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Battery operated hand warmers use electrically resistive heating devices to convert electrical energy in the battery into heat. Typically hand warmers can heat for up to six hours, with heat outputs from 40-48C. Rechargeable electronic hand warmers can be charged from a mains power supply or from a 5V USB power supply, with many recharge cycles ...
When used domestically, such as with fondue, a food warmer may simply be a small vessel containing food upon a trivet which contains a heat source such as a flame or electric element. Some food cookers can then, in essence, become food warmers as they use a reduced heat to maintain a serving temperature. [1] Electric rice cookers do this ...
In the United States, an informal meeting at work, over lunch, where everyone brings a packed lunch, is a brown-bag lunch or colloquially a "brown bag". One of the earliest references to this type of meal is found in the Bible, where it is said that the prophet Habakkuk, then in Judea, prepared oatmeal and pieces of bread in a basket to take as ...
The first boombox was developed by the inventor of the audio compact cassette, Philips of the Netherlands.Their first 'Radiorecorder' was released in 1966. The Philips innovation was the first time that radio broadcasts could be recorded onto cassette tapes without the cables or microphones that previous stand-alone cassette tape recorders required.
In the early 20th century, electric blankets began to replace the bed warmer. [5] An alternative kind of bedwarmer in the mid-20th Century in the UK was a 36cm/14inch pressed steel "flying saucer" or lozenge-shaped device made by Belling (established 1912), [6] powered using an internal 40W incandescent light bulb as a heat source. [7]
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