For interest sake 2
While a mechanical engineer is working on a propeller based aeroplane under a light bulb connected to a utility at during night time. This light is causing a safety hazard for the worker because the light
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
The sinusoidal waveform supplying the light causes a flickering of 20ms, faster than the response time of the human eye. This might not seem like an issue, but the propeller blades could be rotating in harmony with the flickering of the light globe, causing an illusion of a stationary blade!