11.   A test that measures the speed at which red blood cells settle out of a blood sample helps doctors to make a diagnosis.

12.   By combining sequences of these X-ray images, Remington and Drake can precisely measure the speed of the shock and the mixing of the different layers.

13.   Foot speed is measured by stopwatch from when a pitch crosses home plate to when the hitter reaches first base.

14.   High-frequency sound waves are aimed at the artery from outside the body to measure the speed of blood flow.

15.   In Europe, the cars measure speed in kilometers an hour, instead of miles an hour.

16.   It uses standard Doppler radar to measure the speed of the ball through the mitt and claims to be as reliable as Roger Clemens in the clutch.

17.   It uses standard Doppler radar to measure the speed of the ball through the mitt and, Dilz said, is as reliable as Roger Clemens in the clutch.

18.   James found support for his earthworm findings, which have not been published, in a Dutch study that measured the speed at which earthworm populations enlarge their territory.

19.   Lasers are used to measure the speed of optical communication devices.

20.   Like processors, buses have clock speeds measured in megahertz.