In: Physics
The everyday object or system is Ceiling Fan.
Ceiling Fan rotate more slowly than any other cirulating objects.It has rapidlly very slow movement,though it operates in a high speed visually.The major use of it is to reduce the warm air in the room.These fans were commonly used in united states by 1920 , and it has faced a total fade out condition during 1930, due to the invention of electric air conditioner as described in history.
The ceiling fan operation is different for each and every model and it depends upon the manufacturer. Most popular mode are
1. Variable speeed control mode :
A speed dial mode is looped here where the system can be switched ON / OFF manually , with respect to the speed. Manual mode has been converted to remote controled by certain manufacturers. Apart from these a pull chain method is also designed to operate the variable speed dial.
2. Digital control
In this mode all the ON /OFF positions,speed ,rotational direction and the attached additional features are computerised and it does not need any electric wiring. This mode is programmed using decoders.