Calendar: 1850-1851 Page 325

APPLIED SCIENCES 321 IV -Cijcmis'trj 10 Explain the action of the mercurial gauge attached to the air-pump 11 What precautions are requisite in taking the specific gravity of gas What is the true volume of cubic inches of gas temperature 68 barometer 29 over mercury the level of the metal in the jar being inches higher than in the trough 12 What are the requisites in good thermometer Mention the precautions necessary in fixing the height of the mercury at the boiling point What is the ratio between the scales of Fahrenheit the Centigrade and Reaumur What degree of Fahrenheit corresponds to -16 and to 45 13 Explain what is meant by the specific heat of body and state the relation that has been observed between the specific heats of the elements and their combining numbers 14 What are the chief points of difference between the electricity of the Voltaic battery and that of the electrical machine Explain the terms Dielectric-Insulation-Induction 15 What is the principle of the electric condenser How is it used 16 Describe the astatic galvanometer 17 What do you understand by Voltaic circuit Explain the difference between Simple and Compound circuit 18 Describe the mode in which electric currents may be excited by means of permanent magnet The ellipse defined by y2-4ax χ always cuts at right angles the parabola y2 whatever be d6 11 cot Θ s1 6f cos Θ cos θ sin Θ "3 Trace the curve in which cos Θ sin Θ cos