National Geographic : 1923 Jun
Winding the telephone con denser, from linen paper and tin foil. The condenser keeps elec tric currents where they belong. This is how pure linen 'telephone paper" looks to the microscope. aper. in your telephone * U NSUSPECTED because unseen. But it's there. And it gets into action every time you say "Hello!" In help ing to keep voices on the tele phone track, paper has long proved its value. Each year the Western Electric Company uses 5,500,000 pounds of it in a mil lion telephones and 6,000 miles of cable. Western Electric Since 1869 Makers of Electrical Equipment *No.Iofaseries on raw materials. This machine twists the paper-covered wire into a cable "core." In a cable as many as 1200 people may be talking at the same time. Your "Hello!" travels over wires which have been wrapped in paper. Paper is a great insulator. It helps to prevent your message from get ting tangled up with messages on other wires.