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On 24/06/2025 17:11, Paul S Person wrote:I've played with natural lodestones - they weren'tOn Mon, 23 Jun 2025 23:39:44 -0700, The Horny Goat <lcraver@home.ca>Do you mean to recycle as iron?
wrote:
>On Thu, 29 May 2025 09:55:09 +0100, Robert Carnegie>
<rja.carnegie@gmail.com> wrote:
>Also, as Arthur C. Clarke revealed to us,>
"Any sufficiently advanced technology is
indistinguishable from magic." So for instance,
some miracles could be performed with concealed
magnets. Especially if someone doesn't know
that magnets exist.
You mean anybody in the time of the Roman Empire (aka 'the life and
times of Jesus') knew what a magnet was?
According to
<https://en.wikipedia.org/wiki/Magnet#Discovery_and_development>,
knowledge of "loadstones" goes back 2500 years. And Pliny's /Natural
History/ discusses them
<https://en.wikipedia.org/wiki/Natural_History_(Pliny)#Mineralogy>
>
Granted, this was a bit later on (77 to 79 AD). But only a bit.
>
So I would say it is possible that educated (in the Roman/Greek sense)
persons were aware of magnets at the time you designated.
>I think most of us as children did all kinds of things with magnets to>
impress our friends. My favorite trick was holding a magnet under a
piece of paper to make another magnetic jump into the air (typically
no more than 1 or 2 inches) by means of repulsion.
>
My favorite magnets were the 3/4" round magnets (by roughly 3/16"
thick) that were suitable for the above types of tricks.
I am wondering whether my flat refrigerator magnets, of which I have
an abundance, are recyclable or not -- that is, if they are magnetic
enough to count.
<https://magnummagnetics.com/blog/how-are-magnets-made/>
is a document I've just failed to understand
on the subject.
I think the answer is "it depends", but also
that magnets in your recycling waste will cause
trouble, such as sticking to machinery and
jamming it, and if you hypothetically ask a
recycling service whether they accept "x" for
recycling, and thry haven't asked for "x",
then just from caution, the answer will be no.
I think rekatively little heat will remove
magnetism, but the magnetasvarevstill made
or whatever.
And twentieth century magnets probably are
much more powerful than natural ones?
While on this subject, I'll add that glass
rdcycling usually accepts bottles and jars,
but not table glassware, plates, cooking
dishes, or windows. Each may use a different
rdcipe. Where the "Nutella" jar which can be
re-used as a beaker stands, I don't know, but
I'll guess that as a precaution, that also will
be "no".
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