Search results
Results from the WOW.Com Content Network
In 1967 the first more affordable, $495 (equivalent to $4,523 in 2023), and reasonably sized (counter-top) Radarange brand microwave oven was made available for sale, [2] produced by Amana (a division of Raytheon). [4] Spencer became Senior Vice President and a Senior Member of the Board of Directors at Raytheon. He received 300 patents during ...
A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. [1] This induces polar molecules in the food to vibrate [ 2 ] and produce thermal energy in a process known as dielectric heating .
Raytheon patented the dielectric heating device, naming it the Radarange, and in 1947 the first commercially available microwave oven hit the market. What started as an 800-pound device priced ...
He investigated cooking with microwaves and invented the microwave oven, consisting of a magnetron feeding microwaves into a closed metal cavity containing food, which was patented by Raytheon on 8 October 1945. Due to their expense microwave ovens were initially used in institutional kitchens, but by 1986 roughly 25% of households in the U.S ...
It wasn’t until 1967, two decades after its invention, that the microwave oven finally caught on in American homes in the form of Amana’s compact “Radarange.” By 1975, a million microwaves ...
The klystron, a microwave tube, [20] was noticed in 1938 by Sperry Gyroscope, who gave the Varian brothers and Hansen a contract to do further work. [17] The Varians did not know that the British were also working on early radar technology, which by then could detect submarines, but could not be made light enough to use in airplanes. [10]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A supermarket is a self-service store offering a wide variety of food and household merchandise, organized into departments. It is larger in size and has a wider selection than a traditional grocery store. The concept of a "self-service" grocery store was invented by American entrepreneur Clarence Saunders and his Piggly Wiggly stores ...