If the element on your stove had no limit, it would theoritically pass from the original black (amitting no heat) to red (925 degree celcius) orange, yellow and then white (1200 degree) and finally bluish white ( 2000 degree).
The hotter the temperature, the more the colours shift from red to yellow to white to blue. Blue is so hot it is at the very edge of the visible spectrum. Beyond blue are ultraviolet rays, which can cause burn an even skin cancer.
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