Why do the tyres of a fast moving car seem to be moving or rotating backwards?

Question

Please answer using simple terms

Answer 1

You are watching them on a TV or movie screen and are seeing a consecutive set of snapshots taken one after another with a certain time between snapshots (which is what a movie camera does). The TV or the movie projector shows those snapshots one after the other and your eye thinks things on the screen are moving. For TV the video camera takes 24 pictures per second. On your TV screen you are seeing 30 pictures per second. When you see a wheel going around the photographed tire pictures are going slower than the TV image tire pictures. That makes the same spot on a tire seem to be back from where it should be and it will keep going back at that car speed.

Answer 2

the attention sees a chain of stills as a shifting image because of the fact of eyes tend to keep a picture quickly inflicting a phenomena referred to as "Flicker Fusion". Flicker Fusion is the minimum discernable fee of substitute by making use of the human eye. In itself it is no longer a team of snapshots, besides the fact that it is the slow fee of thought of substitute that facilitates a team of snapshots to combination into non-end action. The fusion fee is distinctive in distinctive areas of the attention (the middle reduces strobe better than the peripheral). rather its to do with Flicker Fusion fee, yet its additionally to do with perceptions of a shifting merchandise. in case you look heavily, you purely be conscious the "reversing" result whilst the rotating merchandise is accelerating or decelerating. You techniques sees a rotating merchandise, and interprets the seen siganls so as which you notice it as rotating. because of the fact the object spins speedier, there's a lag between you thought an the rather substitute of velocity, so which you techniques is consistently reinterpreting the incoming stimulus, yet at somepoint the the fees of substitute (of the rotating merchandise, the mounted flicker fusion fee, and the changing thought of you techniques) all reason a thought of reversing of the products rotation. in case you look heavily, it does not take place in one leap, rather the object seems to slowly beginning spinning in the different course and speedier and speedier in that opposite course. If the object then slows down is spinning to it unique velocity, the reversed spinning seem to decelerate and then end (ie at last the object seems to be spinning in it suitable course). As you have have been given guessed this involved me for an prolonged time, so I did some experimenting.

Answer 3

I too have seen this phenomenon, and not just on TV or movies....Quite frankly, I personally think it's just an obstacle allusion!

Answer 4

Yeah, its not just on TV. And it only happens at certain speeds. Dont really know why though.