Oven gas stove included the AGA cooker invented in 1922 by Gustaf Dalén. The first electric ovens were invented in the very late 19th century, however, like many electrical inventions destined for commercial use, mass ownership of electrical ovens could not be a reality until better and more efficient use of electricity was available. More recently, ovens have become slightly more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spencer in 1946, and with the help from engineers, the microwave oven was patented. The microwave oven uses microwave radiation to excite the molecules
Useful idiot it has recurred thereafter in the periodical's articles. A similar term, "useful innocents", appears in Austrian-American economist Ludwig von Mises' 1947 book, "Planned Chaos". Von Mises wrote that the term was used by Communists for liberals, whom von Mises describes as "confused and misguided sympathizers". The term useful innocents also appears in a 1946 "Reader's Digest" article titled "Yugoslavia's Tragic Lesson to the World", written by Bogdan Raditsa, who had served the Yugoslav government-in-exile during World War II, supported Josip Broz Tito's partisans (though not a Communist himself) and briefly served in Tito's new Yugoslav government before leaving for New