Hi,
I have a simple question that will probably have a simple answer.
If the Big Bang was a finite event (i.e. took place over a certain amount of time) why is it that the background radiation from it as sensed on Earth (TV static) is continuous? Will it continue to be continuous forever? How...
So is there then an example demonstrated by Einstein's physics where time for another body would appear to go at all in the negative to an observer.
(is there a scenario where one can witness events happening "backwards")?
Hi there,
I have a question.
To me, measuring spatial dimensions is quite a bit different than measuring the time dimension. I was thinking the other day and it seemed very obvious to me what the main difference was.
Time never goes the other way. A dimension defines two equal and...
"Again you appear to be talking gibberish here. If light speed "is infinity" then it can't have a finite value like 300,000 km/s."
yes, that is true. 300,000 is NOT infinity. But geometric infinity is 1 + the square root of five over two. And that has a value - 1.6180339887... that value is...
No, I can't show you a huge difference. I bet that I can show you a very small one. I bet I can show you an even larger difference between that and the refraction index of water. What I'm getting at is that you can get closer and closer to it, but you can never find the exact speed of light.
"the factor by which such small number of particles actually slow light down would presumably be too small to make a difference in the number of decimal places we are capable of measuring its speed anyway."
How do you know that? Prove that light speed in a vacuum would not be an irrational...
I'm not saying it does
I'm saying that it is impossible for light not to run into matter. c will never be the speed of light. c will only be the speed of light in a (very very hypothetical) vacuum.
In the deepest regions of space, molecules still exist 10 meters apart. Matter is still there...
"OK, since this is physics and not philosophy, can you please show me an experiment that measured the speed of light in our false vacuum and showed that it is below the published value for "c"? Can you also open, say, the standard value of c as published in CODATA and tell me how they were able...
Then what is now? when is now?
You say "show me these things at the same time" but special relativity denies the concept of a "same time" or "now"
So obviously, I need to show you these two different things in two different times.
Everything changes. Is it possible that between the time...
You still have not shown me why. If they were not the same thing, they could exist without the presence of the other. We see no examples of this, so don't we have to conclude that they are inseparable, and therefore, for all practical purpose, the same entity.
Has anybody made any connections so far that link absolute 0 with light speed. Just as you can never have an electromagnetic wave at rest, you can (apparently) never have matter at rest.
If you are traveling as fast as the speed of light, (which you can't unless you are light), all other...
Ice looks much different than water, but I know it is the same thing in two different references of time. If I show you the ice cube, and I show you the water, you tell me that the ice cube does not conform to its container. You tell me that the ice cube is lighter than the water. You tell me...
How do you separate the existences of space and time? If there was no space to travel, would there be time to travel it? If there was no time, how could you travel through space? Prove to me that they are not interchangeable in the fashion that they need each other to exist.
"If I pursue a beam of light with the velocity c (velocity of light in a vacuum), I should observe such a beam of light as a spatially oscillatory electromagnetic field at rest. However, there seems to be no such thing, whether on the basis of experience or according to Maxwell's equations. From...
And you still haven't answered my question: what percentage light speed would you have to be going for a million years on Earth to pass in one second for you?