[quote="NuclearSilo"]Ok bend space. For example this: How does that make 2 objects pull each other?
well...if an object is to breach the territory that is bent, it would be forced to slide towards it right? what can go down goes down. (in this case it's the ball itself being pulled inside). if the ball would have enough speed it would also be possible to pass straight through the bent space and continue. In spaceflight they use this to create a swinging motion around a big planet so that we can launch our rockets to go even faster without using a lot of fuel.
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Day[9] wrote:
"Tea is a lot like gold expansions - it helps you kill people." - Day[9] Daily 337 -
Joined: Aug 2006 Posts: 8834 Location: Age of Wushu
poehalcho wrote:
NuclearSilo wrote:
Ok bend space. For example this: How does that make 2 objects pull each other?
well...if an object is to breach the territory that is bent, it would be forced to slide towards it right? what can go down goes down. (in this case it's the ball itself being pulled inside). if the ball would have enough speed it would also be possible to pass straight through the bent space and continue. In spaceflight they use this to create a swinging motion around a big planet so that we can launch our rockets to go even faster without using a lot of fuel.
Normally, on Earth it works like that, you sit on a couch and any balls around on the couch will be drawn to you. It happens because there is a 3rd party force involved, the gravity of the Earth and a force by the surface, not because the couch is bend nor the human body attract it. In space, it's not the same, what is the other 2 forces?
Ok bend space. For example this: How does that make 2 objects pull each other?
well...if an object is to breach the territory that is bent, it would be forced to slide towards it right? what can go down goes down. (in this case it's the ball itself being pulled inside). if the ball would have enough speed it would also be possible to pass straight through the bent space and continue. In spaceflight they use this to create a swinging motion around a big planet so that we can launch our rockets to go even faster without using a lot of fuel.
Normally, on Earth it works like that, you sit on a couch and any balls around on the couch will be drawn to you. It happens because there is a 3rd party force involved, the gravity of the Earth and a force by the surface, not because the couch is bend nor the human body attract it. In space, it's not the same, what is the other 2 forces?
watch the video posted above. You shouldn't take the ball on a couch thing too literal. technically both you and the ball are both drawn towards each other, however on human size the power of gravity is so incredibly tiny it doesn't even matter. it's all about the mass of an object. you can have a tiny object, but as long as it has a great mass it'll have great gravity as well. unfortunately the only small things known to us with truly great mass are black holes. their gravity is powerful even light can't escape from them. that's why black holes are the most pure black that there is. anyway, to put it simple: you and the ball do pull each other, but sizes are so small it doesn't matter at all. planets are really big...they are also heavy, planets pull each other, planets pull us. that's why we don't fall off earth, and why the moon is still circling us and why we are still circling the sun.
for further information you should probably dwell into escape velocity.
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Day[9] wrote:
"Tea is a lot like gold expansions - it helps you kill people." - Day[9] Daily 337 -
The terms gravity and gravitation are often used to explain the same thing, but there is a definite difference between the two.
Gravitation is the attractive force existing between any two objects that have mass. The force of gravitation pulls objects together.
Gravity is the gravitational force that occurs between the earth and other bodies. Gravity is the force acting to pull objects toward the earth.
Gravitation is actually a very weak force. The pull is too weak to be felt between two people and it is not even strong enough to pull together two lumps of lead placed right next to each other. It is only when one of the masses is the size of a planet that we can feel the force of gravity.
Joined: Aug 2006 Posts: 8834 Location: Age of Wushu
In the video they can easily explain it because they considered the space as a flat 2D surface. How can they sure that by considering one dimension less, they wouldn't modify anything important? And why no one till now has made a fully 3D explanation? Beside, in any video, people only show the gravity of one object. They forgot to show the gravity of other object and they forgot that gravity could add up and bend the space into a complete abnormal shape
In the video they can easily explain it because they considered the space as a flat 2D surface. How can they sure that by considering one dimension less, they wouldn't modify anything important? And why no one till now has made a fully 3D explanation? Beside, in any video, people only show the gravity of one object. They forgot to show the gravity of other object and they forgot that gravity could add up and bend the space into a complete abnormal shape
It's a documentary. it's meant to clear things up for the average person. naturally they've dumbed it down a little so that everyone can understand. this is the closest possible (current) truth that can be explained to anyone. if you want to know all the details you should ask your physics teacher, not a forum.
either way, no1 can be completely sure of this stuff for now because it's in a currently 'hard to reach' part of the universe.
