No coin nor oath required. For personal study only.
E. I. du Pont de Nemours and Company has announced a new plastic electrical insulation which will not support combustion. Designated "Rulan" flame-retardant plastic, the new material will not burn after the flame has been removed, and neither will it drip when molten. Its power factor, over a wide range of frequencies, is 0.002, its dielectric constant is 2.7. It can be extruded on to wire at high speeds, and can also be injection molded.
๐ SIMILAR VOLUMES
A new testing machine has been developed at Northwestern University that will make an artificial leg "walk" at the rate of 3,000,000 steps in ten days--the equivalent of three years of normal wear. The machine, called a fatigue tester, will permit faster testing and development of improved artifici
Pont de Nemours and Company has announced a new plastic electrical insulation which will not support combustion. Designated "Rulan" flame-retardant plastic, the new material will not burn after the flame has been removed, and neither will it drip when molten. Its power factor, over a wide range of f
plastic matting is suitable for use where acids or oils are present, or in locations where matting is given rigorous service. Manufacturer says it will lie flat and hug the floor. Manufactured in black and brown, it is 3/32 in. thick by 36 in. wide and comes in rolls 25 to 35 yards long. (3) Suitabl
the normal way. Exhaust is through ports. To obtain smooth operation and uniform combustion, some sort of combustion stabilizer is necessary. Therefore, a small amount of fuel oil is injected with the gas as "pilot oil." R. H. O.