Einstein was wrong, the speed of light cannot be constant because it's immeasurable by his own theo

Originally posted by AlphaOphiuchi
Tesla disagreed with Einstein on relativity too.

Experiment agrees with Einstein.

Originally posted by Astyanax
reply to post by CLPrime

 

The recession velocity of objects at the edge of the observable universe, as measured by us, approaches the speed of light.

According to Davis and Lineweaver, visible objects may be receding at speeds greater than c:

Superluminal Recession Velocities

Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe

Enjoy!

If they are now superluminal, that doesn't mean they always were. When you look at an object at the edge of the observable universe, you are looking into the past. 13.7 million years ago things were a lot closer and didn't reach their present speed, or I should say their "apparent speed" until toward the end of the inflationary epoch.

reply to post by 4nsicphd

If they are now superluminal, that doesn't mean they always were.

Assuredly.

When you look at an object at the edge of the observable universe, you are looking into the past.

I am aware of this. In fact, whatever you look at, even if it happens to be your own big toe, you are looking into the past.

13.7 million years ago things were a lot closer

Quite possibly even contiguous.

and didn't reach their present speed, or I should say their "apparent speed" until toward the end of the inflationary epoch.

If the current model of cosmic evolution is correct, yes, that is true.

And now: just what was the point of all that?

Originally posted by mbkennel

Originally posted by AlphaOphiuchi
Tesla disagreed with Einstein on relativity too.

Experiment agrees with Einstein.

Experiments? Tesla was an engineer. Pretty sure he had plenty of experiments validating his ideas as well

www.forbes.com...

Just one possible link from today.
I will be astounded if this comes clean in the wash. Would certainly mix things up.

reply to post by Doom_Gloom


This still does not change the fact that space-time is curved and that c still remains the constant speed of light. Just because other things move faster than light does not make c wrong. Light still moves at c. This does open the door that maybe we could move through space faster than the speed of light without warping space-time. Still too early to tell.

Even if you could accelerate past the speed of light, the light reflecting off of you would still be stuck at no greater than c. The light directly in front of you would probably compress and slide off the side like some kind of light wave boom akin to a sonic boom.

We will not know for sure until the experiment is reproduced by other scientists at a different lab. Even the guys that made the discovery are not sure about their findings. We shall see.

I have never seen so many clueless people discussing Einstein's theory in one thread. Guess its a sign of interest, which is a positive moment.

a reply to: libertytoall

The speed of light IS mostly constant. Read up on stock market high frequency trading where transactions are literally based on the FACT speed of light is constant and trading differences occur is micro second latencies between two points.
Also yes the speed of light can change, but only in very exotic conditions or extreme gravity like near or in black holes. Physicist Lene Hau at Harvard slowed the speed of light to 38mph using sodium vapor, lasers and high powered electromagnets.

Read some more, you don't really understand the concept yet.

a reply to: richapau
The so-called slowing down of light isn't really what you think it is. There's only an apparent slowing down of light, caused by the delay between absorption and re-emission of photons by atoms. In-between the atoms, light moves at its normal speed.

~~~

The key to understanding the whole thing discussed in this thread is that relative velocity of the observer with respect to photons doesn't affect the measured speed of the photons. Rather, time dilation is involved. The faster the observer is moving, the slower his clock is running. Timeflow rate changes, the light's speed remains constant.

a reply to: libertytoall

The "speed of light in a vacuum" is actually a mathematical construction describing an asymptotic energy curve that, in effect, defines the difference between mass and energy. It allows you to plot points in four dimensional space-time. Did that clear things up for you?

Simpler language: it is not a speed, it is a mathematical constant. It determines what information is accessible at a particular point in space-time.

Erm, don't let the word "speed" confuse you. Just accept that when you use "c" in an equation, all the units will cancel out with other units to give you the answer you are looking for.