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analemma/lemniscate

Posted: Sun Nov 09, 2014 11:02 pm
by Audiendus
Here is an analemma.

And here is a lemniscate.

As you can see, "analemma" and "lemniscate" are both associated (albeit differently) with a figure-of-eight shape. The words do not appear to be etymologically related, so the spelling similarity seems an interesting coincidence.

Any thoughts?

Re: analemma/lemniscate

Posted: Mon Nov 10, 2014 9:51 pm
by bailey66
What is the etymology of the similar letter groups? The "em", and the meaning? This is not somethong I'm at all familiar with but am interested in seeing whete this thread goes.

M.?? Bailey

Re: analemma/lemniscate

Posted: Mon Nov 10, 2014 11:03 pm
by Audiendus
Analemma comes from Latin analemma ("sundial" or "pedestal of a sundial"), from Greek analemma ("pedestal" or "support"), from analambanein ("to support"), from ana ("up") and lambanein ("to take"). Compare dilemma (from Greek for "two assumptions" or "two premises" – two things that are "taken" to be true).

Lemniscate comes from Latin lemniscus and Greek lemniskos ("ribbon").

It is interesting that we have a "lemm" word and a "lemn" word which both have some association with a figure-of-eight shape. It coincidentally brings to mind the competing spellings "dilemma" and "dilemna" (the latter erroneous), although these have nothing to do with a figure-of-eight!

Re: analemma/lemniscate

Posted: Tue Nov 11, 2014 10:16 pm
by Perry Lassiter
Interesting comparison. Also fascinating is the evolution of the horizontal eight on the rotating chart. Math can get interesting to curious and inquiring minds. Mind is merely curious, which leads me to wonder if with limn, we could make lemnade?

Re: analemma/lemniscate

Posted: Sat Nov 15, 2014 9:06 pm
by Philip Hudson
As a mathematician, I make lemonade with lemmas.

Re: analemma/lemniscate

Posted: Wed Mar 30, 2016 4:16 pm
by eberntson
It just occurred to me that the Analemma and the symbol for infinity (∞) are very similar. Could they be related?

Plus, the Ankh could almost be a stylized Analemma?

Just some random thoughts.