sci.physics.electromag

"maxwell" wrote in message
news:bbf0658f-d0a9-483b-a643-98871cc2ae89@i12g2000prf.googlegroups.com...
On Mar 20, 11:51 pm, "FrediFizzx" wrote:
> "maxwell" wrote in message
>
> news:22a9b163-87e8-4a83-a2e1-21a176f97f13@u10g2000prn.googlegroups.com...
> On Mar 16, 9:14 am, Benj wrote:
>
> > On Mar 16, 2:46 am, khrapko...@hotmail.com wrote:
>
> > > Dear Benj: What's the matter? What's the thread? Fields are
> > > obviously
> > > real and mathematics is an idea.
> > > Radi
>
> > Dear Radi,
> > Forces are obviously real and fields are a mathematical idea.
> > Benj
>
> Sorry, guys, even forces also not real. You are just extrapolating
> from the time-averaged muscular sensations we all experience. Force
> is also a mathematically defined concept (see Newton's Principia).
> --------------------------------
>
> Maxwell, you are quickly going off the deep end. ;-) Pulleys and
> weights can be used to measure forces; no muscles need to be involved.
> The mathematical description of forces seem to fit the reality very
> well.
>
> Best,
>
> Fred Diether
> Co-moderator sci.physics.foundations

Not at all. Pulleys etc rely on a theory of gravity that IS linked to
our macro sensations of effort. Incidentally, why do our muscles get
tired when they hold up a weight that never moves? No displacement,
no work, no energy - right?
------------------------------

Well, it doesn't have to necessarily be "linked to macro sensations of
effort". The apple fell on Newton's head. ;-) Macroscopically forces
are pretty real. Now the concept of energy gets to be fairly
mathematical. But fundamentally it all boils down to the interactions
of quantum objects. Doesn't it?

Best,

Fred Diether
Co-moderator sci.physics.foundations