Gravity

[mh47g]

My life has been turned around. I always thought that gravity came from something spinning, like the earth for example.

I found out today that this is not the case, and I am 23. How did I get through high school?

 

[JohnCU]

there are many theories that attempt to explain gravity.

 

[her209]

Epic fail.

 

[dighn]

you must have had really bad teachers
perhaps you confused it with magnetic field? the earth's magnetic field comes from its spinning core, as we know from the movie "The Core"

 

[DaveSimmons]

It's really made from cucumbers.

or . . .

"Magnets" -- Jack O'Neill


But seriously, rotation of spacecraft and space stations is a popular (and valid) method of generating artificial gravity in SF.

 

[torpid]

Well, to be fair, you can simulate gravity by having people stand inside of a sphere or cylinder that is spinning.

 

[Agentbolt]

Gravity is a series of tubes.

 

[hanoverphist]

Originally posted by: dighn
you must have had really bad teachers
perhaps you confused it with magnetic field? the earth's magnetic field comes from its spinning core, as we know from the movie "The Core"

i thought the earth was hollow, with dinosaurs and strange native people in furs living there? and dont forget the giant bat people! those are there too!

 

[Bill Brasky]

Originally posted by: Agentbolt
Gravity is a series of tubes.

If you're referring to dark matter then you might not be far off.

 

[NikolaeVarius]

Originally posted by: mh47g
My life has been turned around. I always thought that gravity came from something spinning, like the earth for example.

I found out today that this is not the case, and I am 23. How did I get through high school?

Well, that would be centripetal force, but you got it the other way around. It would cause us to fly off the earth.

Gravity comes from Mass, and what is theorized as, Gravitons that are somehow emitted from somewhere. (Magic)

 

[Squisher]

gravity + gyroscopes = Squisher's head assplodes

 

[gururu2]

black holes do not spin afaik and they emit immense gravitational fields. i bet that is something you knew!

 

[Pocatello]

Real gravy is better than fancy sauces.
Failed at reading. Gravity, now that's a deep thought subject.

 

[JohnOfSheffield]

This gravity business is a hoax, look for the truth in God, the theory of intelligent falling is as good as intelligent design, which is obviously true too.

Evidence? God works in mysterious ways.

 

[ForumMaster]

Originally posted by: torpid
Well, to be fair, you can simulate gravity by having people stand inside of a sphere or cylinder that is spinning.

true, but then the simulated gravity is the centrifugal force. every object has a gravity field. take for example, an astronaut. if there was no stronger field of gravity in his vicinity, his tools would be attracted to him due to his field of gravity.

 

[Epic Fail]

Originally posted by: her209
Epic fail.

I concur.

 

[The Boston Dangler]

Originally posted by: gururu2
black holes do not spin afaik and they emit immense gravitational fields. i bet that is something you knew!

black holes spin incredibly fast. they also emit muon lasers (maser) at at least one pole. afaik, the energy and mass of the maser does not come close to the energy and mass being eaten by the black hole.

 

[Analog]

Originally posted by: The Boston Dangler

Originally posted by: gururu2
black holes do not spin afaik and they emit immense gravitational fields. i bet that is something you knew!

black holes spin incredibly fast. they also emit muon lasers (maser) at at least one pole. afaik, the energy and mass of the maser does not come close to the energy and mass being eaten by the black hole.

A Maser is a Microwave Laser, and they don't emanate from inside the black hole, as even light cannot escape its gravity, but from the disc of superheated gas that is falling into the black hole.
See below:


Supermassive black holes that are millions and billions of times more massive than the Sun are believed to lie in the centers of even ordinary galaxies. In the vicinity of the black holes, infalling gas is compressed and heated forming rotating discs. The importance of these disks lies in what their shape and rotational velocity reveal about the gravity and thus the mass of the invisible black holes. Unfortunately, the disks are difficult to study because they are extremely small in angular size and enshrouded by stars, gas, and dust.

However, a small fraction of these disks contain water vapor that generates intense laser-like beams of microwave emission (i.e. maser emission) that can be detected when the disks are viewed nearly edge-on. This maser emission can be detected with instru ments such as the VLBA, thereby providing unique images of these important astronomical objects and appreciably improving our understanding of the immediate vicinity of supermassive black holes. In three archetypal maser galaxies, NGC 4258, NGC 1068, and the Circinus galaxy, the black holes are surrounded by thin, well defined, and well behaved accretion disks. Matter slowly spirals towards the center while orbiting in organized fashion the central black hole.

 

[Random Variable]

Originally posted by: ForumMaster

Originally posted by: torpid
Well, to be fair, you can simulate gravity by having people stand inside of a sphere or cylinder that is spinning.

true, but then the simulated gravity is the centrifugal force. every object has a gravity field. take for example, an astronaut. if there was no stronger field of gravity in his vicinity, his tools would be attracted to him due to his field of gravity.

Every object with mass is attracted to every other object with mass.

 

[legoman666]

Originally posted by: Random Variable

Originally posted by: ForumMaster

Originally posted by: torpid
Well, to be fair, you can simulate gravity by having people stand inside of a sphere or cylinder that is spinning.

true, but then the simulated gravity is the centrifugal force. every object has a gravity field. take for example, an astronaut. if there was no stronger field of gravity in his vicinity, his tools would be attracted to him due to his field of gravity.

Every object with mass is attracted to every other object with mass.

I'm trying to think of an elegant way to say that's why your mom is attracted to my penis without sounding crude but I came up blank.

 

[Uppsala9496]

Saw this and thought it was going to be a F@H thread.....then I noticed I am in ATOT.
nevermind

 

[BradAtWork]

Originally posted by: mh47g
My life has been turned around. I always thought that gravity came from something spinning, like the earth for example.

I found out today that this is not the case, and I am 23. How did I get through high school?

Let me guess, you're American?

 

[legoman666]

Originally posted by: Uppsala9496
Saw this and thought it was going to be a F@H thread.....then I noticed I am in ATOT.
nevermind

my first thought also.

 

[Eeezee]

Originally posted by: gururu2
black holes do not spin afaik and they emit immense gravitational fields. i bet that is something you knew!

Black holes can spin, there is observational evidence suggesting that there are some spinning black holes (with smaller event horizons)

 

[Foxery]

Black holes are the remanents of dead stars, and all stars spin. It would be very strange to find one that had stopped...

Originally posted by: tenshodo13
Gravity comes from Mass, and what is theorized as, Gravitons that are somehow emitted from somewhere. (Magic)

Bleh to "particle" theories like gravitons. I know there's math behind it, but emitting an attrative force sure seems like an oxymoron.

Warping spacetime sounds like much more fun.