Anti-gravity Definition and 39 Threads

In ever space science friction involving a light speed or near light speed or even beyond when they engage warp drive or drop out of warp drive they persons on board hardly twitch yet if an aggressive ship fires upon them or some gravitational wave hit them suddenly they are all thrown all over...

I hope this is okay to ask here. I'm working on a sci-fi short story, and for the purposes of the story I want to have a small ship that maintains its position over a specific location on the Earth's surface. Originally, I thought this would be easy. After all, that's what geostationary...

https://www.theguardian.com/science/2021/mar/05/ship-hovering-above-sea-cornwall-optical-illusion

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...

We all know that starships in Star Trek have artificial gravity. They also have inertial damper. Therefore, we can conclude that they have the ability to counteract gravity. However, as those technical manuals of Star Trek tell us, starships are using impulse drives for slower-than-light...

klotza submitted a new PF Insights post Roger Babson's Anti-Gravity Contest Continue reading the Original PF Insights Post.

I can't find any good sources on the science behind Project Greenglow. All the articles I see are full of fluff. Are they trying to divorce gravitational mass from inertial mass? i.e., trying to get more gravitational mass out of less inertial mass, or I should say more space-time curvature from...

If the unit of gravitational force is the Newton (where the value will be positive) would the unit for a hypothetical anti- gravitational force be a negative Newton?

I've recently created a 3D motion generator (Anti-Gravity Transportation (AGT)) in 2D/3D design. unfortunately my current physics knowledge is not advanced enough to take this machine to its maxium potential. i can concieve perpultion and sustainable energy coming from this idea. my question...

So my question is, if a laithwaite engine (my attached photo) spins fast enough, will it be able to lift off the ground? And if yes, what's the maths to calculate the speed needed to make it lift?

Am I reading some more recent articles on quantum gravity correctly that seem to be implying that a coherent particle is not subject to gravity? If you have a coherent C70 buckyball molecule (see Zeilinger - Update: "Matter-wave interferometer for large molecules", Jan. 2002), the force of...

I'm trying to provide a simple technology for vehicles to float above the ground in a sci-fi story I'm writing. Star Wars landspeeders use anti-gravity, which I suppose I could use as well. It's not unique to Star Wars, although it was popularized by that saga and I was hoping to do something...

Im watching some documentary on alien spaecraft, it was said that propulsion for one of these crafts would need an anti-gravity device. My first question is it even possible for an anti-gravity device to work according to the laws of physics. Second, if the field turned on you would need to...

There's a theory being proposed that the reason for the expansion of the universe is because of the mutual repulsion of matter and anti-matter, in what is essentially anti-gravity: http://www.universetoday.com/84934/antigravity-could-replace-dark-energy-as-cause-of-universes-expansion/ So...

Physics, astrophysics, etc... have always been near to my heart but far from my brain. My math skills are probably nothing compared to many of you out there. But Attaining great feats in science that years ago was science fiction is no greater acheivement to me. I think anti-gravity or...

Hello i was just curious on whether anti-gravity, theoretically speaking is a poissibility. Through Einstein's models of general relativity he explained that gravity wasn't a force, but a direct result of the geometry of space itself. Therefore making the possibility of anti-gravity highly...

interesting video. The more research I try to do behind this - the more confused I get. Apparently he uses some form of diamagnetic levitation which some say was faked for the documentary. I'm skeptical but I have to admit the video is damn interesting.

"anti-gravity globe" question I had a question about the anti-gravity globes, and used to wonder if they would still work if flipped upside down, I now realize they won't when I actually thought about it. However, is there anyway to suspend an object using magnets with the base on top? I...

We've all wanted to fly before. We've all wanted to have a flying car. We've all wished we can just take off and land somewhere else. There are flying cars trying to be developed (example; mollar skycar) but i can't imagine them flying because they might not be very maneuverable and they...

I was wondering about a question that popped into my mind recently -Let's say, theoretically, a device existed that could reverse the force of gravity somehow, to the point were it created antigravity. Since black holes are held together by their own gravity, pushing molecules closer than...

