[HPforGrownups] Re: Changes I would make

[Margaret Dean]

No: HPFGUIDX 177464

Geoff Bannister wrote:
> 
> --- In HPforGrownups at yahoogroups.com, Random832 <random832 at ...> wrote:

> > And of course, all this is ignoring the fact that the characteristic
> > pattern could very well be a spiral rather than a helix.
> 
> Geoff:
> One definition from the Web is:
> "In mathematics, a spiral is a curve which turns around some
> central point or axis, getting progressively closer to or farther
> from it, depending on which way one follows the curve."
> 
> ...while a second is:
> 
> "A plane curve traced by a point circling about the center but
> at increasing distances from the centre". As has been stated
> earlier in the thread, it is a TWO-dimensional curve.
> 
> So, unless the steam coming from the Amortentia potion which
> Hermione is describing comes off and stays flat just above the
> surface - like the grooves in a gramophone record - which it
> isn't doing, then it is technically a helix but is invariably called
> 'spiralling'.

Or it could be forming a spiral pattern in a plane perpendicular
to the surface of the potion.  Can't tell without seeing it.


--Margaret Dean
  <margdean at erols.com>