Coming just two decades after the last great global conflict, the Second World War was the most widespread and deadliest war in history, involving more than 30 countries and resulting in more than 50 million military and civilian deaths (with some estimates as high as 85 million dead).
Myths were melting away, and doubt was turning into demand. By 1975, sales of microwave ovens would, for the first time, exceed that of gas ranges. The following year, a reported 17% of all homes in Japan were doing their cooking by microwaves, compared with 4% of the homes in the United States the same year.
The first commercially available microwave oven was, Raytheon built, Radarange. It was made in 1947 and was very large. Each made was 1.8 meters tall, had 340 kilograms weight and was sold for $5,000 which is today somewhere around $52,000. It also had power of 3 kilowatts and was cooled with water.