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LG Electronics is a part of LG Corporation, the fourth largest chaebol in South Korea, and often considered as the pinnacle of LG Corp with the group's chemical and battery division LG Chem. It comprises four business units: home entertainment, mobility, home appliances & air solutions, and business solutions.
Thanks to the discontinuity produced by Rumford's brick "smoke shelf", the flow of smoke gases up the chimney became detached from the outside wall at the lip of the shelf. This set up a counter-circulation of outside air which flowed down the backside of the chimney, while a mixture of outside air and smoke flowed up the opposite side.
Some fireplace units incorporate a blower, which transfers more of the fireplace's heat to the air via convection, resulting in a more evenly heated space and a lower heating load. Fireplace efficiency can also be increased with the use of a fireback, a piece of metal that sits behind the fire and reflects heat back into the room.
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The gap thus forms a quarter-wave transformer, transforming the high impedance at the top of the ditch to a low (ideally zero) impedance at the broad wall of the waveguide. [citation needed] Figure 4. Plastic caps over disconnected flanges prevent dirt [4] and moisture entering the waveguide, in addition to protecting the face of the flange ...
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A command signal may, for example, power all screens in the video wall on or off, or calibrate the brightness of a single screen after bulb replacement (in Projection-based screens). Reasons for using a video wall instead of a single large screen can include the ability to customize tile layouts, greater screen area per unit cost, and greater ...
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