Light and its supposed speed.
Posted: Thu Aug 03, 2006 7:44 am
gone
"The heavens declare the glory of God; the skies proclaim the work of his hands." (Psalm 19:1)
https://discussions.godandscience.org/
Fair enough, and neither do any scientists, really. Until they can explain the reasons behind Quantum Phsyics.Jbuza wrote:My underlying point is that I don't understand about light.
Being bound by time and space it's inherently problematic to project our experiences into what God must experience. Having said that, I have always seen it kind of like Men in Black, where the whoel galaxy is inside a little ball. The whole universe can be seen at once and then God can 'zoom' in to any point. Then there's the time issue, and that becomes beyond comprehension because we simply cannot escape time. Like a ball with a slider below where it can be moved to show any time in all of history. Except then the slider must be infinitely long, so that doesn't work. LOLJbuza wrote:My question now becomes what if you observe it through the frame of reference of infinity? ... I would ask if we turn on a flashlight and God were standing on the boundary of space how long would it take him to see the light arrive?
I agree with a lot of what Felgar wrote, but science is never going to be able to answer the why question. Also, quantum mechanics only says what might happen, not what will happen.Felgar wrote:Quantum physics also has a lot to say about electrons (according to quantum physics we can never know the exact position of electron) yet we do know that electrons have mass and therefore are actual physical objects. ... Well, only in the sense that Quantum Physics does not explain *why* things happen, but only what will happen. As a predictor of behaviour the theory is extremely good but as an explanation of why, it is entirely void.
Feynman's quote was about quantum mechanics, not light.Jim Walker wrote:"One might still like to ask: 'How does it work? What is the machinery behind the law?' ... -Richard Feynman
Perhaps we cannot find a basic mechanism of light for the simple possibility that it may not exist. ...
it holds atoms together, creates the properties of chemistry and of every element in the periodic chart. ... Scientifically, light has received the most scrutiny of any other force and provided physicists with its most acclaimed successes, with predictions within one part in millions. ... If it exists in space, what describes its shape, size, and boundary limits within space-time?
All of these have been done, radio frequencies are electromagnetic emmisions just like visible light waves. The various probes which we have sent into space throughout the years have verified that radio waves take a certain amount of time to travel back and forth between the Earth and the space probe.Jbuza wrote:How many of these things have actually been done? I'm not saying that for any reason other than curiosity.Felgar wrote:But to answer your question let me first establish that when we turn on a flashlight on Mars, it takes about 8 minutes until we see it. From Saturn, a little over an hour. From the moon, about 1 1/4 seconds. So real-world results tell us the speed of light.
I don't have time now to go through this article, but I will revisit this subject at a later time to rightfully tear apart the garbage that it is.Jbuza wrote: If found this source to have kind of an interesting take on light
http://www.nobeliefs.com/light.htm
"Imagine that the phenomenon of light occurs only at the time of emission, reflection, defraction, and detection in matter, at the electron level, and nowhere else. Immediately, we eliminate the concept of light as discrete particles or waves traveling through space. Once you eliminate the concept of particles, waves and trajectories, the paradoxes, except for one (I'll explain later), completely disappear!"
My understanding is that light can in fact bend spacetime, which is ultimately the creation of gravity. Expirements are being conducted to validate this fact, but it is predicted by General Relativity, if I am not mistaken. Dr. Mallet of the University of Conneticut is working to demonstrate that lasers can bend spacetime.No one has yet proved that light can gravitate, regardless of how many descriptions say that it does. Beliefs, regardless of how many believers, do not equal proofs.
Quantum Physics only describes 3 force particles and NOT gravitons. There's currently no workable theory that introduces particles as force carriers of gravity (which would be called Gravitons). Well, there is String Theory, but from my (limited) understanding, that theory is still very well 'in development' and has by no means surpassed standard Quantum Theory as a usuable model. String Theory also has the issue of (maybe) being impossible to test with real expirements, and as such can be argued to be more of a philosophy and not a scientific theory. General Relativity is currently the only workable theory that allows us to calculate and predict gravity effects, AFAIK.But wait! If nothing can escape, if everything gets dragged back, how can the gravitational force, itself, escape to influence other stars and matter? Gravity, according to quantum physicists also comes in the form of discrete particles called "gravitons" which can create waves and ripples through space at the speed of light. How do gravitons manage to escape black holes?
You are right, things are connected, and simple fact is that we just don't know how these things are connected. We have no idea whatsoever how quantum entanglement works, only that is has worked so far.Jbuza wrote:Isn't the whole of creation a connected entity of God's design, and not amounts of matter x distance apart that influence other bits of matter in quantifiable delays? I say that my own reason and simple mind tell me that everything is connected in a way we do not comprehend.
Bgood is correct, they have all been done in practice on real spaceships and robots and that's why I chose those examples.Jbuza wrote:IS a radio transmission really the same as visible light emenated from a supernova? I know that visible light is on the chart of electro magnetic waves, but then what of a photon? Does a radio signal actually behave the same in all the clever tests men have devised to learn about light?
There are of models that say that light is a particle. Is a radio signal made up of photons?
sandy_mcd wrote: It seems that the author is trying to extend quantum mechanics to light. Just as electrons only exist as probability wavefunctions until there is some interaction, he seems to be trying to say something similar about light without explicitly making the connection.
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I agree with a lot of what Felgar wrote, but science is never going to be able to answer the why question. Also, quantum mechanics only says what might happen, not what will happen.
The machinery behind the law is the key truth - we must find it eventually.Jim Walker wrote:"One might still like to ask: 'How does it work? What is the machinery behind the law?' ... -Richard Feynman
You have to be really careful here. According to relativity, gravity has no physical presence and is just a manfestation of bending spacetime. The best example I know is that if you put a 10-pin bowling ball in the middle of a trampoline. The canvas curves toward the ball. Put a small marble on the trampoline and it will be attracted toward the bowling ball. In the same way, the 'gravity' is the result of the curvature of spacetime and is not, itself, an actual substance. That is, until they develop a theory for Gravitons, or somehow validate String Theory. The graviton is to gravity, what the photon is to light.Jbuza wrote:And the thinking from the same supposed law that only physical mass can act on the physical world, we propose that gravity has physical prescense.
The guys theory seems alittle far fetched when one supposes SR and GR to be true, and I think he deserves a lot of credit for trying to make sense out of light in a way that makes some sense.