Raumkrümmung

[Aqua82]

Hallo,

ich habe bei Youtube ein Video von Herrn Lesch gesehen bei dem es um die Raumkrümmung, verursacht von der Sonne, geht. In dem Video meint Herr Lesch die Raumkrümmung durch die Sonne beträgt relativ zum flachen Raum (Krümmung = 0) 1 Millionstel.

Aber 1 Millionstel von was? Gibt es eine maximale Krümmung? Und wie beschreibt man eine Raumkrümmung, bzw. welche Einheit hat sie?

Danke schonmal für die Antworten

[Jens Blume]

[JANm]

[Solkar]

[JANm]

[Solkar]

Ach so

Das geht gar nicht mit Kelvin!!!

Ja Potzblitz - geht das denn vielleicht mit Lego oder so?
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Nein! Das ist bestimmt irgendwas mit Quanten!
Man muss das nämlich alles erstmal quantenmechanisch beurteilen, mit allem Drum und Dran...

[JANm]

Hello Solkar

Found my lecture on degenerate neutronstars. Temperature is large
the maximum temperature of a non degenerate neutronstar has a maximum of 9*10^9 Kelvin, vast 10 million Kelvin. On my graph the maximum for a degenerate neutronstar is 12 million Kelvin.

Typical temperature for a type I pre-supernova is 2 million Kelvin and a type II pre-supernova 4 million Kelvin.

Supernovae are of great importance to:

Measuring (calculating) distance to a galaxy in which it happens. Velocitie of the shell can be measured with the so called doppler (1p or 2?) shift.
So at the moment the shell becomes a disk the absolute size is known bij integrating the velocitie of the expanding shell. It is pleasant to emphasize that a star will go in nova-stadium, because the expanding is then known from the beginning.

The second importance is evolutionary. The nova brings heavy elements in its surroundings and hydrogen clouds which go in contraction with still more of these heavy elements when a star-forming nebula is aging.

The evolutiontracks of stars containing heavy elements differ slightly from a pure hydrogen-contraction model.

The schwartschild radius of 3km for an object of one solarmass needs to be corrected to 2.95

Greetings Janm

If you want to continue your question of Lego, please start a new topic.
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Weiss nicht viel aber was ich weiss benutze ich.

[Solkar]

[JANm]

Hello Solkar

There is (was?) a mathematician who thought of the bottle of Klein. It is Topologie; It is a generalization of the Mobius - Belt. If you twist a belt one time and then connect it you have the Mobius Belt (correct name?) These ones you can also buy with label Calvin Klein. The Bottle of Klein can be thought of a s a tube Whith an inner tube after 90 degrees the inner tube alters in the left half circle then in the next 90 degrees it becomes the outer tube.
So you have to turn 720 degrees to come back to the startpoint.

Problem is that always is said that the bottle of Klein is impossible in three dimensions; so that probably will remain for so a long time. That happens all the time...

PS It is nice to read the old patents of Lego, a six-sided brickstone for instance.

greetings Janm
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Weiss nicht viel aber was ich weiss benutze ich.

[Solkar]

Don't you try to sidetrack this!
Issue at hand is much too serious...

I repeat my question
Why do I to have to wear a jacket of certain label when I perform these experiments?

And, furthermore

[Solkar]

[JANm]

[Solkar]

Don't you try to sidetrack this, you wont get out this mess that easily!

Why do I to have to wear a jacket of a certain label when I perform these experiments?
What's in that 'klein bottle'?
And why just a 'klein' bottle, who gets the grosse Flasche?

It's that mysterious 'Kelvin' guy again, isn't it?

[JANm]

Hello Solkar

Topologie:

The simplest closed surface is a ball.
Topologically a ball is the same as any object without a hole. So for instance a cube.

So a cup with one ear is the same as a ring. We as people have the topologie of a ring which starts from our mouth and end at our behind.

A pretsel is a complicated cookie with four holes.

Another Mathematical subject is knowledge of algebraic geometrie. There one is interested in laying knots. You can understand that objects with holes can be passed through with knots. The beginning and end of a bycicle chain can be connected as a ring with a keylock. Then itself becomes a ring. If this ring does not pas a fenche and your bycicle you will problbly loose it...

Ok a mobius ring is a strange one; bij walking on the surface there is no inside or outside after 360 degrees around you come on the inside and again after 360 you become on the outside again.

A bottle of Klein is a generalisation of ths surface problem.

It is a bottle with a tube connected to the mouthpiece.
In the side of the bottle is made a hole (the toplological misschief) the tube comes in the bottle is braodenend and then connected to the botom of the bottle.

It seems to be a bottle that cannot contain water because the inside is the outside.

The most interesting combination of topology and algebraic geomitry are acts of inteligent stand up comedians who can pull out a shirt from under a jacket without putting of their jacket...

greetings Janm
_________________
Weiss nicht viel aber was ich weiss benutze ich.

[Solkar]