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MeasurementBlues
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Faraday's discovery
MeasurementBlues   9/2/2014 10:15:44 AM
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MeasurementBlues
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Tutorial on Maxwell's equiations
MeasurementBlues   9/2/2014 10:13:45 AM
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There are many out there, but here's one.

http://techonline.com/electrical-engineers/education-training/tech-papers/4404742/Tutorial-on-Maxwells-Equations-Part-1

MeasurementBlues
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Re: Keithley?
MeasurementBlues   9/2/2014 10:08:43 AM
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David,

Yes, it's the same Joseph Keithley, who started int instrument company after WWII.

is this Keithley anything to do with the instrument company of the same name?

kfield
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Re: Degrees of genius
kfield   8/31/2014 11:18:17 AM
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@Bert33206 "In my book, anyone who can intuit something previously unknown, and then go about the difficult task of proving it with instruments of their own making, qualifies as some sort of genius."

 

I'm agog at the level of imagination it must take as well - especially when several enablers have to be created as well in order to realize the invention. (Ie the telegraph)

Wnderer
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Oliver Heaviside
Wnderer   8/29/2014 9:19:30 AM
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Before Oliver Heaviside, electricity was the province of scientists and inventors. After Heaviside, there was electrical engineering. He changed Maxwell's equations from twenty to the four we know, created the engineering mathmatics we spend semesters in college learning and defined the transmission line equations used in power distribution and printed circuit boards.


Heaviside's masterworks are free online at the internet archive. It's amazing how much he predicts the theory of relativity and yet could not accept it and said it must  be some kind of joke. In that way, Einstein ended his career, because the scientific world he was mastering was suddenly gone.

_hm
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Our school laboratory
_hm   8/28/2014 12:12:01 PM
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Our school laboratory was always filled with portrait and little story about this great people. Since our childhood we always venerated them and read about them in our lab itself.

I am not sure about current school laboratory. But they can do this easiliy with digial frames and TV displays.

Bert22306
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Degrees of genius
Bert22306   8/27/2014 6:03:45 PM
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In my book, anyone who can intuit something previously unknown, and then go about the difficult task of proving it with instruments of their own making, qualifies as some sort of genius.

But I agree that Maxwell did show that extra bit of insight, that tied together Gauss' Laws, Faraday's Law, and Ampere's Law, in one beautifully symmetric package. I laughed when our sophomore year physics book said that the symmetry of Maxwell's equations was "good for the soul." Honest, its very words. But there's something to that.

We all take these for granted now. Even, for instance, that recent discussion of transmission lines. These concepts are pervasive in everything we do.

David Ashton
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Keithley?
David Ashton   8/27/2014 4:56:12 PM
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Martin, just wondering... is this Keithley anything to do with the instrument company of the same name?

perl_geek
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Arms and legs
perl_geek   8/27/2014 4:23:14 PM
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What a shame it's so eye-wateringly expensive.  CDN $138.99 for a print-on-demand paperback.

(Look for the ISBN 978-0-7803-1193-0 on Wiley's site. I can't post the URL at the moment.)

Sheetal.Pandey
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Re: Lord Kelvin and others
Sheetal.Pandey   8/27/2014 1:35:19 PM
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Earlier when these hardware innovation were done, the scientist name got associated with those inventions but these days engineers who invent or write the app are hardly given individual credit. Its just the company's name.

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