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<p>[QUOTE=&quot;Conder101, post: 2787633, member: 66&quot;]At the ohm levels you are trying to measure the SLIGHTEST surface oxidation is going to throw off your results so much as to be worthless.</p><p><br /></p><p><br /></p><p>I believe you are off by a factor of 1,000,000.&nbsp; 1.59e-8 ohms/meter times 2.74 meters is .000000044 ohms.&nbsp; That is 44 picoohms.&nbsp; 44 milliohms is .044 ohms.</p><p><br /></p><p>The same length in copper would be 47 picoohms.&nbsp; So you are talking about 3 BILLIONTHS of an ohm over a distance of 2.74 meters.&nbsp; Since the thickness of a coin is in the neighborhood of 2 mm&nbsp; You are talking about trying to measure a difference of .006 billionths of an ohm.[/QUOTE]</p><p><br /></p>

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