Beers, D. G, et al. Map of Cambria Co., Pennsylvania: from actual surveys & official records. Philadelphia: Published by A. Pomeroy, . Phila.: Printed by Fred. Bourquin, 1867. Map. Retrieved from the Library of Congress, <https://www.loc.gov/item/2012592157/>.
A typical heating element is usually a coil, ribbon (straight or corrugated), of strip of wire that gives off heat much like a lamp filament. When an electric current flows through it, it glows red hot and converts the electrical energy passing through it into heat, which it radiates out in all directions.
Itâs surface temperature is a mere 11,000 Kelvin. Another star in Orion, Bellatrix, has a temperature of 21,500 Kelvin. Thatâs even hotter. But the hottest known stars in the Universe are the blue hypergiant stars. These are stars with more than 100 times the mass of the Sun. One of the best known examples is Eta Carinae, located about 7,500 light-years from the Sun.