>>> Superconductors are like quantum mechanics, they don't follow the
>>> rules that you are used to for other things.
>>
>> If that's true, then it is at least a possibility that some classic
>> electric concepts like resistance are not anymore useful in that realm
>
> Well, yes, of course.  Ohm's law doesn't apply particularly well to
> anything semiconductor (except piecewise over small ranges, where it is
> still useful!)  And there are lots of semiconductor devices that
> exhibit regions where the meaured resistance will be negative...

The "concept of resistance" is not the same as Ohm's law. As you say, there
are many devices with resistances that are a function of voltage or current
(i.e. that don't follow Ohm's law), yet the concept of resistance still
gets applied to them (as can be seen when you talk about "negative
resistance").

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body