To determine whether a chemical reaction is spontaneous we must calculate the change in total entropy of the chemical system and its surroundings. This can be done directly using Î´ S Â° sys and âÎ´HÂ°/ T or indirectly using the change in Gibbs free energy Î´ G Â°.
Infield shift. The infield shift is a generic term used in baseball to describe an extreme defensive realignment from the standard positions to blanket one side of the field or another. Used almost exclusively against left-handed batters, it is designed to protect against extra base hits pulled hard into the gaps between the fielders on the right side.
There are a few commands that every catcher needs to be comfortable with to direct the play â whether the infield should let the ball through or cut it off, and to which base: 1  Let it through: This easy command tells the infield that the throw is on line and the catcher is willing to try for the play at the plate.