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2. Shower-curtain effect - Wikipedia

   en.wikipedia.org/wiki/Shower-curtain_effect

   The shower-curtain effect in physics describes the phenomenon of a shower curtain being blown inward when a shower is running. The problem of identifying the cause of this effect has been featured in Scientific American magazine, with several theories given to explain the phenomenon but no definite conclusion.

3. Light curtain - Wikipedia

   en.wikipedia.org/wiki/Light_curtain

   A light curtain is a safety device that detects when a beam of infrared light has been broken by a person passing through an area. Light curtains, now more commonly known as opto-electronic devices, are used to safeguard personnel in the vicinity of moving machinery with the potential to cause harm such as presses , winders and palletisers.

4. 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 ...

5. List of Saturday Night Live commercial parodies - Wikipedia

   en.wikipedia.org/wiki/List_of_Saturday_Night...

   Bathroom Cobra — To keep his girlfriend (Cecily Strong) from discovering the big stink he just left in the bathroom, episode host Vince Vaughn leaves this real-life venomous cobra on the floor. A cut-for-time skit from April 2013. [62] Bathroom Monkey — housewife Janeane Garofalo uses a disposable simian slave that keeps your bathroom clean ...

6. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   This was a dial mounted either on the body of the fan or in a gang box at the wall, and when turned in either direction, continuously varied the speed at which the blades rotated—similar to a dimmer switch for a light fixture. A few fans substituted a rotary click-type switch for the infinite-speed dial, providing a set number of set speeds ...