Ask a physicist anything. (3)

[AV1611VET]

What secret ingredients go into Colonel Sander's recipe?

 

[Cabal]

What secret ingredients go into Colonel Sander's recipe?

Chicken.

I was certainly surprised.

 

[gipsy]

Something I'm thinking about since I read this fascinating story Record-breaking galaxy found at the edge of the Universe | Bad Astronomy | Discover Magazine

If we see now an object which is 13.1 billion LY away, this means that the light of it was sent out 13.1 billion years ago. Does this then mean that the relative speed between us and this galaxy is almost c?

 

[KIYX]

Magnets, how do they work?

 

[tanzanos]

What secret ingredients go into Colonel Sander's recipe?

http://www.youtube.com/watch?v=SSnYFsNo2zA

 

[tanzanos]

Something I'm thinking about since I read this fascinating story Record-breaking galaxy found at the edge of the Universe | Bad Astronomy | Discover Magazine

If we see now an object which is 13.1 billion LY away, this means that the light of it was sent out 13.1 billion years ago. Does this then mean that the relative speed between us and this galaxy is almost c?

No. The relative speed between us and that galaxy has nothing to do with C. C is relative but cannot exceed the barrier of its set speed. Only the frequency can change but not the speed. We can however see if that galaxy is moving away from us by the red or blue shift (doppler effect) of its emitted light.

 

[Wiccan_Child]

What secret ingredients go into Colonel Sander's recipe?

That's a trade secret between myself and the good Colonel, but I have it on good authority that the modern company no longer uses the original recipe - except as a gimmick

Something I'm thinking about since I read this fascinating story Record-breaking galaxy found at the edge of the Universe | Bad Astronomy | Discover Magazine

If we see now an object which is 13.1 billion LY away, this means that the light of it was sent out 13.1 billion years ago. Does this then mean that the relative speed between us and this galaxy is almost c?

13.1 billion is pretty far away for a galaxy, and pretty early, but it fits the time scale of the first stellar births. I wouldn't say it's moving at c, but pretty fast nonetheless. If only I could remember that darn formula...

Magnets, how do they work?

With the power of CP!

No. The relative speed between us and that galaxy has nothing to do with C. C is relative but cannot exceed the barrier of its set speed. Only the frequency can change but not the speed. We can however see if that galaxy is moving away from us by the red or blue shift (doppler effect) of its emitted light.

I think he meant that, because distant objects recede from us faster than closer objects, this excessively distant galaxy might be approaching lightspeed (as distance tends to infinity, I'd imagine velocity would tend to c).

 

[gipsy]

No. The relative speed between us and that galaxy has nothing to do with C. C is relative but cannot exceed the barrier of its set speed. Only the frequency can change but not the speed. We can however see if that galaxy is moving away from us by the red or blue shift (doppler effect) of its emitted light.

13.1 billion is pretty far away for a galaxy, and pretty early, but it fits the time scale of the first stellar births. I wouldn't say it's moving at c, but pretty fast nonetheless. If only I could remember that darn formula...


I think he meant that, because distant objects recede from us faster than closer objects, this excessively distant galaxy might be approaching lightspeed (as distance tends to infinity, I'd imagine velocity would tend to c).

Thanks for the answers, but I still have difficulties understanding and I'm not sure if I can articulate correctly whet I'm thinking.
Anyhow I'll try:

If this galaxy is really 13.1 BY old it means it was created only a few 100 MY after the BB, so the place where somewhen our earth will be and the place of this galaxy coould only have been apart some million LY. Now (OK, 13.1 BY ago) the light emits of this galaxy and 13.1 BY later we see it. So light and time have travelled 13.1 BY. Does this mean that the galaxy has also moved 13.1 billion LY in this time?
Or, otherwise asked, how old is the light we now see of this galaxy?
I hope my thinking is somehow understandable

 

[tanzanos]

Thanks for the answers, but I still have difficulties understanding and I'm not sure if I can articulate correctly whet I'm thinking.
Anyhow I'll try:

If this galaxy is really 13.1 BY old it means it was created only a few 100 MY after the BB, so the place where somewhen our earth will be and the place of this galaxy coould only have been apart some million LY. Now (OK, 13.1 BY ago) the light emits of this galaxy and 13.1 BY later we see it. So light and time have travelled 13.1 BY. Does this mean that the galaxy has also moved 13.1 billion LY in this time?
Or, otherwise asked, how old is the light we now see of this galaxy?
I hope my thinking is somehow understandable

The light you see from this galaxy is 13.1 billion years old.
First you have to understand that space and time are one and the same thing. No space means no time and vice versa. Time is change and change cannot take place without movement. So basically what we see when we look at ANYTHING is we are seeing the past be it a few milliseconds to billions of years old. We cannot see the present. When you look at the sun you are seeing it as it was 8 minutes ago. The moon 1 second ago etc.
The galaxy could not have moved 13.1 billion light years since in order for it to have done so it would require it to have travelled at C from the onset. Thus we have to take into consideration Acceleration and the time it will take for the galaxy to reach relativistic speeds. Also that the universe is expanding and thus we are moving further apart from each other.

If you really want answers then a good site to visit is Physorg.com

 

[BrianOnEarth]

Magnets, how do they work?

Reluctantly.

 

[Steffenfield]

Under controlled variables, even though this might not be possible, what method(s) would produce the greatest chance of success in killing something only to bring it back to life say two minutes later?

Thanks!

Please don't report me to the mods. *lol*

 

[Delphiki]

Under controlled variables, even though this might not be possible, what method(s) would produce the greatest chance of success in killing something only to bring it back to life say two minutes later?

Thanks!

Please don't report me to the mods. *lol*

Pentagon: Zombie Pigs First, Then Hibernating Soldiers | Danger Room | Wired.com


lol Zombie pigs.

 

[Steffenfield]

Pentagon: Zombie Pigs First, Then Hibernating Soldiers | Danger Room | Wired.com


lol Zombie pigs.

Wow! That was an awesome read! Thanks Delphiki!!!

But no, I want actual death not some type of suspended animation.

 

[tanzanos]

Are magnets ANTI GAY? After all; They only attract each other when they are opposites

 

[Wiccan_Child]

Are magnets ANTI GAY? After all; They only attract each other when they are opposites

Nah, they're bisexual: stroke them enough and they go whichever way you want them to

 

[Wiccan_Child]

Wow! That was an awesome read! Thanks Delphiki!!!

But no, I want actual death not some type of suspended animation.

Well, that depends on your definition of death I think brain death is as good a definition as any, and I don't think we can bring people back from that. Clinical death is just Hollywood death in my books!

 

[AV1611VET]

Under controlled variables, even though this might not be possible, what method(s) would produce the greatest chance of success in killing something only to bring it back to life say two minutes later?

Two minutes???

I can do it after two years!

-- I get accused of bringing things back to life here all the time!

 

[tanzanos]

Two minutes???

I can do it after two years!

-- I get accused of bringing things back to life here all the time!

All hail the mighty Guru AV

 

[Steffenfield]

Okay gentlemen, here's a question that most will find completely horrible.

What might this be?

And yeah, this one I have absolutely no clue on.

The picture is much too small and I don't even have an honest guess as to what this could possibly be.

Thanks!

 

[Tinker Grey]

• A black plastic mat lying on white surface with regularly punched holes
• A heat sink (on a white surface)
• The tread of a particular kind of athletic shoe
• Who knows?