the room's interior surface leading to visual discomfort. The rotating area of a moving fan blade can commonly obstruct the light source when a ceiling fan is positioned underneath an artificial lighting fixture, which can be increasingly distracting to occupants within the space. To ensure that the ceiling fans seamlessly co-exists with the lighting fixtures to avoid strobing, it is recommended that the horizontal separation between the blade and the lighting fixture is maximized. In addition, increasing the vertical distance between the light and the blade will reduce the concentration and frequency of strobing. Never position a light fixture directly above a ceiling fan's blades, and downlight and point source fixtures should be set such that their beam angles don't cross them. Generally, to ensure uniformly adequate light levels, any recessed ceiling lighting and fixtures that emit light above the level of the fan blades should be placed as far away from the ceiling fan as possible Another recommended strategy is to ensure that the light’s angle of dispersion or the field angle is reduced, which minimizes the strobing effect from the fan blades. It is well known that human eyes can detect flicker at low frequencies (between 60 and 90 hertz), but not at high frequencies (beyond 100 hertz), which is also known as non-visible flicker. The strobe effect can have significant physiological and psychological effect on humans. Two test rooms were utilized in an experiment to compare the effects of visual flicker induced the ceiling fan. The findings revealed statistical proof that one out of three cognitive performances (digit-span task) may have been reduced slightly as a result of an increased effect of visual flicker. Parts The key components of a ceiling fan are the following: An electric motor Blades (also known as paddles or wings) usually made from solid wood, plywood, steel, aluminium, MDF or plastic Blade irons (also known as blade brackets, blade arms, blade holders, or flanges), which hold the blades and connect them to the motor. Flywheel, a metal, plastic, or tough rubber double-torus that is attached to the motor shaft and to which the blade irons may be attached. The flywheel inner ring is locked to the shaft by a lock-screw and the blade irons to the outer ring by screws or bolts that feed into tapped metal inserts. Rubber or plastic flywheels may become brittle and break, a common cause of fan