Causes of T-Wave Abnormality on an EKG. Abnormal T-Waves on an EKG aren't necessarily an indicator of a problem. However, they could cause your doctor to want to do further testing. The heart has its independent electrical systemâ a network of nerves located throughout all its chambers, which mediate electrical impulses that enable chambers to contract in a synchronized rhythm and sequence.
Chronometric definition, a timepiece or timing device with a special mechanism for ensuring and adjusting its accuracy, for use in determining longitude at sea or for any purpose where very exact measurement of time is required. See more.
A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch.A basic chronograph has an independent sweep second hand; it can be started, stopped, and returned to zero by successive pressure on the stem.Less simple chronographs use additional complications and can have multiple independent hands to measure seconds, minutes, hours and even tenths of a second. simple watch, without the stopwatch functionality, can be certified a chronometer, as can a clock, for example a ship's clock used for navigation. Originally the term chronograph was mainly used in connection with artillery and the velocity of missiles.