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Percy Spencer (July 19, 1894 – September 8, 1970) was an American physicist, electrical engineer and inventor, known as the inventor of the microwave oven. [ 1 ] Early life
A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. [1] This induces polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating .
In 1947, just a year after Spencer’s snack food serendipity, the first commercial microwave oven hit the market. Called the “Radarange,” it weighed nearly 750 pounds and cost more than $2,000 .
In 1869, John Spencer & Sons took the works over, renaming it the Tyne Haematite Iron Company when it reopened in 1871. The works then used imported Spanish ore, rather than locally mined ore. The works closed in 1886, and in 1903 the Newcastle and District Electric Lighting Company erected Lemington Power Station on its site.
AL-6XN (UNS designation N08367) is a type of weldable stainless steel that consist of an alloy of nickel (24%), chromium (22%) and molybdenum (6.3%) with other trace elements such as nitrogen. The high nickel and molybdenum contents of the AL-6XN alloy give it good resistance to chloride stress- corrosion cracking.
Stainless steel, also known as inox, corrosion-resistant steel (CRES), or rustless steel, is an iron-based alloy containing a minimum level of chromium that is resistant to rusting and corrosion. Stainless steel's resistance to corrosion results from the 10.5% or more chromium content, which forms a passive film that can protect the material ...
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