Microwave oven
The development of the cavity magnetron in the UK made possible the production of electromagnetic waves of a small enough wavelength (microwaves). American engineer Percy Spencer is generally credited with inventing the modern microwave oven after World War II from radar technology developed during the war. Named the "Radarange", it was first sold in 1946. Raytheon later licensed its patents for a home-use microwave oven that was first introduced by Tappan in 1955, but these units were still too large and expensive for general home use. Sharp Corporation introduced the first microwave oven with a turntable between 1964 and 1966. The countertop microwave oven was first introduced in 1967 by the Amana Corporation. After Sharp introduced low-cost microwave ovens affordable for residential use in the late 1970s, their use spread into commercial and residential kitchens around the world. In addition to their use in cooking food, types of microwave ovens are used for heating in many industrial processes.
Svea 123
Svea stoves were first made by C.R. Nybergs Lödlampfabrik, which also manufactured blowtorches as well as other machinery and equipment. Founded by Carl Nyberg, the firm later became one of the largest industries in Sundbyberg, Sweden. In 1922, the business was taken over by Max Sievert, an early associate of Nyberg's, and renamed Sieverts Lödlampfabrik (later known as Sievert AB). The Svea 123, introduced in 1955, is considered to be the first compact backpacking white gas stove and one of the most popular camping stoves ever made. Its distinctive "roaring" sound has been likened to that of a jet engine at takeoff. In 1969, the Svea brand was acquired by Optimus, another Swedish manufacturer of portable stoves, which has continued production of the Svea 123 to the present day. Because of its simple design and reputation for dependable performance, even under extreme conditions, the Svea 123 enjoys a devoted following.