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 arms and legs. In this series, traditional nemesis Dr. Claw was replaced by the villainess Spydra. In addition, the chief, Strombolli had a "fax tie" that exploded after the mission was read, continuing the running gag from the original series in which Chief Quimby would get blown up by an exploding message. Two years later, in 1997, "Gadget Boy & Heather" spawned an educational spinoff, "Gadget Boy's Adventures in History", which aired on The History Channel. This series marked the last time Don Adams would perform a voice role for an animated Gadget series two years before his retirement from