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Burn-in on a monitor, when severe as in this "please wait" message, is visible even when the monitor is switched off. Screen burn-in, image burn-in, ghost image, or shadow image, is a permanent discoloration of areas on an electronic visual display such as a cathode-ray tube (CRT) in an older computer monitor or television set.
An IBM computer with a green monochrome monitor Early Nixdorf computer with an amber monitor. A monochrome monitor is a type of computer monitor in which computer text and images are displayed in varying tones of only one color, as opposed to a color monitor that can display text and images in multiple colors.
Graphite blocks are also used in parts of blast furnace linings [53] where the high thermal conductivity of the graphite is critical to ensuring adequate cooling of the bottom and hearth of the furnace. [54] High-purity monolithics are often used as a continuous furnace lining instead of carbon-magnesite bricks.
The optical properties of the glass used on the screen affect color reproduction and purity in color CRTs. Transmittance, or how transparent the glass is, may be adjusted to be more transparent to certain colors (wavelengths) of light. Transmittance is measured at the center of the screen with a 546 nm wavelength light, and a 10.16mm thick screen.
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 provides heats of reaction.
A conveyor belt furnace is a furnace that uses a conveyor or belt to carry process parts or material through a primary heating chamber for rapid thermal processing. It is designed for fast drying and curing of products, and has widespread use in the firing process of thick film and metallization process of solar cell manufacturing.
An electric arc furnace used for steelmaking consists of a refractory-lined vessel, usually water-cooled in larger sizes, covered with a retractable roof, and through which one or more graphite electrodes enter the furnace. [6] The furnace is primarily split into three sections: the shell, which consists of the sidewalls and lower steel "bowl";
Glass Furnace by Siemens hist. 1878 Siemens Regenerator Furnace hist. 1885 in 4 Views. A glass melting furnace is designed to melt raw materials into glass. [1] Depending on the intended use, there are various designs of glass melting furnaces available. [2] [3] [4] They use different power sources. These sources are mainly fossil fueled or by ...