| Topic: |
Science > Physics |
| User: |
"George" |
| Date: |
14 Oct 2005 07:13:35 AM |
| Object: |
Two Stars with same mass |
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
--
--
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 10:08:05 AM |
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"George" <georgekinley@hotmail.com> wrote in message
news:xn0e8hiqrb9xun000@news.europe.nokia.com...
| Hi,
| If two starts with same mass but different size why will the one with
| smaller size will have greater gravity
It didn't start.
Androcles.
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| User: "Uncle Al" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 12:45:07 PM |
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George wrote:
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
At a given radius from a center of mass and external to the surface,
they will have identical gravitation. If they are packed inside their
Schwarzschild radii they will have identical external gravitation.
You won't see differences unless they are spinning, and
gravitomagnetic corrections are small.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 01:40:31 PM |
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"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:434FEEA3.DC1BA1E3@hate.spam.net...
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Ignorant arsehole, you have to find black hole first.
Androcles.
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| User: "Uncle Al" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 02:05:29 PM |
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Androcles wrote:
"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:434FEEA3.DC1BA1E3@hate.spam.net...
|
Ignorant arsehole, you have to find black hole first.
Androcles.
At a given radius from a center of mass and external to the surface,
they will have identical gravitation. If they are packed inside their
Schwarzschild radii they will have identical external gravitation.
You won't see differences unless they are spinning, and
gravitomagnetic corrections are small.
Point out the error and propose a correction, psychotic kneejerk
idiot.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 05:43:04 PM |
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"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:43500179.646205A9@hate.spam.net...
| Androcles wrote:
| >
| > "Uncle Al" <UncleAl0@hate.spam.net> wrote in message
| > news:434FEEA3.DC1BA1E3@hate.spam.net...
| > |
| > Ignorant arsehole, you have to find black hole first.
| > Androcles.
|
| > At a given radius from a center of mass and external to the surface,
| > they will have identical gravitation. If they are packed inside
their
| > Schwarzschild radii they will have identical external gravitation.
| > You won't see differences unless they are spinning, and
| > gravitomagnetic corrections are small.
|
| Point out the error and propose a correction, psychotic kneejerk
| idiot.
Stoopid *****, if you follow thread from January 1999 when
Androcles posted the original blunder you will see an increasingly
hysterical and vicious collusion of bitter little people like Uncle Al
who deny the process of scientific inquiry and are utterly rabid
about Einstein being right. They literally drool foaming spit.
They don't care about the results. They scream, threaten, and attempt
assassination to prevent the truth coming out. What do they fear?
They fear their own exposure as the small people they are.
Einstein:
½[tau(0,0,0,t)+tau(0,0,0,t+x'/(c-v)+x'/(c+v))] = tau(x',0,0,t+x'/(c-v))
Reference:
http://www.fourmilab.ch/etexts/einstein/specrel/www/
Proof Poe cannot read:
"Where in that equation did (c+v) occur?" -- Poe the blind man.
Neither can fuckwit CarbUncle Sch-wart-zit read either:
Proof "Uncle Al" cannot read:
"BTW, you *****-faced baboon, "(c+v) appears nowhere in the paper, nor
could it. Hey Androcyst, you are an ineducable idiot. Your high
school should be leveled and replaced by an abandoned bowling
alley." --Schwartz the fucking imbecile.
YOU are the error, you fucking blind arrogant stupid *****. ***** back
to chemistry.
Androcles.
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| User: "Uncle Al" |
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| Title: Re: Two Stars with same mass |
15 Oct 2005 09:52:06 AM |
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Androcles wrote:
[snip]
YOU are the error, you fucking blind arrogant stupid *****. ***** back
to chemistry.
Androcles.
http://www.edu-observatory.org/cranks.html
Google Groups
group:sci.physics author:Androcles
2890 examples of your utter stooopidity - a garbage midden of
ineducable faith-based spew and frank psychosis.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
15 Oct 2005 01:44:54 PM |
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"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:43511796.9C618841@hate.spam.net...
| Androcles wrote:
| [snip]
|
| > YOU are the error, you fucking blind arrogant stupid *****. *****
back
| > to chemistry.
| > Androcles.
If you follow threads from March 1999 when Androcles posted the
orginal bug in relativity you will see an increasingly hysterical and
vicious collusion of bitter little people who deny the process of
scientific inquiry and are utterly rabid about the disclosure being
done. They literally drool foaming spit.
They don't care about the results. They scream, threaten, and attempt
assassination to prevent the disclosure from ever taking place. What
do they fear? They fear their own exposure as the small people they
are.
The critic trolls and idiot vituperators have lost. Androcles
has all his ducks in a row - raw theory, support, calculation, public
disclosure, and no army. Not even the final result remains.
