Gaussian Resistors

[grenert]

Robrenz, those clips are the same ones that Agilent sells for $45 a pair!   
http://www.home.agilent.com/agilent/product.jspx?nid=-536902470.536880336.00&lc=eng&cc=US

Would you mind explaining how reversing the current changes the thermal EMF?  I thought the EMF is the result of dissimilar metals in contact, and would not be affected by the current direction.

[robrenz]

Robrenz, those clips are the same ones that Agilent sells for $45 a pair!   
http://www.home.agilent.com/agilent/product.jspx?nid=-536902470.536880336.00&lc=eng&cc=US

Would you mind explaining how reversing the current changes the thermal EMF?  I thought the EMF is the result of dissimilar metals in contact, and would not be affected by the current direction.

It does not change the thermal emf.

read Section 3-19 on current reversal method.  The whole book is excellent.

http://www.keithley.com/knowledgecenter/knowledgecenter_pdf/LowLevMsHandbk_1.pdf

[scopeman]

Hello Dave,

You probably know this but there is a statistics add in for Excel that will do all of the statistical analysis for you. Just look under Tools> Data Analysis > Descriptive Statistics.

It is a free add in that most Excel users never turn on.

I find it quite useful.

Sam