Re: .Simple SR question...


"Paul B. Andersen" <paul.b.andersen@xxxxxxxxxxxxxxxx> wrote in message news:eqo5mk$1iea$1@xxxxxxxxxxxxxxxxxxxx
Henri Wilson wrote:
On 9 Feb 2007 11:24:41 -0800, "PD" <TheDraperFamily@xxxxxxxxx> wrote:

On Feb 9, 12:59 pm, "Androcles" <Engin...@xxxxxxxxxxxxxxxxxxxxxx>
wrote:
"Randy Poe" <poespam-t...@xxxxxxxxx> wrote in messagenews:1171033981.989320.181250@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Feb 9, 7:49 am, HW@....(Henri Wilson) wrote:
On Thu, 08 Feb 2007 23:12:09 +0100, "Paul B. Andersen"
You will find my name twice in that list. But in both cases
it was YOU who used the phrase. My name appear only because
I quoted you.
Well I'm sure you know what is meant by 'Flat Gravity'.
I didn't invent the expression.
Then shouldn't there exist an example of somebody else using it?
- Randy
There is.
Flat gravity is used where the rubber *** with a ball resting on it
bends to describe gravity.
http://www.wwu.edu/depts/skywise/img/blackhole_44.gif
http://www.astro.umd.edu/~miller/poster1.html
"Flat gravity" is used nowhere in the links provided.
One liar supporting another liar.

PD

The following should be noted:
1) It's an accredited source:
"Department of Astronomy and Astrophysics, University of Chicago"
2) "Studying neutron stars and black holes [that have never been found]
gives us access to exotic realms that we can't explore on Earth
3) "a lump of neutron star matter the size of a sugar cube would weigh as much as all humanity", so the weight of all humanity is the new NIST standard mass.
4) "we have to observe neutron stars with telescopes" [if we ever find one].
5) "a new X-ray satellite discovered a remarkable new phenomenon of neutron stars that strip matter from their companion stars" [without a telescope]
6) "how it may even help us search for black holes" [that someone invented]
7) "the Cheshire Cat disappeared and left only its smile behind"
8) "Black holes are usually formed when an extremely massive star dies in a supernova" [if we ever find one]
9) "If you approach a black hole feet first, the gravitational force at your feet is greater than the force at your head"

Strange Facts About Black Holes
Light bends so much near black holes that if you were near one and looking away from the hole, you would see multiple images of every star in the universe, and could actually see the back of your own head! [or the Cheshire cat's smile]

Inside a black hole the roles of time and radius reverse: just as now you can't avoid going into the future, inside a black hole you can't avoid going in to the central singularity.

If you stood a safe distance from a black hole and saw a friend fall in, he would appear to slow down and almost stop just outside the event horizon. His image would dim very rapidly. Unfortunately for him, from his point of view he would cross the event horizon just fine, and would meet his doom at the singularity.

Black holes are the simplest objects in the universe. You can describe one completely by just its mass, spin rate, and electric charge. In contrast, to completely describe a dust mote you're have to specify the position and state of all of its atoms, taking at least $10^{16}$ numbers!

As Hawking discovered, black holes can evaporate, but only very slowly. Even one the mass of a mountain will last for ten billion years, and one the mass of the Sun will only evaporate after $10^{67}$ years.

This dude sits in a wheelchair to make his "discoveries".
I discovered bright green flying elephants without the fuckin' wheelchair.

How Do We Detect Black Holes?
Black holes don't radiate light, and an object that falls inside a black hole doesn't emit light either, so detecting them can be challenging. [we observe them through telescopes]
There are plenty of black holes to find, all of them between the ears.

'Flat Gravity' is a commonly used term describing an
iso-gravitational-potential surface.

Any real scientist knows what it means.

You are babbling, Henri.
Originally you used the phrase "flat gravity" when you meant
"flat space time".

What's "flat space time", then?
You are babbling, tusseladd. Perhaps you caught it from Roberts,
babbling is contagious. This is highly virulent babble:

"| SR is strictly valid only in a flat Lorentzian manifold with the
| topology of R^4. This of course is a very poor model of the world we
| inhabit.
|
| But physics is not math, and we often use approximations. SR is
| approximately valid when the curvature of the manifold is negligible
| over the region of interest compared to one's measurement accuracy. That
| is, if gravity is negligible (or compensated for), SR can probably be
| used. " -- Humpty Roberts, chief babbler.






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