They are worn on the upper arm and they measure heat, moisture and movement to get a picture of activity.
Above him he heard the purr of engines, the slow, measured movement of cars in procession.
Engineers designed and built these units originally to measure movement of airplane parts as they were cycled during testing.
Modest, measured movement allows them to be touching character pieces.
Eye trackers which precisely measure the eye's position and movement are also commonly used to determine fixation points in perception experiments.
The competition is one of measuring the nage's form and movement with uke, rather than a competition between two opponents.
Simple mechanical types (such as illustrated to the left) are used in civil engineering to measure movement of buildings, foundations, and other structures.
The hardware is a little black box called the SenseCam, which contains a digital camera and an accelerometer to measure movement.
This one dimension measured "movement" towards, against and away from people.
Because there is nothing to measure movement against!