## Railway Signaling, Volume 1School of Railway Signaling, 1910 - Railroads |

### Common terms and phrases

angle angle of incidence ANSWERS applied force atmospheric pressure body called center of curvature ciphers circle circumference coefficient colors column cubic cylinder decimal places denominator diameter direction distance divided dividend divisor draw expressed factors feet per second figure focal length force acts fraction gases given gravity heat horizontal hydrometer improper fraction inches index of refraction intersecting kinetic energy latent heat lens lever liquid measure mercury minuend mixed number motion multiplicand multiplied obtained parallel parenthesis Pascal's Law pendulum perpendicular pipe piston plane position potential energy prism problem PROBLEM.-If quantity quotient radiant energy radius equal ray of light refraction result scale shown in Fig side signal SOLUTION space specific gravity square straight line Substituting in formula subtract subtrahend surface temperature triangle units valve velocity vertical volume weight whole number

### Popular passages

Page 35 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient.

Page 111 - Newton's Three Laws of Motion," and are as follows: (1) All bodies continue in a state of rest, or of uniform motion in a straight line, unless acted upon by some external force that compels a change.

Page 22 - Multiplying or dividing both terms of a fraction by the same number does not change the value of the fraction.

Page 49 - Multiply as in whole numbers, and point off as many decimal places in the product as there are decimal places in the multiplicand and multiplier, supplying the deficiency, if any, by prefixing ciphers.

Page 64 - TABLE. 144 Square Inches (sq. in.) make 1 Square Foot sq. ft. 9 Square Feet " 1 Square Yard sq. yd. 30} Square Yards " 1 Square Rod sq. rd. ' 160 Square Rods

Page 67 - Reduction of denominate numbers is the process of changing their denomination without changing their value. They may be changed from a higher to a lower denomination or from a lower to a higher — either is reduction. As, 2 hours = 120 minutes. 32 ounces =: 2 pounds.

Page 66 - Weight is the weight used in weighing gold, silver, and jewels. TABLE. • 24 Grains (gr.) make 1 Pennyweight, pwt. 20 Pennyweights " 1 Ounce, oz. 12 Ounces

Page 11 - Write the divisor at the left of the dividend with a curved line between them. Find how many times the...

Page 39 - A Circle is a plane figure, bounded by a curved line, all the points of which are equally distant from a point within, called the cen- OOU-AJ i

Page 50 - Divide as in whole numbers, and give as many decimal places in the quotient as those in the dividend exceed those in the divisor ; if there are not as many, supply the deficiency by prefixing ciphers.