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JEROME - Black holes do not exist

JEROME DA GNOME said:
Yes, yes, but how do we know what force we are measuring?

How does the force of gravity derive it's power?
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That question doesn't make sense. What do you mean by "power" in this context? Obviously not what a physicist would mean (Power (physics)WP).
 
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JEROME DA GNOME said:
Yes, yes, but how do we know what force we are measuring?

How does the force of gravity derive it's power?
Click to expand...
We know that it is gravity bcause gravity is the force between 2 masses and we are measuring the force between 2 masses.
Gravity does not "derive it's power". It is not the power from an engine. It is the force between 2 masses.
 
JEROME DA GNOME said:
The same way two bodies of mass do.
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Really?

So you accept EM, but not gravity, despite stipulating that the forces work in the same way.

However, since EM can be either attractive or repulsive, and gravity can only be attractive, how can it be that they derive their "power" in the same way?
 
Why does it matter what causes two bodies to be attracted?

Is not the fact that they are attracted proof of gravity?
 
Jerome, your question seems to amount to 'how does gravity work?', or perhaps more like 'why does gravity come about?'

As far as I know the answer, as is so common, is 'we don't know'

This in no way means that gravity isn't real, supported by overwhelming evidence, and fully measurable, observable and malleable. We just don't know where it comes from.

Now this is hardly ideal, but the fact that we can't fully explain gravity in no way diminishes the reality of it. Life would be unbearable if we knew everything....
 
JEROME DA GNOME said:
Curious as to why such simple questions about something so established are not being answered.
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Because there's no point in answering trolls. You don't care about the anwer - you just want attention.

For any non-trolls reading this, the best answer (for what the physical mechanism of gravity is) was provided by a guy named Albert Einstein in 1915. As in standard Newtonian mechanics, unless acted on by an external force objects move along straight lines at constant velocity. But Einstein noticed that if you allow space (and time, actually) to be warped, "straight lines" look curved to an observer (in much the same way the path an airplane takes across the Atlantic looks curved on a map, when in fact it's following the shortest path).

So he wrote a set of equations which describe how space warps in response to mass and energy, and demonstrated that, when the warping isn't too strong, they reproduce the old Newtonian results for gravity. When gravity gets strong, however, his theory differs from Newton, and those deviations have been measured in many contexts, providing strong support for his theory.
 
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