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2. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   Ceiling fans were proven to have a more significant effect on the droplet and airborne transmission when the coughing infected person is located directly under the ceiling fan. Ceiling fans offer better protection from cough exposure for people located closer to the fan center, where the directed airflow changing particle trajectory downward to ...

3. Corsi–Rosenthal Box - Wikipedia

   en.wikipedia.org/wiki/Corsi–Rosenthal_Box

   An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.

4. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

5. 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 .

6. List of common misconceptions - Wikipedia

   en.wikipedia.org/wiki/List_of_common_misconceptions

   Leaving electric fans on while asleep is not dangerous. It is not just heavy metals which can be toxic; other metals (for example beryllium and lithium) can be toxic too. Sleeping in a closed room with an electric fan running does not result in "fan death", as is widely believed in South Korea among older people. As of 2019 this belief was in ...

7. List of Super Bowl commercials - Wikipedia

   en.wikipedia.org/wiki/List_of_Super_Bowl_commercials

   "Ceiling" Another ad featuring a dance scene from Royal Wedding. This time, Fred Astaire uses the Dirt Devil Ultra Hand Vac, to clean the walls and ceilings of a room. Dirt Devil "Stairs" Taken from the 1948 movie, Easter Parade; Fred Astaire cleans a set of stairs using the Dirt Devil Ultra MVP Vacuum. Hotel Quality "Brett Favre"