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.
Hence, in order to work properly, a vertical 1/4-wave radiator needs a counterpoise. GROUND RADIALS: In a classic, ground mounted 1/4-wave vertical antenna this counterpoise is the ground below the antenna. The good Mother Earth acts as an infinite size reservoir that provides the necessary electrical charge to the radiator to keep the feedpoint electrically neutral.