Theories Definition and 466 Threads

Karl Popper asserted, in brief, that all theories are eventually falsifiable. What of a theory (quantum mechanics?) that embodies probabilities such that its truth and falsity are apparent a priori (a violation of Goedel's logic?) If probabilistic theories are proved necessarily falsifiable...

Hi people. I have decided to go ahead with this on my own if no one helps me (nudge nudge, if anyone wants to help out on a rather large project, then feel free to email/PM me . Primarily my major concerns are webdesign, and possibly marketing/advertising aspects.) Anyway, the idea which I...

As theories go, here's something new. A very simple foundation theory based on Energy, with free software to back it up. http://www.gamert.co.uk

Hey guys! I was wondering, where could i find elucidating Physics books on String theories, quantum mechanics (QED, QCD, QFT, LQG, etc) and all related on the web? I've done some search, but all i could come up with was an electronics and engineering related forums, and that is not in my...

all theories in physics are incorrect ! yes that's right. because 100% percent of the theories are using; approximations, incorrect perturbations, assumptions and so on. that is not valid for the behaviour of nature. physics is a kind of battle to understand the nature not to modify it...

Are we so certain of dimensional fields as expressed in recent theories? true we know of three for certain, but can it be possible the 10 or 11 maybe even more dimensions are mirroring the 3 principle dimensions?

do string theories need gravitational radiation as in GR?

i can not seem to find any good or relevant information on the five different string theories and how they differ from one another. i know of, and to the best of my ability try to understand 'basic' M-theory but am very strapped for info on the other theories and their specifics. if some one...

I didn't know whether to put this one in maths or physics, but I'm interested on what people on PFs think are the consequences of Goedel's first incomplteness theorum are for physical theories in general and in particular for the idea of a single comphrehensive theory that can describe all...

Looking for theories that describe "time" The more radical the better. I'm trying to start up some interesting conversations about time at http://thinkbling.com/forum Please post any comments that you may have and want shared there. For now this will only be for this category.

"Even today -- the 34th anniversary of the Apollo 11 landing, the first arrival by astronauts on the lunar surface -- there are people who think the whole program was a sham." http://www.siliconvalley.com/mld/siliconvalley/6350437.htm

Chern-Simons theory is a 3d-TQFT and Crane-Yetter model is a 4d-TQFT There exist another Topological Quantum Field Theory apart of these two models?

can anyone tell me what the latest theories are for inter stellar propulsion, and has the problem of bone loss on long space flights been solved?

I've heard that if one of these theories is correct then the other must be wrong. What exactly is the conflict between these two theories?

I want that you tell me your crackpots ideas. I'm curious. Ideas against the mainstream, but that can be hidden pearls. There are some of mine: -For me the Universe is or an alive organism living in its own cosmos, or a creation/experiment of some kind of upper intelligence. I'm not sure what...

Here is a horribly misguided theory from my youth. I polished it up a bit and gave it a name. If anyone wants this theory, they can have it. MicroElectroMagnetoValence Theory Tenets:[list=1] The fundamental electric and magnetic charges are 1/6 of the elementary electric and magnetic...