In 350 BC, Aristotle reported seeing illusory movement after staring at a constantly moving stimulus. Later coined the "waterfall illusion," scientists are still investigating the properties of motion ...

Range of motion (ROM) refers to how far you can move or stretch a part of your body, such as a joint or a muscle. It’s different for each of us. For example, some people can do complete splits, but ...

Starting with Newton’s first law of motion, we delve into how objects behave when they are at rest or in uniform motion. The second law unravels the relationship between mass, acceleration and ...