POV-Ray : Newsgroups : povray.off-topic : Scalar is a scaler : Re: Scalar is a scaler Server Time
1 Jun 2023 01:55:24 EDT (-0400)
  Re: Scalar is a scaler  
From: JimT
Date: 4 Nov 2019 10:40:00
Message: <web.5dc045c5cd077019be7517870@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> Scalar values refer to scaling.
> According to a citation in the Oxford English Dictionary the first recorded
> usage of the term "scalar" in English came with W. R. Hamilton in 1846,
> referring to the real part of a quaternion:
> "The algebraically real part may receive, according to the question in which it
> occurs, all values contained on the one scale of progression of numbers from
> negative to positive infinity; we shall call it therefore the scalar part."
> Scala is the latin word for ladder, the English word scale comes from it
> and scalar is derivative from scalaris which is an adjective form of scala.
I did 'O' level latin, but didn't know/remember about scalaris (ladderlike) so
thanks. I now know why it is called a scalar.
> From comments here:
> https://www.youtube.com/watch?v=fNk_zzaMoSs&list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab
I'd worry about learning linear algebra from this series of films. I've only
looked at 2 minutes of the first one but some concepts seemed to be confused. In
particular, he didn't seem to want to distinguish between the co-ordinate (x,y)
which is in no way re-locatable and the vector [x,y]^T which is.
> juicy tidbits:
> https://github.com/3b1b
> :O

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