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  2. Rheem Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/Rheem_Manufacturing_Company

    www .rheem .com. Rheem Manufacturing Company is an American privately held manufacturer that produces residential and commercial water heaters and boilers, as well as heating, ventilating and air conditioning (HVAC) equipment. The company also produces and sells products under the Ruud brand name.

  3. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    A furnace ( American English ), referred to as a heater or boiler in British English, is an appliance used to generate heat for all or part of a building. Furnaces are mostly used as a major component of a central heating system. [clarification needed] Furnaces are permanently installed to provide heat to an interior space through intermediary ...

  4. Vacuum furnace - Wikipedia

    en.wikipedia.org/wiki/Vacuum_furnace

    A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation, heat loss from the product through convection, and removes a source of contamination. This enables the furnace to heat materials (typically metals and ceramics) to ...

  5. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    Sipgate uses this code if an account does not have sufficient funds to start a call. Shopify uses this code when the store has not paid their fees and is temporarily disabled. Stripe uses this code for failed payments where parameters were correct, for example blocked fraudulent payments. 403 Forbidden

  6. Industrial furnace - Wikipedia

    en.wikipedia.org/wiki/Industrial_furnace

    An industrial chamber furnace, used to heat steel billets for open-die forging. An industrial furnace, also known as a direct heater or a direct fired heater, is a device used to provide heat for an industrial process, typically higher than 400 degrees Celsius. [1] They are used to provide heat for a process or can serve as reactor which ...

  7. Sulfur - Wikipedia

    en.wikipedia.org/wiki/Sulfur

    Sulfur is an essential component of all living cells. It is the eighth most abundant element in the human body by weight, [92] about equal in abundance to potassium, and slightly greater than sodium and chlorine. [93] A 70 kg (150 lb) human body contains about 140 grams of sulfur. [94]

  8. Fossil fuel - Wikipedia

    en.wikipedia.org/wiki/Fossil_fuel

    The main fossil fuels (from top to bottom): natural gas, oil, and coal. A fossil fuel [a] is a hydrocarbon -containing material such as coal, oil, and natural gas, [2] formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. Fossil fuels may be burned to provide heat for use ...

  9. Hippocratic Oath - Wikipedia

    en.wikipedia.org/wiki/Hippocratic_Oath

    The Hippocratic Oath is an oath of ethics historically taken by physicians. It is one of the most widely known of Greek medical texts. In its original form, it requires a new physician to swear, by a number of healing gods, to uphold specific ethical standards. The oath is the earliest expression of medical ethics in the Western world ...