Electricity Made Simple and Treated Non-technically: An Invaluable Treatise for Engineers, Dynamo Men, Firemen, Linemen, Wiremen and Learners for Study Or Reference

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F.J. Drake, 1899 - Electricity - 232 pages

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Page 150 - As a Unit of Resistance, the International Ohm, which is based upon the ohm equal to io9 units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grammes in mass of a constant cross-sectional area, and of the length of 106.3 centimetres.
Page 74 - ... between the ribs. Place your elbows firmly against your hips, and using your knees as a pivot press upward and inward toward the heart and lungs, throwing your weight slowly forward for two or three seconds, until your face almost touches that of your patient, ending with a sharp push which helps to jerk back to your first position. At the same time relax the pressure of your hands so that the ribs, springing back to their original position, will cause the air to rush into the subject's lungs....
Page 51 - Giving light ; color of the light ; crooked direction ; swift motion ; being conducted by metals ; noise in exploding ; conductivity in water and ice ; rending imperfect conductors; destroying animals; melting metals; firing inflammable substances ; sulphureous smell (ozone) ; and similarity of appearance between the brush discharge from the tips of masts and spars sometimes seen at sea, called St. Elmo's fire by the sailors, and the slow escape from points on an electrical machine or a leyden jar.
Page 73 - Place the subject on his back, head down and bent backward, arms folded under the head (under no conditions raise the head from the ground or floor). Place a hard roll of clothing beneath the body, with the shoulders declining slightly over it. Open the mouth, pull the tongue forward, and with a cloth wipe out saliva or mucus. Thoroughly loosen the clothing from the neck to the waist, but do not leave the subject's body exposed, for it is essential to keep the body warm; kneel astride the subject's...

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