TABLE Of the Expansion of Water by Heat.-By DALTon. Of the Heating Power of various Combustible Substances, exhibiting the utmost quantity of Water evaporated by the given Weights, and the smallest quantity of Air capable of producing total Combustion. DR. URE. TABLE Of boiling points of water holding various proportions of salt in solution. Expansion of Liquids in Volume from 32° to 212° Fahrenheit. Of the Linear Dilatation of Solids by Heat. a bar takes at 212°, whose length at 32° Dimensions which is 1·000000. Of Capacities of Bodies for Heat referred to Water as the Standard. The pressure or gravity of the atmosphere, being equal to a column of water 34 feet in height, is the means or principle on which rests the utility of the common pump, also of the syphon, and all other such hydraulic applications. In the pump, the internal pressure on the surface of the liquid is removed by the action of the bucket and as by degrees the density becomes lessened, so the water rises by the external pressure to the above-named height; and at such height it will remain, unless by some derangement of construction taking place, the atmospheric fluid is allowed to enter and displace the liquid column. But observe, if the temperature of the water or other liquid be so elevated that steam or vapor arise through it, then, according to the vapor's accumulation of density, may the action of the pump be partially or wholly destroyed; and the only means of evasion in such cases is to place the working bucket beneath the surface of the liquid which is required to be raised. 383 195 156 347 175 140 311 155 124 275 135 108 239 115 92 374 190 152 338 170136|| 302 150 120 266 130104 230 110 88 365 185 148 329 165 132 293 145 116 257 125100 221 105 84 To convert the Degrees in the three Scales into each other. To convert Centigrade or Reaumur's into Fahrenheit's Degrees. -Multiply the number of degrees by 9, divide the product by 5 for Centigrade, or by 4 for Reaumur's; add 32 to the quotient, and the sum will be degrees of Fahrenheit. To convert Fahrenheit's into Centigrade or Reaumur's Degrees.-Subtract 32 from. the number of degrees, and divide the remainder by 9; multiply the quotient by 5 for Centigrade, or 4 for Reaumur's; the products will be the required degrees respectively. |