RBI HYDRAULIC BREAKER USER MANUAL. 2. How the Tool Breaks Rock. The following paragraphs describe what happens to break rock when the piston strikes the tool. (A)Contact-Initial Compression Stress Wave. When the piston (1) strikes the top of the tool (2), it sends a compressive stress wave (3) down to the.
And Counter means counter, exactly as in English. Poise means weight. So the word literally means counterweight and that is what a counterpoise is in an antenna system, where it was originally used. Simply put, a ground plane that the antenna system could mirror itself in.
âThose antennas are used as part of the U.S. Coast Guard communication system and have been for years.â âWe suppose they are radio antennas beaming away their signal into the low grey sky.â âAnd on the roof there was a red and blue light bar with a whole slew of antennas sticking out from the top.â