Thus, the chance of encountering sticky dust particles is better for the rotating ceiling fan blades than for the stationary blades.-Dont know that they do. But it could be due to the fact that they are flat with respect to the ground, and dust tends to fall straight down in the absence of air currents. So when the ceiling fan is not in use,......
In the case of stationary fan blades such impact does not originate and hence the dust particles which may come in contact to the blades by convectional Brownian motion alone would not get smeared on the surface and they soon either fall down by gravity or are swept away by the areal currents.
Further, a moving blade harvests more dust particles than a stationary one by hunting a larger catchment area and also by drawing fresh air (along with dust) from behind, continuously. Thus, the chance of encountering sticky dust particles is better for the rotating ceiling fan blades than for the stationary blades.
Don't know that they do. But it could be due to the fact that they are flat with respect to the ground, and dust tends to fall straight down in the absence of air currents. So when the ceiling fan is not in use, it would collect more dust than one whose blades are vertical.
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Rotating ceiling fan causes rotaen ion of air. As such dust which also rotates alongwith air gets better and convenient place to stick on blades of fan. Another reason is duct accumalted at other places get chance to stck to blade by shifting earlier place
