares
Página 4 - A ratio of t ; and the numerical value — will vary inversely a as l, and directly in the duplicate ratio of t. In other words, the unit of acceleration varies directly as the unit of length, and inversely as the square of the unit of time; and the numerical value of a given acceleration varies inversely as the unit of length, and directly as the square of the unit of time. It will be observed that these have been deduced as direct consequences from the fact that [the numerical value of] an acceleration...
Página 213 - CGS" prefixed, these being the initial letters of the names of the three fundamental units. Special names, if short and suitable, would, in the opinion of a majority of us, be better than the provisional designations "CGS unit of . . . ." Several lists of names have already been suggested ; and attentive consideration will be given to any further suggestions which we may receive from persons interested in electrical nomenclature. The
Página 216 - September 22nd, 1881:— 1. For electrical measurements, the fundamental units, the centimetre (for length), the gramme (for mass), and the second (for time), are adopted. 2. The Ohm and the Volt (for practical measures of resistance and of electromotive force or potential) are to keep their existing definitions, 102 for the Ohm, and 108 for the Volt.
Página 50 - ... large deformations without receiving a permanent set, is said to have wide limits of elasticity. A body which, like steel, opposes great resistance to deformation, is said to have large coefficients of elasticity. Any change in the shape or size of a body produced by the application of force to the body is called a strain; and an action of force tending to produce a strain is called a stress. When a wire of cross-section A is stretched with a force F, the...
Página 211 - FRS, and Professor EVERETT (Reporter). WE consider that the most urgent portion of the task intrusted to us is that which concerns the selection and nomenclature of units of force and energy ; and under this head we are prepared to offer a definite recommendation. A more extensive and difficult part of our duty is the selection and nomenclature of electrical and magnetic units. Under this head we are prepared with a definite recommendation as regards selection, but with only an interim recommendation...