auxiliary tank where it is stored up to assist in starting again. The illustration shows the car bed and lower works. A car provided with SMITH AND DE COPPET'S AMMONIA ENGINE is represented in Fig. 8. Liquid ammonia stored in a reser at each side of the car and withdrawn therefrom by a pump. A third pump removes the ammonia from the condenser and for further use. Chains communicate motion from pulleys on the engine crank shaft to pulleys on the driving wheel shaft. ing the compact arrangement of boiler necessary to adapt it to the limited space in street cars. A New Method of Projecting
auxiliary tank where it is stored up to assist in starting again. The illustration shows the car bed and lower works. A car provided with SMITH AND DE COPPET'S AMMONIA ENGINE is represented in Fig. 8. Liquid ammonia stored in a reser at each side of the car and withdrawn therefrom by a pump. A third pump removes the ammonia from the condenser and for further use. Chains communicate motion from pulleys on the engine crank shaft to pulleys on the driving wheel shaft. ing the compact arrangement of boiler necessary to adapt it to the limited space in street cars. A New Method of Projecting Spectra. If the inner coating of a Leyden jar be connected by a wire or a chain to one terminal of an induction coil and the outer coating to the other terminal when the battery connection is made or broken the induced electricity is very much con densed and shows itself as a much shorter spark ; but the intensity of its light is vastly increased and the passage of the sparks is accompanied with quite a deafening sound Advantage has been taken of this form of spark to study the spectra of the elements by making the spark to pass between terminals of the material to be examined. I have lately found that the intensity of the light from such a spark from one of Ritchie's 10 inch vertical coil is sufficiently great to admit of projection upon a screen in the lecture room. The terminals were arranged one above the other so as to give a vertical spark. A 1 gallon Leyden jar was used and the battery had three Bunsen 2 gallon cells. The terminals could be separated about an inch. About a foot in front of the terminals was fixed a double convex lens 4 inches in diameter and of about 1 foot focus and a single bottle prism of bisulphide of carbon in front of the lens where the larger part of the refracted rays would fall upon it at the proper angle the refracted and dispersed rays falling upon the screen the focussing being done by moving the lens until a plainly marked spectrum appeared. This
Size: 3316px × 4728px
Location:
Photo credit: © Corantos / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 8, adapt, ammonia, arrangement, assist, auxiliary, battery, bed, boiler, broken, car, cars, chain, chains, coating, coil, communicate, compact, condenser, connected, connection, coppet, crank, de, densed, driving, electricity, engine, fig, illustration, induced, induction, ing, jar, leyden, limited, liquid, method, motion, outer, projecting, pulleys, pump, removes, represented, reser, shaft, side, smith, space, spectra, starting, stored, street, tank, terminal, therefrom, wheel, wire, withdrawn, works
