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
Inspector Gadget He usually disguises himself when following Gadget, which often causes Gadget to think he's a M.A.D Agent. He is absent in "Gadget and the Gadgetinis" and only shows up in pictures. The reason given for why he is absent is because after all the years of secretly helping Gadget, he has become phobic of gadgets, the Inspector, and the word itself. He ran away to a riverside shack to get away from Gadget. He returned in the episode, "No Brainer", where Penny made him a translation collar in order to help find Gadget. However, he does return in later spinoffs.