An electrocardiogram (EKG or ECG) is a test that checks for problems with the electrical activity of your heart. An EKG shows the heart's electrical activity as line tracings on paper. The spikes and dips in the tracings are called waves. The heart is a muscular pump made up of four chambers .
In the official rules for Major League Baseball, it is stated that the outfield fence should be at least 250 feet from home plate. A distance of 325 feet or more along the foul lines and 400 feet or more to center field has since become mandatory for any new stadiums.
The catcherâs box is 1.3m x 2.4m. The distance from home plate to the outfield fence must be at least 98m along the left and right field foul lines and 122m at the centre outfield. modified field is used for Little League and Under 14. The pitcherâs mound is 18.44m from home plate and located in the centre of the infield. It is a 5.5m mound of dirt no higher than 25.4cm. Near the centre of the mound is the pitching rubber, a rectangular slab measuring 61cm x 15cm.