Axially symmetrical paraboloid. The inside surface is concave
A rotating furnace is a device for making solid objects which have concave surfaces that are segments of axially symmetrical paraboloids. Usually, the objects are made of glass. The furnace makes use of the fact, which was known already to Newton, that the centrifugal-force-induced shape of the top surface of a spinning liquid is a concave paraboloid, identical to the shape of a reflecting telescope's primary focusing mirror.
Paraboloids can be used in various ways, including (after being silvered) as primary mirrors in reflecting telescopes and solar cookers.[1]
^"Using Spinning Liquids to Simplify the Construction of parabolic Solar Concentrators".
A rotatingfurnace is a device for making solid objects which have concave surfaces that are segments of axially symmetrical paraboloids. Usually, the...
through, the charge. The ore is deposited on a tray, or carts, rotating slowly in the furnace. After one rotation, the ore is reduced; it is then discharged...
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or...
direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected...
An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of...
reflectors, for use in solar furnaces and other non-critical applications, can be made quite simply by using a rotatingfurnace, in which the container of...
sides and top. The whole assembly is rotating around a vertical axis passing through the centre. (See Rotatingfurnace) Solar cooker with parabolic reflector...
where a small mould is poured, then spun on the end of an arm, for a smaller scale Spin coating Rotatingfurnace Compare Processes, retrieved 2014-09-25....
Molten glass is rotated to make its surface paraboloidal, and is kept rotating while it cools and solidifies. (See Rotatingfurnace.) The resulting mirror...
the Giant Magellan Telescope. The casting of the first mirror, in a rotatingfurnace, was completed on November 3, 2005. A third segment was cast in August...
hearth furnace also known as a vertical calciner, is used for continuous preparation and calcining of materials. The multiple hearth furnaces consist...
boiler furnace for combustion. The tubular preheater ductings for cold and hot air require more space and structural supports than a rotating preheater...
Types of industrial furnaces include batch ovens, metallurgical furnaces, vacuum furnaces, and solar furnaces. Industrial furnaces are used in applications...
solar cookers. Devices for constructing such paraboloids are known as rotatingfurnaces. Paraboloidal reflectors generate high temperatures and cook quickly...
Sootblowers Rake Sootblowers Air Heater Blower Rotating Element Sootblowers Multi-Media Sootblowers Fixed Rotating Steam blowing medium: Steam Air High Pressure...
diameter. Rotating rabble arms constantly turn over the mixture and move the intermediate product to a lower plate. The kiln portion of the furnace is constructed...
production, including spin-casting lightweight honeycomb mirrors in a rotatingfurnace, and stressed-lap polishing. The Mirror Laboratory completed the second...
burners are provided on the boiler furnaces. Barring gear (or "turning gear") is the mechanism provided to rotate the turbine generator shaft at a very...
Rollox Chemical Works in Glasgow. Mactear was known for inventing a rotatingfurnace that was used for the continuous manufacturing of sodium sulfate. He...
Oil refining Chemicals Synthetic fibers Fertilizers Pulp and paper Blast furnace (iron) Metal smelting Power stations Natural gas processing Sanitary waste...
The Hagi Reverberatory Furnace (萩反射炉, Hagi hansharo) is the ruins of an Edo period reverberatory furnace erected by Chōshū Domain in what is now the Chintō...
a unit with completely water cooled furnace at Windsor Mills in 1934. After reverberatory and rotatingfurnaces the recovery boiler was on its way. The...
contributor to climate change. A calciner is a steel cylinder that rotates inside a heated furnace and performs indirect high-temperature processing (550–1150 °C...
experiment of rotating spheres tied by a cord and spinning around their centre of mass. In this case, the identification of a rotating, non-inertial frame...
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