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.
It should be noted that the microwave oven didn't become a household appliance until 1967, when Raytheon began to market a countertop version of the Radarange though its subsidiary, Amana. You can learn more about the Radarange history at Raytheon's web site history page.