What is Anti gravity: Definition and 12 Discussions

Anti-gravity (also known as non-gravitational field) is a hypothetical phenomenon of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free fall or orbit, or to balancing the force of gravity with some other force, such as electromagnetism or aerodynamic lift. Anti-gravity is a recurring concept in science fiction, particularly in the context of spacecraft propulsion. Examples are the gravity blocking substance "Cavorite" in H. G. Wells's The First Men in the Moon and the Spindizzy machines in James Blish's Cities in Flight.
"Anti-gravity" is often used to refer to devices that look as if they reverse gravity even though they operate through other means, such as lifters, which fly in the air by moving air with electromagnetic fields.What is commonly misconstrued is that while anti-gravity is the nullification of gravity, it is not repulsive gravity or negative gravity. Gravity plates and compensators as envisioned in contemporary science fiction also are not anti-gravity.

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  1. F

    Anti-Gravity Logistics: Pinned to Planet or Beyond?

    If an object was to lose its gravity for any reason, would it lose its reference frame to the planet and sun. Therefore keep going in a straight line? Or is there some other force that would keep it pinned to the planet. Also does this have any application to sci-fi anti gravity would it also...
  2. Solomei

    Is the TR-3B Patent Legitimate?

    Hey, is this patent legit? Does anyone know anything more about this? The information I can found about the 'TR-3B' are from non reliable / verifiable sources << Unreliable Source Deleted by Mentors >>
  3. Stephanus

    B Exploring Anti-Gravity: Is It Real?

    Dear PF Forum, I've been wondering lately about anti gravity. I read anti matter and came across this: https://en.wikipedia.org/wiki/Gravitational_interaction_of_antimatter And I'm curious to now. Is there really an anti gravity? And I've read this wiki entry...
  4. Newtonfalls

    A Understanding the Science Behind Anti-Gravity Spray on YouTube

    Hi, ok another strange question: how does this work: <link to video deleted> or what exactly is the science behind it? I saw it on BBC and they told something like "the low density of the gas is a result of the radioactive decay" i don´t get it. maybe someone could explain.
  5. R

    Is Anti-Gravity Levitation Possible for Human Transport?

    Fictious meaning that we doen't have anything, as of yet, that can levitate not above a mechanism that aids in its apparent floating capability. Such as a levitating spining top and the base that it needs to float on. Or an electomagnet that turns on and off repeadedly to give the illusion of...
  6. U

    Is Anti-Gravity Possible and What Would it Mean for Space Travel?

    Hello all. I am clueless when it comes to physics and I don't know where to place this thread so i'll just place it here. My question is: Is gravity just a force of nothing or can you actually take a sample of it. For example can you look through a microscope and see the atom or whatever it is...
  7. M

    How can I create the ultimate anti-gravity car for a physics competition?

    Tomorrow, I am going to a physics competition. Each going is going to be given some supplies (I don't know what yet) and we are going to have to make like an anti gravity car. Like a car that moves by itself up an inclined plane. Where can I find some background information or past models on...
  8. E

    Can Antigravity Unlock Space Travel and Pollution-Free Energy?

    It would probably be the biggest discovery known to mankind if we found out how to counteract the "force" of gravity. It kind of seems impossible; given that GR is correct, gravity is geometric, and is a result of curved spacetime. Perhaps if we found out about the "dark energy" that's...
  9. A

    Anti-Gravity: Debunking False Claims - Video

    I'm bored, i found this: http://video.google.com/videoplay?docid=-8635897559220353909&q=anti-gravity
  10. Schrodinger's Dog

    Are the CIA hiding evidence of alien anti gravity technology?

    A very partial transcript of the BBC interview is on this link and you can watch the whole interview: http://news.bbc.co.uk/1/hi/programmes/click_online/4977134.stm" I spotted this on my way round the web it's about a guys hacking into top secret computers involved with the DoD and NASA...
  11. C

    Could Anti-Gravity Ever Be Possible?

    Hello to everyone. I feel quite humble to be posting on this physics forum as I am not a physicist but I am in awe of such great minds. However, I do have a general interest in physics as I am an engineer. Unlike my father is an electronics design engineer for whom is the reason for my posting...
  12. C

    Anti gravity travels faster than light.

    If a mass has gravity and pulls on spacetime.spacetime is charged with the same type of energy that gravity comes from.gravity seems to pull energy in faster than light but its not confirmed.but what about anti gravity.if matter can pull energy that fast,what happens when anti gravity hits...