Quick & curious · Technology

The first microwave oven on sale weighed about 340 kilos.

A large stainless-steel microwave oven in a ship's galley
Photo: Acroterion · CC BY-SA 4.0 · Original

340kgfor the first microwave on sale

The story behind it

The first microwave oven on sale weighed about 340 kilos.

Its inventor is generally considered to be Percy Spencer at Raytheon, a company that built radar tubes. Legend has it that a candy bar in his pocket melted while he stood in front of a radar set. Spencer tried it out: popcorn worked, and an egg exploded in a colleague's face.

Sources

Every statement in this discovery is backed by one of these sources and was checked before publication.

  1. Wikipedia: Percy Spencer (accessed 2026-10-07)
  2. Wikipedia: Microwave oven (accessed 2026-10-07)