(AT LEFT): smaller nuclei, wider channel, slower flow, weaker
"Venturi" effect, less "suction", and
often less metal tensile strength.
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(AT MIDDLE): larger
nuclei (with their increased cross sectional area), restrict
channel width, cause "electric fluid" to flow faster. The
resulting Venturi effect can lead to greater "suction"
or "attraction", and thus, to greater metal tensile strength.
(Incidentally, slightly disordered, not quite in-line nuclei,
can cause similar effect, also.) |