On 7/11/2012 5:15 AM, Frank Stellmach wrote:
This is the worst realized electrical unit, i.e. the 'mise en pratique' is difficult to an error level of about 1e-7 only.
On 7/11/2012 6:50 PM, Bob Smither wrote:
I may be off here, but I doubt that thermal (Johnson) noise would limit the precision of current readings. A one ohm resistor in a 1 Hz bandwidth would be 0.13 nV or 0.13 ppm of the 1 mV reading.
It seems you just showed that it does (limit the precision). -- Mike _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