I don't understand the reasoning behind trying to discover anti-gravity. Attach a rocket to a load and make it accelerate at 9.8 m/s^2 and youve got an "anti-gravity" vehicle. It defies gravity as if it didn't exist. So reasoning says, what would be the use of anti-gravity if it did exist and...

Hey guys, I was just chekin out some vids on youtube and found this. Of course, this is too hard for me to understand "yet". Please watch this video and tell me if this guy's just a lame liar or he actually knows what he's talkin about. Thanks!

Alright, don't take this seriously. This is just a what if situation calculation: So I was thinking. Atoms possesses charges. Particle possesses mass. Charges produce electric field while mass produce gravitational field. A changing electric field produce a magnetic field. What unique...

I saw a trick were a guy supposedly levitated a dime with batteries, a cd, a phone, and a pepsi can. I see no reason to believe this is possible, but I'd like to find out if it is. The video is http://www.break.com/index/anti_gravity_trick.html I would appreciate some clarification on this...

Here are 109 articles (or books) http://arxiv.org/cits/gr-qc/0102069?skip=75&db=spires which all cite Bojowald's landmark paper where he determined that in Loop cosmology gravity REPELS at very high density. Here is the orig: http://arxiv.org/gr-qc/0102069 the original paper dealt with an...

How far are we from developing this technology, also, what idea and technologies are being used to propose this to make it a possible reality?

BBC NEWS: Boeing tries to defy gravity "The project is being run by the top-secret Phantom Works in Seattle, the part of the company which handles Boeing's most sensitive programmes." I think this article is a cover story/ program. They may already have anti-gravity figured out and of...

Perhaps it is a stupid question, but really confuses me. In QFT, virtual particles can be produced from vacuum, say, (M,0,0,0) and (-M,0,0,0) In Einstein's theory, if we consider the (-M,0,0,0) virtual particle, make it's energy-momentum tensor and solve the Einstein equation, and take the...

If gravitons do exist, will an anti-graviton repel matter(anti-gravity)? Also, can we, reasonably, assume that the graviton does actually exist?

Sure anti-gravity technology is possible in your garage. Bet for $1,000? and will send you the design. Anyone else interested. Russ? $1,000? Edit by Ivan: Split from https://www.physicsforums.com/showthread.php?t=50321&page=3&pp=15

Does something like anti-gravity exist, in theory? I mean two masses repeling each other. Or in terms of space-time: an upward curving. And if so, does that result in anti-mass?

hi just tinkering around with the idea of anti-gravity and i think i came up with something disproving it's possible, i can't explain right now (homeowrk) but i need to know if anyone has any ideas on how to break einsteins theory that matter cannot be created or destroyed. is there any way to...

Hi, what are the latest developments on black and white hole-theory and how they can be viewed as timetravelling configurations? I read that one should apply anti-gravity in order to make such a wormhole stable. Please some comments on that thanks marlon

interesting article and lots of links to anti-grav and free energy. :smile: http://www.para-normal.com/nuke/html/modules.php?name=News&file=article&sid=1560&mode=thread&order=0&thold=0

http://www.detnews.com/2002/schools/0212/03/c03-24756.htm Detroit News-Darren Jacobs "Dearborn High School students Ethan Rein, Jim Bergren and Luke Duncan are breaking the law -- of gravity. ___Rein, a senior, and juniors Bergren and Duncan, have built an anti-gravity aircraft that...

The STO (Stellated Truncated Octahedron) Peep this----> http://groups.msn.com/shamanism/shoebox.msnw?action=ShowPhoto&PhotoID=7 I first came across this polyhedron geometric shape reading Allan Holden's Space, Shapes, and Symmetry. No refference or information is alluded to in the...

New technology from 'black world': CNN http://www.cnn.com/2003/TECH/09/05/wow.tech.black.world/index.html

Somewhere on the web, it was calculated that the attractive force between two plates each having a surface area of 1 square meter and spaced 1 micron apart would, due to the Casmir effect, be attracted to one another with 0.13 grams of force. Assume machining such plates with the necessary...

Did anyone ever see on TV or read about (I think it was released to the press sometime late last year) the scientists who built that electromagnet that counteracted the force of gravity? They put a couple of different pieces of organic material in it and they started floating, one of which was a...