Original caption
Your microwave oven is not tuned to water. It runs at 2.45 gigahertz because regulators marked that band as junk spectrum in 1947, and Wi-Fi moved in for the same reason. Water absorbs most strongly around 20 gigahertz; 2.45 was chosen so the energy reaches 1 to 2 centimeters into food. #techtok #hereswhatyouneedtoknow #wifi #ismband #learnontiktok