Understanding inverse FFT results

Rune Allnor wrote:
> Ouch! That leaves me out. I know I've seen my father's slide rule
> in a box where he keeps his old stuff, but I never saw it used.
> 
> Rune
> 

Time spent playing with a slide rule is time well spent.  This page has 
some PDF's of paper slide rules.

http://chris.gillings.com/collect/slide/index.html

You can download them, print them, cut them out, assemble them, and then 
use them.  There are hundreds of websites with slide rule tutorials.

-- 
Jim Thomas            Principal Applications Engineer  Bittware, Inc
jthomas@bittware.com  http://www.bittware.com    (603) 226-0404 x536
Quidquid latine dictum sit, altum sonatur.
Whatever is said in Latin sounds profound.

Rune Allnor wrote:

  ...

> Ouch! That leaves me out. I know I've seen my father's slide rule
> in a box where he keeps his old stuff, but I never saw it used.

It is simple and elegant. What's more, there are some startlingly
elegant procedures you can learn that will make you feel smug. For
example, calculating sqrt(a^2 + b^2) and phase angle with one push of
the stick and one alignment of the cursor.

I can teach you how to use one and to do that trick even by email if you
like. (You need trig scaled to do trig. Duh!) My large Dietzgen rule is
a "Maniphase Multiplex (Log Log Vector)". The Keuffel and Esser
equivalent is a "Log Log Duplex Vector", the archtypical engineering
rule in my time.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������

Jerry Avins wrote:

> Rune Allnor wrote:
> 
>   ...
> 
> 
>>Ouch! That leaves me out. I know I've seen my father's slide rule
>>in a box where he keeps his old stuff, but I never saw it used.
> 
> 
> It is simple and elegant. What's more, there are some startlingly
> elegant procedures you can learn that will make you feel smug. For
> example, calculating sqrt(a^2 + b^2) and phase angle with one push of
> the stick and one alignment of the cursor.

One push after an initial set-up. I could argue that that's two pushes.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������

"Jim Thomas" <jthomas@bittware.com> wrote in message
news:110k88lpnotvr1b@corp.supernews.com...
> Rune Allnor wrote:
> > Ouch! That leaves me out. I know I've seen my father's slide rule
> > in a box where he keeps his old stuff, but I never saw it used.
> >
> > Rune
> >
>
> Time spent playing with a slide rule is time well spent.  This page has
> some PDF's of paper slide rules.
>
> http://chris.gillings.com/collect/slide/index.html

FYI, fred harris is a collector of old slide rules. So if you have a rare
piece he might be interested in chatting with you.

Cheers
Bhaskar