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amount amperes armature belt body brushes called cell cent center of gravity cipher circle coiled conductor commutator conductor connected core current flowing decimal places denominator diameter difference of potential direction distance divided divisor driving wheel dynamo electric current electromotive force energy equal example external circuit feet field coils field magnets figure formula friction galvanometer given Hence horsepower input internal resistance iron joint resistance length lines of force load loss machine magnetic field magnetizing coils motion move multiplied needle north pole number of lines number of revolutions number of teeth obtained Ohm's law ohms output parallel pass plane position pounds pressure produced pulley quotient ratio represent revolutions per minute rheostat right angles root rotated rule screw segments series coils shaft shown in Fig shunt coils strength of current substances tion total number unit velocity voltaic voltmeter volts watts weight whole number wire
Σελίδα 39 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Σελίδα 11 - TROY WEIGHT. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. APOTHECARIES
Σελίδα 11 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 41 - The terms of a ratio are the two numbers to be compared ; thus, in the above ratio, 20 and 4 are the terms. When both terms are considered together, they are called a couplet ; when considered separately, the first term is called the antecedent, and the second term the consequent. Thus, in the ratio 20 : 4, 20 and 4 form a couplet, and 20 is the antecedent, and 4 the consequent.
Σελίδα 21 - If a straight line be drawn through two sides of a triangle, parallel to the third side, a second triangle will be formed whose sides will be proportional to the corresponding sides of the first triangle.
Σελίδα 44 - The first and fourth terms of a proportion are called the extremes, and the second and third terms, the means. Thus, in the foregoing proportion, 8 and 3 are the extremes and 4 and 6 are the means.
Σελίδα 11 - The number to be repeated is called the MULTIPLICAND ; the number which shows how many times the multiplicand is to be taken is called the MULTIPLIER ; the result of the multiplication is called the PRODUCT.
Σελίδα 27 - As a unit of current, the international ampere, which is onetenth of the unit of current of the cgs system of electromagnetic units, and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, and in accordance with accompanying specifications, deposits silver at the rate of 0.001118 of a gramme per second.