What is Gravity?

I will call your explanation as "absolut gravity', but then what is the explanation for 'relative gravity' i.e. if there is one big & one small mass on the earth, they both apply gravitational forces on each other.

You seem to have answered your own question. The normal equations for gravity hold for any number of objects.

Zzzzzzzzzzzzz... Blu... Ah? What was that?

I was just going to ask you what you thought of the stuff in #85. Personally, I think he can stuff it.

Thought for food?

Great illustration!

Don't you think it is similar to surface tension phenomenon.

If you put an object weighing just enough for surafce tension of water to support, it will creat the same pull in water surface from around.

Also, does this mean that higher the mass greater the time inertia? Well, then time is faster on moon than earth. So, I'll get more aged on moon than on earth, as aging is related to time or is it not?

It's actually the other way around.

Yes, it does look something like surface-tension. It also looks like those demonstrations that put heavy objects on a large sheet of Spandex.

And, yes! Just like a bank vault door has more inertia than the front door of your house (assuming you don't live in a bank vault), kicking your front is a lot easier on the foot than kicking a bank vault!

Also, as you pointed out, the larger the mass, the more the inertia in time, and the slower you age! This is addressed in Einstein's General Theory of Relativity. Time moves slower in higher gravitational fields. This has already been proven.

Gravity is an amoeba?

I'm really surprised that no one else has anything to say about my diagram! But that's physics for you!!!

It appears to say gravity might be a property (or anti-property?) of space not in the universe?

Your diagram... What happens if two objects are on the same direct line from the center?

They collide and squish each other!

Actually, the diagram is quite limited - I would have to make it 3-D to be truly representative of the Universe. Besides, I don't necessarily believe this is a true representation, it was just a passing thought.

OK, it's a cosmic camshaft. You turn it, and the black hole goes flying away.

Nice one Vermin

Thank you! I give you one good vote for that!!!

Oh, and so I guess that this means a black hole at the center of a galaxy, containing 10 million solar masses is a real low energy spot.

Yes! The total energy per single unit of mass is low.

It is the huge amount of mass at that low potential that creates such strong gravitational force.

Remember, each particle that is added to the mass also adds its energy to total mass. At some point this total energy will reach a critical limit. At that point any energy added will result in an equal amount of energy ejected at the poles.

Since mass and energy are essentially the same thing and are being converted back and forth on the grand cosmic scale, I think it's time for you to go back to the drawing board!

Yes, even the most energetic photons can give rise to mass given the appropriate conditions. Also, the jets of X-Rays that shoot out from black holes are high energy particles that are captured by the black hole's twisted magnetic fields. So they were in the correct place not to suffer the fate of being sucked in.

On top of all that, astronomers have observed stars in stable orbits going round the black hole in our own galaxy at about 2 to 3 percent the speed of light. Also, a new form of stellar creation was discovered, which is based on massive amounts of dust and gas being whipped into each other and rapidly forming stars in the region of the shock wave.

Seems like a very energetic place to me!

I agree the total energy is high in a black hole, but only because the total mass and density is extreme. Gravity is directly proportional to mass.

When I say low energy, I reference it to pure energy - radiation, light, etc.

Yes- thank you for your explanation. Unfortunately, if true grvity would be increasing all the time- entropy certainly is-if grvty was increasing as energy slowed down to mass, the supposed expansion of th e pooliverse would be slowing- it ain't!. I guess you could say that as proportions involved are so massive, it will take billions of further years!.?. Is it the fact? that gravity on Earth is increasing that makes my physical movements weaker- or that my energy is declining thru entropy- or the amount of hb I have consumed, in a detrimental additive effect?. Or the fact that we know that 3 score & 10 years is the average lifespan!. Why don't you use your considerable intellect to answer if there is anything further life beyond this vale of tears!.

Gulp! What in the Hell was the topic? Any topic?

The measured gravity and the mass of the earth is increasing all the time.

Entropy is not increasing, but the Total entropy is.

"supposed expansion of th e pooliverse would be slowing- it ain't!." Now how can make such a grandiose unsupported statement? getting emotional?

Your energy is declining due to easy chair-itis The HB is only adding to your veil of tears, Try Alexander Keiths or Guinness

The average lifespan went from about 900 years 6,000 years ago to about 26 years in the dark ages. It then gradually increased due to the advances in medicine over the last century. The average of 70+ years only applies to non-smokers!

Do you really want to know " if there is anything further life beyond this vale of tears!."? and if I told you would you believe me?

well.... here goes....the answer is...Yes!

