measuring voltage at a distance with a LASER

Tom Del Rosso

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Jan 28, 2013, 7:44:11 PM1/28/13

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If his guess is right, and if an electric field and a magnetic field both
affect light polarization, how can the probe tell if you're looking at a
high voltage or a high current?

https://www.youtube.com/watch?v=1q2rnKExMiY

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Tom Del Rosso

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Jan 28, 2013, 8:42:31 PM1/28/13

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Tom Del Rosso wrote:
> If his guess is right, and if an electric field and a magnetic field
> both affect light polarization, how can the probe tell if you're
> looking at a high voltage or a high current?
>
> https://www.youtube.com/watch?v=1q2rnKExMiY

Then I noticed the posting date. If it's 3/31 in the US then it's 4/1 in
Austrailia.

Michael A. Terrell

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Jan 28, 2013, 8:43:07 PM1/28/13

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Tom Del Rosso wrote:
>
> If his guess is right, and if an electric field and a magnetic field both
> affect light polarization, how can the probe tell if you're looking at a
> high voltage or a high current?
>
> https://www.youtube.com/watch?v=1q2rnKExMiY

Use the laser to read the bardcodes on each electron, to get the
exact current flow. ;-)

Martin Riddle

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Jan 28, 2013, 10:16:03 PM1/28/13

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"Tom Del Rosso" <tom...@verizon.net.invalid> wrote in message
news:ke79dj$drh$1...@dont-email.me...

I like that fabric they have on the chairs, it's a company in NC.
<http://www.spoonflower.com/fabric/382464>

cheers

Salmon Egg

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Jan 28, 2013, 11:53:48 PM1/28/13

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In article <ke76jm$3hb$1...@dont-email.me>,

"Tom Del Rosso" <tom...@verizon.net.invalid> wrote:

> If his guess is right, and if an electric field and a magnetic field both
> affect light polarization, how can the probe tell if you're looking at a
> high voltage or a high current?
>
> https://www.youtube.com/watch?v=1q2rnKExMiY

Because the details of the hardware are highly obfuscated, I tend to be
skeptical of the entire process.

From what I know of the magnetic Faraday effect and the Pockels effect,
I even more skeptical although a many good buzz words were used. To
start, air would have extremely weak Faraday and Pockels effects. To get
significant signal, you would have to run a rod, albeit an insulating
clear rod with large Verdet and electro-optical constants, to the point
of measurement. It would be the Pockels polariztion shift that measures
the integrated electric field (potential difference) along the path. The
integrated Faraday shift would measure current flowing in a cable.

That is all I have to say for now because I do not wish to expend more
effort on a highly hypothetical measuring instrument. Post when you have
significantly more detailed description on configuration.

--

Sam

Conservatives are against Darwinism but for natural selection.
Liberals are for Darwinism but totally against any selection.

benj

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Jan 29, 2013, 2:29:13 PM1/29/13

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On Mon, 28 Jan 2013 22:16:03 -0500, Martin Riddle wrote:

> I like that fabric they have on the chairs, it's a company in NC.
> <http://www.spoonflower.com/fabric/382464>

I noticed that too. While I'm not a huge fan of schematic diagrams, let's
just say that this cloth has a certain "decorator potential"!