So far, it has thus proved difficult to observe in experimental settings. ...

To begin with, when we fixate on a pattern, it momentarily remains on our retinas as an after-image. One theory is that small, involuntary eye movements cause this ghost image to overlap with the ...

Helmholtz2 described how, when looking at a pattern consisting of black and white concentric circles, and thus similar to one of Dr. MacKay's, a complicated system of darker and brighter radial ...

Decelerating is all about slowing down to a controlled stop. For landing jumps, it's best to start small—around 6 to 12 inches should suffice, he says. Rotation can be down through throwing balls, ...