On Wed, Dec 12, 2012 at 10:27 AM, Richard Ruquist <yann...@gmail.com> wrote:

> Quantum theory must be based on complex variables and not real numbers or
> quaternions for example.
>

Quaternions are used in Quantum Mechanics particularly when spin is
involved and it's easy to see why. The real numbers are commutative but
there are things in the physical world that are not, so to have a
mathematical theory about them you need something, like quaternions, that
are non-commutative just like the real world is. Sometimes the order in
which something happens makes no difference, 2+4 =4 +2, but in physics
sometimes the order is important, for example, turning a book 90 degrees
around a vertical axis then 90 degrees around a horizontal axis produces a
different result than turning it 90 degrees around a horizontal axis and
then 90 degrees around a vertical axis.

  John K Clark

-- 
You received this message because you are subscribed to the Google Groups 
"Everything List" group.
To post to this group, send email to everything-list@googlegroups.com.
To unsubscribe from this group, send email to 
everything-list+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/everything-list?hl=en.

Reply via email to