The keypad on the Panasonic NN-SE785S is a confusing jungle of icons, which makes it difficult to clearly identify functions. (Below, the icon that looks like weeping asterisks turns out to mean defrost, for example.) There’s not even a numerical pad to set the time for cooking; to do that, you have to go through an icon-based menu, then press an up or down arrow half a dozen times or more to set the time. Though it has a sleek design, our testers felt this model was unnecessarily complicated.
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From the late 1970s, Japanese companies such as Sharp Corporation manufactured low-cost microwave ovens that were affordable for residential use, leading to the rapid expansion of the microwave oven market in the 1980s. After Japanese dominance for much of the 1980s, with Sharp as market leader, South Korean manufacturers began entering the market in the late 1980s, with Samsung becoming a major microwave manufacturer.
A great microwave oven can cook food and heat food. Think: Not just popcorn and leftovers, but steamed veggies, like spaghetti squash, “baked” potatoes, and crispy bacon that’ll rival the cooking results you get from your range — not to mention it’ll do it two to five times faster. Plus, once you learn how to poach eggs in the microwave, you might also finally stop trying to learn how to the old-fashioned way.
The development of the cavity magnetron 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, microwave ovens are used for heating in many industrial processes.