LITLE PEOPLE LIKE UNCLE SNIPCRAP HATE THAT and will
throw any tantrum and invent any lie to prevent the inevitable.
They cannot prevent the inevitable. The disclosure proceeds and the
final knowledge will be had. A null result is the historic Gold
Standard
of performance, but the truth is a Platinum result. The net result is
the
trivially reproducible falsification of Special Relativity in existing
mathematics
all over the world. Professionals call this "science." We don't care
what
god-fearing witch burners and wog haters call it.
Credit for a successful disclosure cannot be stolen by an unsuccessful
rogue
researcher.
It's happening. Let the universe decide.
Androcles
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| User: "Uncle Al" |
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| Title: Re: Two Stars with same mass |
16 Oct 2005 02:00:08 PM |
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Androcles wrote:
[snip crap]
Androcles <=>Jämmerlichkeit
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
16 Oct 2005 04:49:19 PM |
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"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:4352A338.5BB82868@hate.spam.net...
| Androcles wrote:
| [snip crap]
|
| Androcles <=>Jämmerlichkeit
|
|
| --
| Uncle Al
| http://www.mazepath.com/uncleal/
| (Toxic URL! Unsafe for children and most mammals)
| http://www.mazepath.com/uncleal/qz.pdf
Uncle Al <=> Dummkopf
Androcles
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| User: "Orion" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 08:24:34 PM |
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First we have to figure out what mass is (the mechanism).
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| User: "Sam Wormley" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 08:18:58 AM |
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George wrote:
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
Gravity
http://scienceworld.wolfram.com/physics/Gravity.html
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| User: "PD" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 02:57:55 PM |
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George wrote:
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
It won't. At the same distance from the *center* of each star, they
will have the very same gravity. This applies to all distances greater
than the radius of the larger star. As long as you're outside the star,
gravity behaves (neglecting small Einsteinian effects) as though all
the mass is concentrated in the center, and it falls off with distance.
Thus, outside of both stars, with equal mass, they behave the same.
With the smaller, more dense star, the only difference is you can get
closer to the center and still stay outside the star.
For what happens to the gravity inside the star, then you need to do
some math.
PD
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| User: "Mark Martin" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 08:02:46 AM |
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George wrote:
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
It has to do with distance. Newton's law for gravity is
F = GMm/r^2
M & m are two gravitating masses, r is the radius, the distance,
between their respective mass centers. (Don't worry about what G is.
It's not important for your question.) What happens if I change the
value of r? Since the value of r is squared (r^2), if I increase it by
a factor of two, then the strength of gravity drops to 1/4 of its
earlier value. If I decrease r to 1/2, then gravity at that radius
increases by a factor of four.
So if there are two stars of equal mass but of different surface
radii, then their *surfaces* will be at different distances from their
own mass centers. The strength of gravity at their surfaces will
differ. Let's say that star1 has a radius of 1, star2 a radius of 2.
Suppose then that I suspend myself above star1's surface at a distance
equal to that of star2's surface radius. Since they are of equal
masses, I will be subject to gravity at that radius equal to that at
star2's surface.
This is why a black hole can have a finite mass, but have strength
of gravity which approaches infinity as its center is approached, just
as it's also why light can't escape from a black hole at some finite
distance. For a hole's mass, there's a radius at which the escape
velocity exceeds the speed of light.
Keep in mind that digging a hole in star2 all the way down to
star1's surface radius will not result in gravity equal to that at
star1's surface. The difference in such a case is that there will be
less mass beneath your feet than if you stood on star1's surface. Less
mass equals weaker gravitation.
-Mark Martin
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| User: "" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 08:19:37 AM |
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In article <xn0e8hiqrb9xun000@news.europe.nokia.com>, "George" <georgekinley@hotmail.com> writes:
Hi,
If two starts with same mass but different size why will the one with
smaller size will have greater gravity
It won't.
At a distance (measured center to center), both stars will have
identical gravitational effects.
What is true, however, and what you're probably talking about is that
the smaller star will have the greater _surface_ gravity. That's
because it's surface is closer to the center of the star. And gravity
obeys an inverse square law. It gets stronger as you get closer.
John Briggs
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: Two Stars with same mass |
14 Oct 2005 10:09:30 AM |
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<briggs@encompasserve.org> wrote in message
news:NhRu9g$BaJh2@eisner.encompasserve.org...
| In article <xn0e8hiqrb9xun000@news.europe.nokia.com>, "George"
<georgekinley@hotmail.com> writes:
| > Hi,
| > If two starts with same mass but different size why will the one
with
| > smaller size will have greater gravity
|
| It won't.
|
| At a distance (measured center to center), both stars will have
| identical gravitational effects.
What will a start have, though?
Androcles.
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