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Greetings.
What would be the name of the attached shape ?
I mean, simple term, for such thing.
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Le_Forgeron <jgr### [at] free fr> wrote:
> Greetings.
>
> What would be the name of the attached shape ?
>
> I mean, simple term, for such thing.
Hyperboloid?
Catenoid (minimal surface)?
Pulley (wheel)?
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Le_Forgeron <jgr### [at] freefr> wrote:
>
> What would be the name of the attached shape ?
Spool? Reel?
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Op 06/09/2020 om 16:42 schreef Le_Forgeron:
> Greetings.
>
> What would be the name of the attached shape ?
>
> I mean, simple term, for such thing.
>
My first thought: pulley.
--
Thomas
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Thomas de Groot <tho### [at] degrootorg> wrote:
> My first thought: pulley.
My third thought was that it would be what was left when one subtracted away a
torus.
So, a donut hole, or an anti-torus.
Maybe something akin to a "munchkin". :D
There apparently _IS_ an antitorus, but I can't find a clear description or
illustration of what exactly it is.
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Le 07/09/2020 à 19:28, Bald Eagle a écrit :
> Thomas de Groot <tho### [at] degrootorg> wrote:
>
>> My first thought: pulley.
>
> My third thought was that it would be what was left when one subtracted away a
> torus.
> So, a donut hole, or an anti-torus.
> Maybe something akin to a "munchkin". :D
>
> There apparently _IS_ an antitorus, but I can't find a clear description or
> illustration of what exactly it is.
I knew there was an antisphere, an "object" with a constant negative
curvature. (found in pseudosphere in wolfram)
https://mathworld.wolfram.com/Pseudosphere.html
And Thomas is right, the hole of a torus is involved.
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https://en.wikipedia.org/wiki/Doughnut#Holes
.... many chains offer their own variety, some with their own brand names such as
"Munchkins" from Dunkin' Donuts and "Timbits" from Tim Hortons.
"Grimbit" :D
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Spool
bobbin
reel
(tire) rim
....
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