Reality Definition and 413 Threads

What does the future of virtual reality look like? There are a lot of hype out there for its future. What do you guys think? You may also share any articles, videos, etc..

Hello All, I'm not really sure if this is the spot where I should post this, but I'll give it a shot. For the last 2 yrs. I've been working on improving the current generation of Augmented Reality glasses (transparent display or "see-through" display glasses). The main reason you only see...

Some stunning examples of a technology that (I think) will really change how we live our lives in the future. http://news.bbc.co.uk/1/hi/programmes/click_online/9522194.stm If you have an iphone you can get the free app, print the markers and see for yourself!

Simple thought experiment I read and would like to hear what others think will the result will be: Let two spaceships A and B accelerate along a straight line. Observer C does not accelerate. The accelerations, as judged by C, are constant for both ships. Each ship is equipped with a...

I listening to Brian Greene's book! i.e. the audio book. There is something that is mentioned many times, but I don't recognise the word / language, so forgive me if the spelling is very wrong(!). Basically, when explaining the variations on the CMBR, he refers to something like an "implonton"...

Please forgive my lay understanding of String Theory, but when contemplating it, I am drawn to two questions; one at a level 'above' string theory and the other 'deeper'. I will begin with the former. As is my limited understanding, strings, according to restrictions placed upon them by the...

I mean to say whose popular sci-books do you like more Stephen Hawking's or Roger Penrose 's ? I like Penrose as he doesn't shy from using mathematics. So he is likely to present a better picture to the general public. And that may even ignite their interest in mathematics. Also he...

Hi, Reading about quantum mechanics, the probability wave is so that a particle can be everywhere. But when observed, it's probability wave collapses and the particle has to take a definite state. The example were given for Schrödinger's cat, which is either alive or dead only after we...

Just trying to explore the ontological possibilities that Quantum Mechanics have created, I would like to make a list that covers the variety of ways of thinking about reality, using this question as a starting point: QUESTION: What is there when we do not observe? 1.- We don't know...

I wish to discuss how does one rationally go about understanding the world we live in. There is the scientific approach of empiric data and evidence etc. There are philosophers who come up with many different ideas based on their rational thinking and there's religion that claims so many...

Okay, so it seems like some people do this, I thought I was the only one. Do you have an alternate reality or other life that you think about? I know some people may see this a stupid, but let's face it, we've all come to a fork in the road in life and sometimes we wish we had taken a...

in the experimental side of QM, I know i can use a slit to measure the q. but what about p or E? and how to conciliate the measure with the theory?: after the measurement of a slit i'll measure q and the system will collapse in a autovector of q, like |q> but it will evolve like a...

First of all. We must not have any a priori or preconceived notions of what is reality but instead follow the evidence of what is the true structure (if there is) of reality. The Dirac Equation is one way to start. It predicts spins of particles and antimatter. How come the mathematics of it...

I couldn't determine exactly what section this should fit into, considering that it does cover philosophy and most likely violate the QM section I figured it's best here. If the Mods feel otherwise please let me know. I realize putting this thought to paper is like pinning a cloud to the...

I'm working on augmented reality engine and I have a following problem. I'm tracking a 2D rectangle tracking picture inside an other picture (webcam stream). I have detected all four 2D corner coordinates for that tracking picture. Now I need to calculate from the corner coordiantes how the...

How real is reality?! Given what we know about quantum physics and the result of 2-slit experiments, is reality really how we view it?

I was thinking about the pressure build up in a system that is squeezed equally from all sides (or at least in two dimensions, like squeezing a tube of toothpaste), and I ran into a conundrum. If the pressure increases as the area decreases, then the pressure inside a circle that's squeezed...

We know that the laws of physics are unique to our universe, that is they only hold true in our spacetime. My question is about logic and if logic holds true outside our universe unlike the laws of physics. For example, if we say that x>y and z>x then we can conclude that z>y is true by logic...

What evidences support or contredict Vygotsky's philosophy of mind? I'm interested specifically in the experimental evidences supporting or contradicting: 1-that self-awareness in human is the result of language 2-that any "higher mental abilities" is the result of language and cultural...

When will quantum computers become useful? For example, cracking some real-world encryption, simulating quantum behaviour of molecules, or enhancing web search engines? I somehow have the impression that this is a field of physics where theorists keep dreaming and experimentalists keep playing...

Sometime ago I read about a cognitive bias by which people tend to think that reality is what they see/read in the news. I don't remember the name of this bias and was wondering if anyone could help find it or a similar one. Thanks.

Everyone has heard that a butterfly flapping it's wings in one place may ultimately cause a tornado to form in another place. I really have a problem with this. It has also been said that if all the molecules in a cup of coffee were to move the same direction at the same time that the coffee...

Does anyone know where I can download this article, or perhaps if someone has this article they could please attach it to their reply? http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=6914572

"if Quantum Mechanics (QM) is complete (and there are no "hidden variables"), then there cannot be simultaneous reality to non-commuting operators" - Taken from http://drchinese.com/David/Bell_Theorem_Negative_Probabilities.htm I am trying to understand this sentence but I do not fully...

I would like to start a brain storming thread, listing all the possible complications that would arise from NOT having SR. SR is what makes our reality what it is, so I expect that without SR, some serious complications would arise. Surely SR, is not just some insignificant nuance of reality...

