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2. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

3. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

4. Speed climbing - Wikipedia

   en.wikipedia.org/wiki/Speed_climbing

   Speed climbing is a climbing discipline in which speed is the ultimate goal. [1] Speed climbing is done on rocks, walls and poles and is only recommended for highly skilled and experienced climbers. [2] Competition speed climbing, which takes place on an artificial and standardized climbing wall, is the main form of speed climbing.

5. Stairclimber - Wikipedia

   en.wikipedia.org/wiki/Stairclimber

   Stairclimber wheels. A stairclimber is a type of trolley fitted with rotating wheels or tracks so that it can be pushed or pulled up or down steps or a stairway.Stairclimbers can be manual or battery-powered, and are commonly found in wheel, track, push arm or walker variants.

6. Henry Barber (climber) - Wikipedia

   en.wikipedia.org/wiki/Henry_Barber_(climber)

   Henry Barber (born 1953 in Boston, Massachusetts) is an American rock climber and ice climber who rose to prominence in the 1970s. Known by the nickname "Hot Henry", Barber was an advocate of clean climbing, a prolific first ascenscionist and free soloist.

7. Fan death - Wikipedia

   en.wikipedia.org/wiki/Fan_death

   Fan death is a misconception that people have died as a result of running an electric fan in a closed room with no open windows. While the supposed mechanics of fan death are impossible given how electric fans operate, belief in fan death persisted to the mid-2000s in South Korea , [ 1 ] [ 2 ] [ 3 ] and also to a lesser extent in Japan .