>
>measures wrote:
>>Ian wrote:
>>>...... Pure copper actually has a higher conductivity than silver,
>>
>>? Not when I took Physics of Electricity, Ian. . . According to
>>Frederick Terman, at 20-degrees C, silver has a resistance of 1.629
>>u-ohm per cm^3. Copper has a resistance of 1.724 u-ohm per cm^3.
>>
>
>You're right, Rich - but only for the pure materials.
>
>..........
>
>BTW, the units of resistivity are ohm-cm (that's cm^2 of cross-sectional
>area on the top line of the fraction, divided by cm of conductor
>length).
>
? Micro-ohms per cubic centimeter is a standard method of measuring
resistance. Anyone who has taken a college level course that covered
this subject - and managed to stay awake - should be aware of it.
- Rich..., 805.386.3734, www.vcnet.com/measures.
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|