[Avodah] running creates electricity

[Micha Berger via Avodah]

On Mon, Oct 31, 2016 at 11:34:28PM +0200, Simon Montagu wrote:
: R. Waldenberg's senif that "there is no precedent for these sparks in the
: labor performed during the construction and functioning of the tabernacle"
...

I presume the ZE means that unlike historical cases like sparks thrown by
a burning object, electrical sparks are no glowing substance; there is
no material glowing. Sparks in a smith's forge are really tiny gechalos
shel mateches. It's only nitzotzos by homonym.

: presumably still applies to solar cells, triboelectric nanogenerators, and
: elongated supercapacitors.

That would have to be proven casewise. Eg no one ran electricity through
a wire until it glowed, but it's still a gacheles shel mateches.

I still think what you waid was true, since the ZE doesn't hold of molid,
he would presumably have no problem with any of those, nor batteries. But
I wanted to highlight a skipped step.

(I was primarily posting to explain what I think the ZE means by emphasizing
the lack of parallel in building the mishkan.)

Tir'u baTov!
-Micha

-- 
Micha Berger             "I hear, then I forget; I see, then I remember;
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