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Really fast :-) Like once a day.
Actually, a lot of Galileo's "proofs" we kind of short-circuited because there was a third contemporary system in use for producing navigational tables that was a hybrid of the earth centered system and the sun centered system. In it the earth was stationary with the sun orbiting the earth - but the other planets all orbited the sun. Observationally (except for the not yet discovered Foucault pendulum) there is no difference between the hybrid system and a true "Solar system". The planets have the same phases and the retrograde motions follow the same schedule. The true tipping point came when Kepler found the orbits to be elliptical which eliminated the need for equants.
Bob at PC
-----Original Message-----_______________________________________________
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of curtis osterhoudt
Sent: Tuesday, September 21, 2010 4:25 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] Galileo was wrong
At what rate?
/**************************************
"The four points of the compass be logic, knowledge, wisdom and the
unknown.
Some do bow in that final direction. Others advance upon it. To bow
before the
one is to lose sight of the three. I may submit to the unknown, but
never to the
unknowable." ~~Roger Zelazny, in "Lord of Light"
***************************************/
________________________________
From: "LaMontagne, Bob" <RLAMONT@providence.edu>
To: Forum for Physics Educators <phys-l@carnot.physics.buffalo.edu>
Sent: Tue, September 21, 2010 2:22:31 PM
Subject: Re: [Phys-l] Galileo was wrong
Wouldn't the Foucault pendulum work just as well if the earth were
stationary
and the rest of the universe revolved around it?
Bob at PC
-----Original Message-----claim
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Jeffrey Schnick
Sent: Monday, September 20, 2010 1:10 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] Galileo was wrong
It is my understanding that the Church told Galileo that it would be
okay for him to say that it is much easier to describe/predict the
motion of the planets in an inertial reference frame centered on the
sun
but that he should not say that the sun IS the center of the solar
system / universe. Galileo was championing a good model for
understanding the motions of the planets but he refused to simply
that it was a good model and insisted on claiming that it wasreality.
The arguments against the earth being the center with the starsis
revolving around it were based on measurements of acceleration, e.g.
those that can be made by means of a Foucault pendulum. Is
acceleration
motion?
It seems to me that a reference frame rigidly attached to the earth
acomplicated
valid reference frame. It is not an itertial reference frame and
spacetime, as viewed from that reference frame is much more
than it would be as viewed from an inertial reference frame but thatearth
just makes in an inconvenient reference frame. I don't think that
anyone can or has scientifically proved that one reference frame is
more
real than another. "Which is more real?" is not a physics question.
-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Joseph Bellina
Sent: Monday, September 20, 2010 7:12 AM
To: betwys1@sbcglobal.net; Forum for Physics Educators
Cc: Sharing resources for high school physics;
PHYSLRNR@LISTSERV.BOISESTATE.EDU
Subject: Re: [Phys-l] Galileo was wrong
I think asymmetry in background radiation is evidence that the
ofis moving. What do others think?
I'd say that it is evidence that the earth has a non-zero velocity
relative to a reference frame in which the background radiation is
symmetric.
of
joe
Joseph J. Bellina, Jr. Ph.D.
Emeritus Professor of Physics
Co-Director
Northern Indiana Math Science and Engineering Collaborative
574-276-8294
inquirybellina@comcast.net
On Sep 19, 2010, at 8:04 PM, brian whatcott wrote:
Galileo was a towering figure. It's generally accepted that he
was in
error in several respects - like all of the intellectual giants -
which his most famous is the supposition that the acceleration
ato
ball released down a channel varied in a particular way with theangle
of the wood molding. It's the nature of the game. Do you object
thepeople mentioning that earlier giants made errors, or just when
differencesHumanChurch is involved?available
As to geocentrism: the only observational evidence currently
places Earth at the center of the inhabited universe as far as
like qualities are concerned. Though observing parallax
nowfor
the menstrual variation in Earth's location is difficult, it is
canestablished quite well that Earth shows an annual displacement
consistent with an Earth orbit round a fast moving Sun. So one
discredited,say
with some confidence "il muove".
Then there was Lamarck - another figure who was soon
dont-done...and
now finds some support in the environmental effect now
discovered on
gene-expression and transmission. Well, waddaya know!
Discovery and model making, it is true, never ends.
Brian W
On 9/19/2010 6:18 PM, Bernard Cleyet wrote:
As Dean wrote, "our" work is never done:
Galileo Was Wrong
bc thinks may be a hoax
Original post:
If it didn't conflict with our upcoming NCNAAPT conference
(November 6 in Concord), I would highly recommend the upcoming
"Galileo Was Wrong! The Church was Right!" conference to be held
in the shadow of Notre Dame in South Bend, IN.
No, really; it's a serious geocentrism conference in 2010!
Lest you ever think your work as a science educator is ever
http://phyzblog.blogspot.com/2010/09/galileo-was-wrong-oh-i-
______________________________________________________________________________________________think-so.html
Take care,
Dean
http://phyz.org
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