Whats the speed of dark ?

[mikewint]

It's getting to technical to keep up....

You ain't even scratched the surface yet. The ancient Egyptian Book of the Dead is a good introduction to Quantum Mechanics where virtual particles come into existence from nowhere and the go out of existence violating all conservation laws BUT it's OK because they do it so quickly the universe does not have time (whatever that is) to notice.
The Universe is not only stranger than you imagine it to be, it is stranger than you CAN imagine

 

[Gnomey]

But all we realy want to know is; is there a colour picture of it!

 

[pbehn]

But all we realy want to know is; is there a colour picture of it!

Of course there is but it was over exposed.

 

[Airframes]

It's a positive negative .....................

 

[mikewint]

This is the latest pic I have-

 

[pbehn]

It's a positive negative .....................

As an English cricket coach frequently said, "I take positives from the negatives".

 

[Wayne Little]

That pic seems to show a lot of nothing in particular that we can use .....

 

[Gnomey]

It's still a good picture of what we are looking for...

 

[Airframes]

But the dark isn't moving - maybe dark is very slow after all.

 

[mikewint]

Motion can only be defined in terms of a single fixed point and since there does not exist any privileged point ALL motion is RELATIVE.
Standing on the ground the Earth appears to be stationary and the sun moves across the sky. From the suns point of view the Earth revolves around it as it remains stationary. From outside the solar system the entire system is moving around the galactic core at 220 km/s RELATIVE to the core which itself is not stationary.
So are we moving through the dark or is the dark moving past us...tis all relative to your POV (Point of View)

 

[herman1rg]

Surely that picture is in the wrong thread?

 

[Bucksnort101]

I've been in the dark since the beginning of this thread, and I got there pretty quickly.

 

[Gnomey]

Trying opening your eyes maybe you'll see a coloured picture...

 

[Marcel]

Motion can only be defined in terms of a single fixed point and since there does not exist any privileged point ALL motion is RELATIVE.
Standing on the ground the Earth appears to be stationary and the sun moves across the sky. From the suns point of view the Earth revolves around it as it remains stationary. From outside the solar system the entire system is moving around the galactic core at 220 km/s RELATIVE to the core which itself is not stationary.
So are we moving through the dark or is the dark moving past us...tis all relative to your POV (Point of View)

And there we finally get to Einstein to solve the puzzle.

 

[Bucksnort101]

If an object travelling at the speed of dark passes through a black hole, does it come out the other side, providing there is an other side, at the speed of light?

My head hurts!

 

[mikewint]

f an object travelling at the speed of dark passes through a black hole, does it come out the other side, providing there is an other side, at the speed of light?

1. Dark is not a physical object therefore cannot have a speed or velocity. Dark is an absence.
2. Passing through is impossible since a black hole is a one way trip once past the event horizon NOTHING exits the hole not even light so there is no other side. Even approaching the hole is a death sentence since the gravitational field would become so intense that tidal forces would rip anything to atoms in a second and then rip apart the atoms themselves.
3. Special relativity demonstrates that in addition to time dilation, shrinkage along the line of flight axis, the object would increase in mass. So approaching the speed of light for any massed object means that more and more energy becomes more and more mass slowing acceleration more and more until you've input an infinite amount of energy and have an infinite mass. No massed object reaches light velocity

 

[herman1rg]

Black hole blasts out 'double burp'

 

[mikewint]

Being that this is an article written for a "Popular" news outlet is it written in a style seriously lacking in exactitude. As previously posted all black holes are surrounded by ACCRETION disks of matter that are being attracted by the gravitational field of the actual Black Hole. The gravitational force experienced by matter in the accretion disk varies with the square of the distance. At the innermost edge of the accretion disk is the EVENT HORIZON. The event horizon marks that point in space where the escape velocity is equal to the speed of light. Above (away from) the horizon the escape velocity is less than the speed of light and below the horizon the escape velocity is greater than the speed of light. Thus once past the event horizon NOTHING escapes the black hole.
Within the accretion disk however escape velocities are less than light speed thus matter and energy can escape. In addition the massive tidal forces near the event horizon are literally tearing matter apart ripping out electrons and tearing protons and neutrons apart as well as causing the matter in the disk to spin around the hole as it spirals into the hole. All of these forces combine to heat the disk and cause it to radiate energy all the way into the gamma-ray band of the EM spectrum.
These so-called "Burps" came NOT from the Hole itself but from the accretion disk surrounding the actual Black Hole

 

[Gnomey]

 

[gumbyk]