I hear the research has been looking up.
Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
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Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#32To really be able to manipulate gravity, you would also need to manipulate mass, and so far nuclear is the only way I know of, in which we do that, but uhh.. I don't think we'll get anti gravity until we can control mini stars... Little nuclear engines.
I change the location of my gravitational field every time I move my body. I modify my gravitational field with every breath as I breath out heavier gases and breath in lighter gases.
The thing about gravitational energy is that it's the weakest of all fundamental forces. Nuclear energy is more about releasing the energy stored in the Strong/Weak Nuclear Interaction than it is about gravity.
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#33If you do not work on an important problem, it's unlikely you'll do important work. It's perfectly obvious. Great scientists have thought through, in a careful way, a number of important problems in their field, and they keep an eye on wondering how to attack them. Let me warn you, `important problem' must be phrased carefully. The three outstanding problems in physics, in a certain sense, were never worked on while…
Time travel back into the past is understood to be impossible.
Lots of things were understood to be impossible until they weren’t.
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#34Earlier quoted context omitted.
Time travel back into the past is understood to be impossible.
Physicist here (by degree, not profession). What you state is not true: by currently accepted physical theories, time travel to the past IS very much possible. It's known as a "closed, time-like curve" in the literature. Now, most mechanisms explored for doing so wouldn't allow travel back further than the initial creation of the time travel device, so you could say that time travel to our past is not possible since…
I've never understood why "paradoxes make cause-and-effect-reasoning difficult" concerns are a valid argument that something could not be possible. Does physics care whether the workings of the universe are accessible to our logic?
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#35Is this article just a derivative of the patents that were discussed on HN several weeks ago?
I liked that discussion. Plenty of varying perspectives such as "Bob Lasar was proven right!" and "in an arms race, keep your enemy busy [with disinformation]".
Is there new info here?
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#36Earlier quoted context omitted.
> Physics, as currently understood from available experimental evidence, 100% allows time travel to the past, paradoxes included. General Relativity, which is where the term "closed timelike curve" is used, does not allow paradoxes. A spacetime with closed timelike curves in it (for example, the Godel universe) still has only one thing happening at each event. The real problem conceptually with such solutions is that…
Luckily "free will" as would fit a layman's interpretation of the term is already incompatible with physics, so the existence of CTCs doesn't pose additional problems.
> "free will" as would fit a layman's interpretation of the term is already incompatible with physics
That depends on which layman you talk to and which theory of physics you are using.
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#37They must have some reason to think it's possible. I've also always wondered if Coral Castle was really constructed using some ancient lost technique to harness this power. Takes foil hat back off...
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#38Which is totally a coincidence that that's around the time of the Roswell crash.
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#39What is the currently accepted answer to the question, "what is gravity"?
Re: Military Has Been Researching "Anti-Gravity" For Nearly 70 Years
#40What is the currently accepted answer to the question, "what is gravity"?
Curvature in spacetime.