Adding Reply Archived Topic: It will not be bumped to the top of the forum. Topic Does gravity exist? Membername   Not a member? Sign Up Free (takes 20 seconds) Password   Forgotten your password? Post Font: Verdana Arial Black Georgia Comic Sans Impact   Size: Tiny Normal Big Huge   Color: Default Dark Red Red Orange Brown Green Olive Cyan Blue Dark Blue Indigo Black [ Check Spelling ] [ Post Preview ] [ LiveTags ] FAQ Keyword Search: Post Options Favorites Manager Notify me of new replies to this topic by email Notify me of new replies to this topic by private message Original Post azp Posted at 7:59 pm on Dec. 8, 2006 I was just wonderring the other day, does gravity exists without matter? For instance, if we obliterate all land and all other substance within earth completely except for gravity, whats going to happen with this force? Would it still exist or would it just suddenly vanish? After a while, this question lead me to the theory of formation of blackholes, since the purpose of gravitation is just suction built on the foundation of land and since my perceptions of blackholes is suction without land, I believed this is how blackholes are formed. I never taken any science courses, so I wouldn't know, but if any of you do take science courses, is my assumption correct?

Replies norock Posted at 10:32 am on Jan. 13, 2007 ^^ dont forget gravitational repulsion due to exotic matter in the middle area of the holes... anyway. gravity is more than "if you jump off a building you will fall" yes, it is a theory. but it is how we describe the planets revolving around the sun the way they do. and many other things that happen not only on the planet, but in the universe as well. GRAVITY as we describe it exists. whether or not we are wrong about what it actually is is the theoretical part. rosemarygirl2002 Posted at 12:00 am on Jan. 13, 2007 Black holes have matter, very, very, very, dense matter, but it is matter. There isn't just a hole of nothing in space. You can't have gravitational attraction without matter to be attracted. aotredem Posted at 11:47 pm on Jan. 12, 2007 Gravity in and of it self is a theory. Which has yet to be proven true, many people believe it to be true because well, when you fall off a twenty story building, the key is you fall, not float. I'm not saying I don't believe in gravity I'm saying what the scientific community as a collective whole has simi-agreed upon. You had Einstein with his theory of relativity (e=mc^2), and you have the string theorists and their respective theory. All in all gravity is a THEORY, we know its there, we just really don't know what it is (I hope that makes some sense). Thats basically all I have to say, I'm sure I meant to put more in there, but lack of sleep and a large headache prevent me from doing so... Aotredem norock Posted at 11:55 am on Jan. 12, 2007 you cant just change it... also, i dont know if you purposely did it, but i like how you wrote "and black holes will exert a force on any matter.." instead of "black holes will have matter gravitate inward" or "black holes will suck matter in" because it is speculated that black holes (and the exotic matter there-in) work omnidirectionally, sucking one way then pushing after reaching the center. and vice versa. if worm holes only sucked in, as many people believe, then anything traveling through them would be stuck in the middle, unable to exit the mouth on the opposite end. BEER Posted at 11:47 am on Jan. 12, 2007 norock Posted at 11:39 am on Jan. 12, 2007 syckid92 Posted at 8:16 am on Jan. 12, 2007 Gravity would still exist. There would just be nothing for it to act on. The earths iron core is what causes the gravity on earth so if you took away the core and, as was stated in the original post, all land, there would be no gravity and no black hole. AtomicCactus Posted at 6:28 pm on Dec. 23, 2006 Does gravity exist?  No, no, not at all! norock Posted at 1:51 pm on Dec. 23, 2006 gotcha. "Yes" ^^ ha ha, i like it, short and to the point Gotetsu Posted at 1:15 pm on Dec. 23, 2006 Yes The Samsoniteman Posted at 10:08 am on Dec. 23, 2006 I could see you understood it, that was to "TheKK". norock Posted at 10:07 am on Dec. 23, 2006 obviously, its not like space-time is an actual fabric. i figured people in the thread would know that already, since the topic was already adressed The Samsoniteman Posted at 6:42 am on Dec. 23, 2006 The "deformation" of space-time is a pictoral analogy of how gravity works on a macro scale. It doesn't actually exist. TheKK Posted at 4:46 am on Dec. 23, 2006 Well actually, the cause of gravity is kind of still unknown (could be gravitons as likely as it could be a deformation in the space-time continuum). norock Posted at 9:39 pm on Dec. 21, 2006 Gravity is the resultant force of the pull between two objects due to the relationship between their distances and their massive (not meaning huge, referring to mass) depressions in the space time continuum. if there was no mas to depress the continuum, there would be no existing gravity. its not like a sound (ie if a tree falls and no one hears it does it make a sound?) wherein you have vibrations, and if you were to take away the particles that vibrate, it would cease to exist. Most recent 15 of 72 previous replies displayed.