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"Robert Morein" wrote in message
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" wrote in message
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"Robert Morein" wrote in message
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"Arny Krueger" wrote in message
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"Robert Morein" wrote in message


From
http://www.scescape.net/~woods/elements/ruthenium.html

"The metal is one of the most effective hardeners for
platinum and palladium, and is alloyed with these metals
to make electrical contacts for severe wear resistance."

The extreme hardness of these contacts means that since
perfect flatness cannot be achieved in relay contacts,
such contact is limted to a discrete number of points.

Would anyone care to guess how many points of contact can
exist between two nonflat surfaces that are not soft
enough to conform?

Irrelevant to the relay contacts used in the ABX RM2
comparator, because those contacts are not solid ruthenium.
Instead, the ruthenium is a thin plated layer desposited
over softer copper contacts.

Since the question is irrelevant, there is no logical
purpose in answering it.

Besides, its rhetorical. That would make two good reasons
not to answer it.

It is very important, because the actual surface area that is in
physical
contact is extremely small. This makes the bulk conductivity of
ruthenium
important.

Prove it makes an audible difference.

Prove it doesn't.

Can't prove a negative.


BINGO!!!!!!!!!!!!!!!!!!!!
CASE CLOSED!!!!!!!!!!!!!!

You can't prove that there are not differences.