Notes of a Course of Nineteen Lectures on Natural Philosophy Delivered at Guy's Hospital During the Session 1872-73J. & A. Churchill, 1873 - 166 pages |
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Notes of a Course of Nineteen Lectures on Natural Philosophy Delivered at ... G. F. Rodwell No preview available - 2017 |
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acquire action alcohol alcohol-and-water mixture attractive force axis battery body Boyle's law called cause centre charged cohesion conductor copper current electricity cylinder decomposed density diamagnetic diameter direction discharge distance earth elec electric current ellipsoid equal ether experiment Experimental Illustration falling force of gravity friction fulcrum gases glass hence horizontal inches induction insulated interstellar medium kinetic energy layer LECTURE lever Leyden jar light liquid luminiferous ether magnetic needle mass of matter medium mercury metal millims mirror molecular motion molecules move Natural Philosophy negative electricity neutral fluid north pole oil-sphere orifice oscillation particles Pascal's law pendulum plane plate polarised positive electricity possesses potential energy pound pressure produced quantity radiation readily refraction repelled resistance right angles rubbed solid space sphere Static STATIC ELECTRICITY substance surface thermometer tion tricity tube uniform temperature velocity vertical vessel volume weight wire zinc
Popular passages
Page 2 - Idola tribus sunt fundata in ipsa natura humana, atque in ipsa tribu seu gente hominum. Falso enim asseritur, sensum humanum esse mensuram rerum ; quin contra, omnes perceptiones, tam sensus quam mentis, sunt ex analogia hominis, non ex analogia universi. Estque intellectus humanus instar speculi inaequalis ad radios rerum, qui suam naturam naturae rerum immiscet, eamque distorquet et inficit.
Page 15 - There is an equilibrium upon the wheel and axle when the power is to the weight as the radius of the axle to the radius of the wheel.
Page 117 - ... magnetic dip, like the declination, is also subject to a secular variation. Reference has been made above to the magnetic poles of the earth. This term is so generally misunderstood — the term being really an unfortunate one — that it will not be amiss to explain here what is meant. The so-called magnetic poles of the earth are those points on the earth's surface where the dipping needle stands exactly vertical. At these points the compass needle has no fixed direction, the declination having...
Page 41 - Archimedean theorem, that, when a solid body is immersed in a liquid it loses a portion of its weight, equal to the weight of the fluid which it displaces, or to the weight of its own bulk of the liquid.
Page 24 - When pressure produces motion in a body, the momentum generated in a given short time is proportional to the pressure.
Page 42 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.
Page 96 - ... substance expanded by heat possess potential energy (molecular potential energy) competent to cause them to recross the space through which they have been separated by the added molecular motion, and to generate the heat consumed in separating them when the kinetic energy thus induced is arrested. And since all matter possesses a certain amount of molecular motion, and no two molecules are in contact, it follows that all molecules possess a certain amount of potential energy, and that the acts...
Page 150 - Joule's law that the amount of heat generated in a given time is proportional to the resistance of the conductor and to the square of the strength of the current.
Page 77 - The quotient found by dividing the sine of the angle of incidence by the sine of the angle of refraction, is called the index of refraction.
Page 98 - The amount of molecular motion necessary to raise any substance through a known number of thennometric degrees (N. 237) compared with that necessary to raise the same weight of water through the same number of degrees, is called the specific heat of that substance. Thus to raise 1 Ib.