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Gravity collapse SJC.

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SJCrothers,

 

Just an inquiry.

 

 

II Critical phenomena in gravitational collapse

 

Starting with spherical spacetimes,

 

 

 

where dW º dq2 + sin2qdj2, and {xm} = {t, r, q, j} are the usual spherical coordinates, Choptuik [5] investigated the gravitational collapse of a massless scalar field, f, which satisfies the Einstein-scalar field equations,

 

Why is the field expressed as a Scaler quantity and not a Vector quantity (having magnitude and direction ) ?

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I think he ran off to troll other forums.

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Why is the field expressed as a Scaler quantity and not a Vector quantity (having magnitude and direction ) ?

 

Can you ask it in plainer English?

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This is Sheffield Forum not Stephen Hawking's drop box. :)

 

Are you suggesting that our members are incapable of advanced mathematics?

 

It may not matter if they are, if the OP is prepared to put in some work. There is no better way of properly understanding something than explaining it to another.

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Quote:

II Critical phenomena in gravitational collapse

 

Starting with spherical spacetimes,

 

where dW º dq2 + sin2qdj2, and {xm} = {t, r, q, j} are the usual spherical coordinates, Choptuik [5] investigated the gravitational collapse of a massless scalar field, f, which satisfies the Einstein-scalar field equations,

 

Er sorry cannot help you there but if you write into the Big Bang Theory

possible Sheldon may have the answer, Sarcasm loading.

and I’m sure with Einstein’s Theory of relativity you will manage a rhetorical

Sarcastic quiptic retort.

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Hairyloon,

 

I think what is in the question is as simple as it gets. Scalers are quantities which only have magnitude ,eg: volume. Vectors are quantities that have magnitude and direction, eg : force.

I'm puzzled how a scaler gets into the equation.

Edited by petemcewan

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gravity, black holes

 

...the planets are indeed a mysterious force to be reckoned with so better stay indoors if there is a full moon next to Uranus

Edited by cressida
sorry wrong thread

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Are you suggesting that our members are incapable of advanced mathematics?

 

It may not matter if they are, if the OP is prepared to put in some work. There is no better way of properly understanding something than explaining it to another.

 

Considering the amount of self confessed experts on here when I asked what I thought was a reletively straight forward question (for experts) on here, no two answers were the same.

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gravity, black holes

 

...the planets are indeed a mysterious force to be reckoned with so better stay indoors if there is a full moon next to Uranus

 

what if Uranus is so big it generates its own gravity ?

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There would have to be an internal investigation...obviously

 

.. the astrological alignments are a little challenging at the moment but wait for even more fireworks next year with Uranus doing his edge of chaos orbits.

Edited by cressida

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Considering the amount of self confessed experts on here when I asked what I thought was a reletively straight forward question (for experts) on here, no two answers were the same.

 

That is probably the quantum effect...

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