Science: Biggest Bulb

The largest electric light bulb ever made—22 in. high and 15 in. in diameter—side by side with the smallest, no larger than a grain of rice, was exhibited at the Sprague plant of the General Electric Company, East Orange, N. J. The monster bulb is of 150,000 candlepower and requires four large cables to supply the 30,000 watts it burns. Four long strips of heavily corrugated tungsten steel were used as filaments. The heat generated reached 3,200 degrees Centigrade, melting the glass. A large electric fan was used to cool the air. The inventor,...

Want the full story?

Subscribe Now

Subscribe
Subscribe

Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on TIME.com

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!