_________________
Day[9] wrote:
"Tea is a lot like gold expansions - it helps you kill people." - Day[9] Daily 337 -
In the video they can easily explain it because they considered the space as a flat 2D surface. How can they sure that by considering one dimension less, they wouldn't modify anything important? And why no one till now has made a fully 3D explanation? Beside, in any video, people only show the gravity of one object. They forgot to show the gravity of other object and they forgot that gravity could add up and bend the space into a complete abnormal shape
You're not even reading my replies huh? Because space has more than 3 dimensions and it would be EXTREMELY hard to model and visualize if they represented it in all the dimensions...they probably can't. Like I said in another reply, these models DO leave out or modify certain factors to help you understand, they are not perfect.
You'll have to master mathematics and general relativity to fully understand.
From the site jaapi linked:
BS Central wrote:
Q: But don't we know all about the gravity of Black Holes and how even light can't escape?
A: No. This often-repeated error is based on a clear oversight. Black Holes are said to form when a star expends its nuclear energy and physically collapses. But starlight only shines from intact, functioning stars, of course. There is no more reason to expect light to shine from Black Holes than from a burnt-out, smashed light bulb. This is a commonly repeated error in plain view that is intended to showcase and dramatize our scientists' deep understanding of Black Holes and gravity, but which actually exposes how little is truly understood about either.
Stopped reading after that. :facepalm:
Ok, read a little more...that site is borderline retarded.
i think it is because one of the 4 elemental forces between atoms and atom-particels is based on mass...
the reason why it reaches so far is because the masses create fields, like a magnetic field created by electricity. the field is just very big.
And what's the nature of a field? some kind of matter that float around?
a field does not exist of a specific matter, it's a word to define the force around objects/items/atoms/...
it stands for the force that it "sends out". now you're question is probably, "what does it send out?" (although that's the same question as above)... nothing, lol.
(actually, the general relativitytheory says that it sends out transversal waves)
In your model, you talk about the dimension of time. Why time has anything to do with the gravity? Time is not a thing, it's just a concept
As far as I know, it's either force creates force, or force modifies shape, never heard about shape could generate/create a force from nowhere.
Because time and space are intertwined. Hence, spacetime. A clock on top of Mount. St. Helens ticks slower than a clock at sea level. A person traveling at the light of speed would age more slowly, they would be younger than a person stationary on the Earth. It's all relative. Relativity.
Spacetime, gravity, forces, it's all extremely abstract. Space itself (widely accepted) is comprised of 11 dimensions.. so um..trying to explain things with a 2D or 3D model is..well..lacking.
QM shows that matter can be created from 'nowhere', even in the vacuum of space shit is popping into and out of existence.
The three other forces (strong/weak nuclear and electromagnetic) are made of 'parts', unlike gravity (we haven't figured it out yet). Gluons for strong nuclear force. Vector bosons, W and Z bosons for weak nuclear force. Photons for the electromagnetic force. Those are the 'carrier' subatomic particles for the 3 forces other than gravity. For gravity...we dunno lol.
It's theorized the Higgs bosons and their corresponding higgs field is what gives objects mass..from there maybe we'll discover the carrier particle for gravity?
In the middle ages certain levels of stupidity were attributed to insanity and those people would be jailed, while I don't have the power to do that here, I can lock this thread because the amount of misinformation/simplification is a threat to the future of mankind.
If you want good usable information, go to a physics forum, many exist. If you want to continue trolling/feeding the troll, well, I'm stopping that here.
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