This might sound stupid but, does consciousness = reality? I don't know if that makes sense or not, but I guess what I'm trying to ask is, actually, I don't really know what I'm trying to ask... these type of thoughts are all new to me

New FQXI essay contest "Is Reality Digital or Analog?" It's been a long wait but it's here at last http://www.fqxi.org/community/essay (It was actually launched 4 days ago - they seem to keep it pretty quiet)

Is "Infinity" only a mathematical concept or is there anything infinite in reality? I mean ∞ is indeterminate in a way such that any of the following expressions can be constructed: ∞ - ∞ = 1, ∞ - ∞ = 0 ∞ - ∞ = ∞ Is there anything in reality that can actually behave like that?

I heard about this a few days ago and wanted to know how it works and what are the benefits? I have tried a demo where you hold up a photograph in front of your webcam and something happens... and also is AR in practical-use nowadays??

I’ve got few simple questions (and views) about which I’m pondering on for some time now and since I’m layman on these topics I’d love to hear thoughts and insights about them from some of the great contributors at this forum. Thank you! -- Is gravity in center of star highest, lowest or...

I've been developing a hypothesis about how the physical reality must be like and work. The physical reality would be composed by a homogeneous existence that is made up by itself, that solely exists. This is how I defined space. The space has a finite and perfectly spherical shape that...

Hi all. Sorry if I am posting in a wrong section as I am new there and di not figure it out where my post belongs to. I would like to ask about energy weapons in fiction and reality. We have movies, video games, novels where lots of weapons (of different designs) are used. As far as I...

I, as with Albert Einstein, shall always side with Issac Newton; that is to say, that light is corpuscular. There is no such thing as a light 'wave'. Sure, Thomas Young threw the world of physics a curveball in 1802, backed by Huygens and his somewhat sound reasoning (for the time). But who...

Seething expanding geometry--new LQG view of reality A view of reality emerging from current LQG research (like 1004.1780) is somewhat analogous to the "seething vacuum" of quantum field theory. But it is a "seething geometry" in which bits of area and volume constantly come into existence and...

It is often argued that the psi-function exists only in the context of calculations.But is this concept true if we take into consideration the celebrated Aharonov-Bohm Effect where interference is produced by differences in the phase factors of the psi-function? It seems that there is a certain...

"The truth is absent in class; Reality is absent minded. And you would have to be a grand idiot to not realize it too. You saw the magic show. It coaxed you away with riddles and illusions; Compliments to say how smart you were. It should be obvious how stupid you are, yet you favor your...

I have to gain a real deep understanding of everything I'm learning in university and luckily for me I don't have to work to survive so I can put all day every day into learning which is what I like to do because I love learning about scientific fields. How do other people that aren't as...

If, according to Einstein, that space-time is a "fabric", could there be waves in this "fabric"?

Hi Guys, I seem to have gone in circles YET AGAIN! When discussing the expansion of the Universe I was told by friends that masses and objects do not expand with space because the forces within the mass are so much stronger than the inflationary force. When discussing General relativity we...

Mathematical constructs may or may not agree with reality (that is observed by us through our senses or high-tech instruments). What’s the touchstone that a mathematical construct for a theory is the right one and would not be violated in future? For example the mathematics that was used...

Just a small example? (It can be extended as per will) A person (X) and his friend (Y) are sitting in a room that has a table placed in the centre. X says to his friend, 'Can you determine whether the table is in the exact centre of the room or not?' Y says, 'I go even further, this table...

Hi, what was first: the time or a change? a) time - time enables changes - time exists physically - spacetime exists physically - gravity/acceleration bends local time - high speed bends local time b) change - changes enable us to create concept of time - time...

Hi, I was wondering if someone could share their experiences of doing an undergrad degree in maths in the UK, and particularly the way the subjects are introduced at the start. (Directions to more info would also be appreciated :)) I am originally from Germany (but have lived in the UK...

The term "reality" is merely the sum of our perceptions, nothing more. What are your guy's thought on this above statement. Also, what are some ideas from other philosophers that support or oppose this statement.

I can't connect my mathematics with "reality" I'm in a school where we work a lot with electrical circuits, which include a lot of math. Sometimes the teacher tries to connect the circuits with reality, like giving them a "physical" meaning, like trying to explain how a stove works. When he...

In a recently released computer game there is a scene where a nuclear bomb goes off in space over the active war zone on the east USA coast (too high for anything but EMP). Moments later, it starts raining helicopters and everything that uses electricity, from lights to laser sights goes out...

do antibonding molecular orbital exist in reality or is it an empty space in which an electron can move about freely and not involving itself in bonding. if they exist then how can the 2 atomic orbitals interfere both constructively as well as destructively simultaineously to give both...

Is there a firm boundary? For example, if a scientist makes an observation which is probabilistically determined, his actions (for example recording data) are altered, although we would generally think of a scientist as a deterministic system. How do physicists deal with this conceptualy?

I’m reviewing my mathematics knowledge, except I’m looking for a different reason. I understand how it works you know, 1 plus 1 so on, I’m trying to understand why it works. Pure and applied mathematicians and physicists have tied our understanding of reality with mathematics. They believe...

So this is the deal, I'm 17, and I have a passion for science, especially Astrophysics, and I want to major in that department, but the thing is, a lot of people that I know tell me Astrophysics is way too hard, it's not stable, you need to be a genius to make something out of it, not enough...