Natural Science Forum / Physics / Relativity / November 2005

Any secondary school geometry student should be able to
claim the prize on pargraph A1 alone.  You should have
hundreds from this news group. You should apply for a
job at the White House. They seem to favor the kind of
arrogance one shows in self annoi... ahhh appointment
as judge, jury and hangman.

Sue...

*snort*

It does. In fact, both orbit the common center of mass of the pair. Do
you know where that center is?

Are you not aware that extrasolar planets have been deduced *precisely*
because of the orbit of the star around the common center of mass
shared by the planet?

Sure it is. This is a false, erroneous statement. You are simply
unaware of how to satisfy those concurrent demands.

Imprecise claptrap with no predictive power whatsoever. Can you
*predict* the "erroneous movements" arising from the "contradictory
demands" that are "impossible to fully meet"? If you have a theory that
explains something, then it should be able to predict that occurence at
least as well as the preceding theory does.

And so, when I'm on the beach immediately between high and low tide,
I've got no force of gravity acting on me at all?

Incredible.
I have a bank account that is in the black, but no money.
I ate my dinner, but had no food.
I can see, but there is no light.
You are not nuts, but you are CRAZY.

Gravity.
Why gravity? Because gravity is a force.

Consider

It DOES.
http://en.wikipedia.org/wiki/Barycentre
Considered.

NONSENSE.
http://www.ifmo.ru/butikov/Projects/Collection1.html

Consider that you are full of sh.t.
Androcles.

True, but who needs proof of the obvious?

 All you have to do is answer

Yep, I'm always a bit skeptical when somebody says they'll pay to be
shown that "1+1=3" is wrong.  I suspect a little too much space has
fallen on Happy Henry's head.

Hallo Mr Haapalainen

four dimensions are a thing very easy to understand (but very hard to
imagine, because our brain works three dimensional). What Einstein wrote is
all about this thing, but he used a lot of mathematics and it gets hard to
read his book. He used a four dimensional space that is named
'Minkowski-space'. It has four dimensions of the type lenght. Everything is
moving in this space, since time is passing on. Everything is moving there
with lightspeed (in this modell). The pass of an unmoved objekt  in this
space is the eventpass (my word for this phanomen). (its easier to
understand , when you use only two dimensions. A pass in this 'space' is
something like a graph on an oscilloscope. )

An observer in this space like (for example me ) defines time as he uses a
clock. He cannot decide if he is moving or not (there is no fixpoint), so he
declares himself for not moving. By doing this he defines direction and
units of time. This is because of the speed of light stays allways constant
and there is the law of  preservation of energie, which means that energie
(and anything else) has to move through space-time. He takes one of the four
dimensions as time and the three other as space. Which one is relative to
his own movement. So he creates his own reallity, but cannot compare with
other reallities.

The minkowski-space is the room of all possible events. It is expanding by
definition. The problem is how to proove, that our space is a minkowski
space. The best reason, to think so, is the existence of gravitation.
Gravitation can be explained as movement on the event pass.  Einstein
stated, that the eventpasses can bend. He did this because gravity is a
reality and he used this modell to explain this phaenomenon. and as far as
we know, it worked very well.

best regards

thomas heger