Illustrations of the C.G.S. System of Units: With Tables of Physical ConstantsMacmillan and Company, 1891 - 220 páginas |
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Página xiii
... equal to 1.09362311 yard , or 3.2808693 feet , or 39.370432 inches , the standard metre being taken as correct at 0 ° C. , and the standard yard as correct at 163 ° C. Hence the inch is 2.5399772 centims . , the foot 30.479726 centims ...
... equal to 1.09362311 yard , or 3.2808693 feet , or 39.370432 inches , the standard metre being taken as correct at 0 ° C. , and the standard yard as correct at 163 ° C. Hence the inch is 2.5399772 centims . , the foot 30.479726 centims ...
Página 2
... equal to the product of [ the numerical values of ] its length and breadth ; whereas , if any other unit of area were employed we should have to introduce a third factor which would be constant for all rectangles . 3. Still more ...
... equal to the product of [ the numerical values of ] its length and breadth ; whereas , if any other unit of area were employed we should have to introduce a third factor which would be constant for all rectangles . 3. Still more ...
Página 3
... equal to the numerical value of L divided by the numerical value of T. But these numerical values are V LT v ' ľ ' t hence we must have V = Lt v 7 T ( 1 ) This equation shows that , when the units are changed ( a change which does not ...
... equal to the numerical value of L divided by the numerical value of T. But these numerical values are V LT v ' ľ ' t hence we must have V = Lt v 7 T ( 1 ) This equation shows that , when the units are changed ( a change which does not ...
Página 4
... equal to [ the numerical value of ] a length , divided by [ the numerical value of ] a time , and then again by [ the numerical value of ] a time . The relations here pointed out are usually expressed by saying that the dimensions of ...
... equal to [ the numerical value of ] a length , divided by [ the numerical value of ] a time , and then again by [ the numerical value of ] a time . The relations here pointed out are usually expressed by saying that the dimensions of ...
Página 7
... equal . In passing from the first to the second , we have changed the units in the inverse ratio to their numerical multipliers , and have thus left both the distance and the time unchanged . In passing from the second to the third , we ...
... equal . In passing from the first to the second , we have changed the units in the inverse ratio to their numerical multipliers , and have thus left both the distance and the time unchanged . In passing from the second to the third , we ...
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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...