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Similarly, a fan may improve the transfer of thermal energy from the heat sink to the air. Construction and materials A heat sink usually consists of a base with one or more flat surfaces and an array of comb or fin-like protrusions to increase the heat sink's surface area contacting the air, and thus increasing the heat dissipation rate.
Air naturally stratifies, i.e. warmer air rises to the ceiling while cooler air sinks, meaning that colder air settles near the floor where people spend most of their time. A ceiling fan, with its direction of rotation set so that the warmer air on the ceiling is pushed down along the walls and into the room, heating the cooler air.
A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds. Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case. Using switches or knobs, attached fans can ...
Only three Kmart stores remain, but those who loved shopping at the retail chain are sharing special memories of time spent in the stores. Kmart shoppers share memories as store closures continue ...
Kmart's longest lasting logo, used from 1969 to 1990. Under the leadership of executive Harry Cunningham, S.S. Kresge Company opened the first Kmart-named store, at 27,000 square feet (2,500 square meters), which was referred to by Kresge as a "bantam" Kmart and was in fact originally intended to be a Kresge store until late in the planning process, on January 25, 1962, in San Fernando ...
"I [thought to myself], ‘Oh, no, this is not going to happen today,’ ” Linda Rosa recalled of the incident
In another, Kmart reminds a twitter user they're still available for customers' online shopping needs. "Don't forget you can shop online with us 24/7 at Kmart.com," the reply reads.