Al Brooks caught something unusual and fascinating when he decided to check his security footage at his Austin, Texas home.
To his delighted surprise, a tiny bird perfectly in sync with the frame rate of his camera made an appearance and looked as though he was hovering over Brooks’ driveway.
This sort of thing is known as a stroboscopic illusion, or wagon-wheel effect, the same sort of effect you see in airplane propeller videos or when looking at wheels on a car.
The same thing happens when it’s synced to a helicopters rotor as well.
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