Best be prepared!.Prepared=win, Not prepared =Lose.. On the unlikely and infestimally small chance I am wrong, nothing is lost, by being prepared, except your veil of tears.

Bingo!!!

Does it follow, then, that there is no dark mass, just energy?

No,

Dark Matter is Matter that emits little or no detectable radiation. It could be simply a high gravitational mass close or equal to the mass of a black hole.

Have you read today's article about they think they've discovered about half the dark matter? Using the Hubble Space telescope, they (the astrophysicists) say they've discovered webs of hydrogen, helium, and oxygen atoms extending out toward the farthest reaches of the visible Universe.

Still remains to be digested by other astro-phys... They also lost the giant void in the map of the Universe. They think it may have been nothing more than a statistical artifact.

"They also lost the giant void in the map of the Universe. They think it may have been nothing more than a statistical artifact."

You mean a srew-up?

If they know that the matter they discovered is half the total mass, then they know how much total it is. Means they have discovered complete matter.

The scientist also unnecessarily claim what is not really known!

Pretty much, yeah.

Techno,

That was bloody brilliant, sir!

Kudos,my friend, kudos.

Ari (orpheuse)

Gravity is to blame for people "falling" in love.

I think techno and I are on the same wavelength, but I'm not into string theory

Your questions are not difficult to answer.

Gravity is the long-range attractive force that exists between all matter.

The attractive force called gravity is a characteristic of and derives from matter.

It is attractive, rather than repulsive, because that is the definition of the word. (If a similar but repulsive force were discovered it would be given its own word.)

As with all natural phenomena, gravity has no purpose, but rather it just is.

Magnetism is one aspect of electro-magnetism. Gravity is not related to it. Gravity is derived from all matter, both magnetic and non (see above.)

(This is the easy approach... I like it. I tried to find a picture of gravity, but it was too elusive.)

In truth, "gravity" is defined only as pertaining to a sense of weightiness...as in heaviness, seriousness, finality, terminality, deadliness, ...gravitas. It's connection with attraction comes only as a result of physical law (Newton) meant to explain theoretically why objects "fall" (go downward in the Earth-bound sense), whether towards the ground on Earth or (as was Newton's insight) towards each other (as in orbiting bodies). While Newton and those who came after, having accepted the coined word, gravity, to describe (not a physical property but) an observed phenomenon, were able to establish laws by which to predict (to approximate very closely and very provably) the phenomenon (gravity), none yet have been able to explain (much less give evidence or proof of) the underlying cause (the physical property, if you will) of gravity....whether it is (or would be) a property of matter, of the intervening "space," or that it even exists!

So you see, ascribing a definition (a conventional word usage) is merely a man-made contrivance but does not, in the case of gravity, explain what it is...any more than the phenomenon of greenness can be explained by saying we define "green" to mean the color of anything that we observe to be green. To do so would constitute the logical fallacy commonly known as "begging the question."

Therefore, neither the validity of the original question ("What is gravity?"), nor that of the less outlandish suggestions, can be refuted or set aside by simply stating a word long agreed upon to describe a phenomenon (insofar as it can be described).

So, indeed, the question (itself) does remain difficult to answer...even difficult to understand.

"none yet have been able to explain (much less give evidence or proof of) ... gravity.... or that it even exists!"

Oh then, if it doesn't exist, what keeps you from flying off the earth?

Yeah!!! Let's go to my new thread and beat people up!!!

I think you missed the point of the statement. It was a statement in principle; it wasn't about what keeps me from flying...

Squish the bug!!! Squish the bug!!!

So you were the GUEST of post 110! Cat (sorry not the Del the cat) is out of hat!

It took me awhile to find it, but no. That's not me. I post only as myself, and have the bumps to prove it! Even if I'm being outragiously sarcastic, I never hide my identity!

Besides, you can't vote for yourself. Try it!

Vermin, my friend, you misunderstood. See my post 124 again. It was in reply to post 122 of CowAnon, and not to post your post 123!

Do'h!!! Sorry about that!

Gravity is glue.

Named as a clue.

Some places don't have it,

And some do.

You have to be there to see it or feel it,

You get weaker without it.

Stonger because you have to fight it.

The bigger you get, the more you have.

The place where it isn't,

Is a vacation from the world.

Big and small,

Gravity is glue held off by a comma.

You guys are clueless.. not all of you, just the clueless ones.. about 90%

And probably you are glueless

I have plenty of glue.

I just don't think you can conceptualize at the atomic level.

GUEST? come on..