![ACEC/MN on Twitter: "Happy #MicrowaveOvenDay! The heating effect of a high-power microwave beam was accidentally discovered by Percy Spencer. The first food cooked with Spencer's microwave oven was popcorn & the second ACEC/MN on Twitter: "Happy #MicrowaveOvenDay! The heating effect of a high-power microwave beam was accidentally discovered by Percy Spencer. The first food cooked with Spencer's microwave oven was popcorn & the second](https://pbs.twimg.com/media/FjS-g6gWIAIei-g.jpg:large)
ACEC/MN on Twitter: "Happy #MicrowaveOvenDay! The heating effect of a high-power microwave beam was accidentally discovered by Percy Spencer. The first food cooked with Spencer's microwave oven was popcorn & the second
Herholdts - Percy Spencer invented the first microwave oven after World War II from radar technology and named it the "Radarange". It was first sold in 1946. #Herholdt #TBT #appliances | Facebook
![This is how Percy Spencer invented the microwave after a candy bar cooked in his pocket - India Today This is how Percy Spencer invented the microwave after a candy bar cooked in his pocket - India Today](https://akm-img-a-in.tosshub.com/indiatoday/images/story/201807/InShot_20180709_204953078.jpeg)