On Wed, 10 Sep 2008 05:16:30 -0700 (PDT), PD wrote:

On Sep 9, 9:17*pm, HW@....(Dr. Henri Wilson) wrote:
On Tue, 9 Sep 2008 17:53:06 -0700 (PDT), PD wrote:
On Sep 9, 5:56*pm, HW@....(Dr. Henri Wilson) wrote:
On Tue, 9 Sep 2008 09:40:57 -0700 (PDT), PD wrote:
On Sep 9, 9:07*am, Pentcho Valev wrote:
On Sep 9, 2:27*pm, PD wrote in
sci.physics.relativity:

On Sep 9, 1:01*am, HW@....(Dr. Henri Wilson) wrote:
But, Clever Draper, that is a very specific zombie imagination
acquired after years of singing ("Divine Einstein", "Yes we all
believe in relativity, relativity, relativity" etc.) accompanied by
energetic convulsions. How can you expect a person who has never taken
part in all those worships to imagine "that the physical property does
in fact change, but that no physical process occurs to the object to
change the property"? Be condescending, Clever Draper!

Pentcho Valev


Oh, come, come, Pentcho, you know better! Momentum, velocity, kinetic
energy, electric field, magnetic field -- all these are physical
properties that in fact change with change in reference frame, and
there is no physical process acting on the object to effect that
change. For most of those, Galileo and Newton knew that, and that was
300 years prior to anyone even knowing who Einstein was, let alone
singing songs about him.

Poor confused Diaper has done it again.
He still cannot understand that any physical quantity that has dimension which
include L/T must be frame dependent.

Thus sayeth Henri Wilson, the Soothsayer.
And why are electric and magnetic fields frame dependent?

The fields themselves are NOT.

Of course they are. It's been measured.

The effects they have ARE.

Fields are DEFINED in terms of the effects they have. Please refer to
a freshman textbook.

Fields exist whether or not they produce effects.

Have you ever used iron filing to show 'lines of force' around a bar magnet? Do
you really think the pattern changes every time a differently moving observer
looks at them?

Why, yes, the "lines of force" do change. This is documented.

Diaper, get a bar magnet, some iron filings and a sheet of paper. Create some
magnetic lines of force in the usual manner. Now run past the paper as quickly
as you can and tell me whether or not the pattern changes as you run.

I'm sick of trying to teach you basic physics, Diaper. Why don't you do a
course?

You mean, other than the ones I've taught?

Which reference would you suggest I use for this course, Henri?

Study psychology. You might find out why you love making such a fool of
yourself.


Henri Wilson. ASTC,BSc,DSc(T)
www.users.bigpond.com/hewn/index.htm

There is no food shortage, just an excess of people. Send abortion pills not food aid.