Electrical Resitance

George Herold wrote in news: snipped-for-privacy@c16g2000yqi.googlegroups.com:

cut Well, then you should NOT use diodes, because they stick all sorts of metal and semiconductors together.

Reply to
Sjouke Burry
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I'm just not following what that has to do with temperature dependence?

Reply to
bloggs.fredbloggs.fred

temperature?

What might happen to the specific resistance of pure Pb when you increase the temperature by a couple of °C, from, say, 4.2K to 6.2K?

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward" 
speff@interlog.com             Info for manufacturers: http://www.trexon.com 
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

** The OP is a very obvious troll - so TTman's reply is both appropriate & polite.

OTOH, yours was totally smartarses and pig arrogant.

** When Google likely has the needed info - then that is where to go first.

OTOH - you can go straight into hell.

.... Phil

Reply to
Phil Allison

temperature?

--
I can find no reference to that, but since Pb has a transition 
temperature of 7.175K,  I'd expect its resitivity to remain zero at 
any temperature below that. 

Am I missing something?
Reply to
John Fields

temperature?

Hi John, I think Spehro was 'commenting' on your "Without exception" statement. If you'd said, "In general", instead....

George H.

Reply to
George Herold

values,

testing of metals by means of resistivity, tempco, and thermoelectric properties. They're expecting absolutely wild deviations with just parts per gazillion impurity concentrations...

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Copper's residual resistivity is very greatly affected by magnetic impurities. Oxygen annealing to get rid of the unoxidized Fe improves the low temperature resistivity by some enormous factor, like turning 4N into the equivalent of 6N.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs

values,

testing of metals by means of resistivity, tempco, and thermoelectric properties. They're expecting absolutely wild deviations with just parts per gazillion impurity concentrations...

formatting link

But all of the expensive wire is "oxygen free". ;-)

Reply to
krw

values,

testing of metals by means of resistivity, tempco, and thermoelectric properties. They're expecting absolutely wild deviations with just parts per gazillion impurity concentrations...

formatting link

Most audiophools freeze solid somewhere above 77K.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs

temperature?

So it increases by 3%, then :-)

Reply to
Ralph Barone

temperature?

LOL

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward" 
speff@interlog.com             Info for manufacturers: http://www.trexon.com 
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

temperature?

Yes, for certain values of zero.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

other values,

purity testing of metals by means of resistivity, tempco, and thermoelectric properties. They're expecting absolutely wild deviations with just parts per gazillion impurity concentrations...

The hubris of your narcissism known no bounds.

?-)

Reply to
josephkk

values,

testing of metals by means of resistivity, tempco, and thermoelectric properties. They're expecting absolutely wild deviations with just parts per gazillion impurity concentrations...

Lighten up, you sour old fart.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

Now THAT, folks, is PKB!

Reply to
StickThatInYourPipeAndSmokeIt

Offload your narcissism, so that you are not quite damn annoying. You are a lot like a child that has been sprayed by a skunk and is proud of it and won't bath.

?-)

Reply to
josephkk

Bath?

Design some electronics. Post it here. Everybody will feel better, especially you.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

are

and

especially

Topic changing a bit? Coward. Address your narcissism problem.

?-)

Reply to
josephkk

The topic of this group is electronic design. Address your can't-design problems.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

I swear I haven't seen any other groups as raw as this one.

Rick

Reply to
rickman

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