The FIRST Program Guide - Issued June 30 to July 5th, 1941. The first two TV stations licensed for commercial broadcasting were New Yorks WNBT (which later became WNBC) and WCBW. They were both licensed on July 1, 1941. Earlier broadcasting was considered 'experimental'.
Definition of gage. 1  1 : a token of defiance; specifically : a glove or cap cast on the ground to be taken up by an opponent as a pledge of combat. 2  2 : something deposited as a pledge of performance.
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure)[a] is the pressure relative to the ambient pressure.