Labels:earth | gazette | newspaper | sky OCR: Nodal Point Nodal Point Noda Point Rod Wrist Arched Truss Transition Rod Tip Butt simple test will demonstrate that rod action is controlled the stiffness of the middle portion. PIOH rod ,parallel to tabel top as the top drawing Raise the butt sharply to flip tip upward, as in cast The butt part will come UP with your hand, but the tip will move in the opposite direction, the striking direction the table taken top 6 your before hand rebounding the and second following test, hoia the rod horizontall and set up side-to. side vibr 'ation with your wrist as shown in the middle drawing, pue obser *ve now the tip fans ou Note the nodal point and the shape of the vibrating middle The diagram on the bottom shows theoretica dynamic "linkage' between the three po. portions Stiffnes the mia -portion ...
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