Abstract :
A tough, new, inorganic insulating material just announced (and pictured on the cover) is made of bonded mica. It is expected to be useful where light weight is wanted and where the insulation must withstand high temperatures and radiation. The mica laminate comes in sheets up to 0.125 inch thick, and can be machined or molded. It will resist temperatures up to 1,400 F, has an electromagnetic wave transmission of 95 per cent, and is two thirds the weight of its equivalent in ceramic. General Electric is the manufacturer.
