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(NBC News)   Physicists say speed of light may not be constant, unlike your wife's nagging   (science.nbcnews.com) divider line 13
    More: Interesting, speed of light, SLAC National Accelerator Laboratory, virtual particles, Antiparticle, particles, fine structures, faster than light, square roots  
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5977 clicks; posted to Geek » on 28 Apr 2013 at 6:11 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-04-28 06:28:36 PM
2 votes:
People who misuse this information to ignorantly espouse young-earth creationism in 5... 4... 3...
2013-04-28 03:29:59 PM
2 votes:
Of course it isn't constant and that's been know for quite some time, just like the speed of sound isn't constant. It depends on the medium it's passing through.
There is still an upper limit....so far.

The wifes nagging on the other hand......
2013-04-29 08:21:51 AM
1 votes:
Ok, so besides all the word problems that keep popping up in this thread, i would actually like to talk about what is wrong with this article:

The tell is right in the second sentance of the article

FTFA: But some scientists are exploring the possibility that this cosmic speed limit changes, a consequence of the nature of the vacuum of space.

Lets bold and point out why the rest of this article should not be taken seriously:


1.)  But some scientists are exploring the possibility that this cosmic speed limit changes, a consequence of the nature of the vacuum of space.

Some Scientists - first indicator, they do not tell us which ones, where, how many, or what sort of scientists they are. Anyone with a STEM degree could be considered a scientist as well as anyone who graduated with a metephysics degree from the pat robertson college. Christian "Scientists" have been challenging this claim for years in order to prove young earth creation. By deliberately being vague they are creating a canvas cof conjecture for their entire article.

2.) But some scientists are exploring the possibility that this cosmic speed limit changes, a consequence of the nature of the vacuum of space.

Possibility - This could simply mean that a group of scientists are trying to reformulate the light speed theory. Understanding the scientific method means that is the job of the scientific community to not just take a theory at face value on it's first conception and the challenge of the community is to try and prove the theory wrong. So by it's own design, there will ALWAYS be scientists who challenge certain theories because the system is not designed to just accept someone's theory on faith alone.

The rest of the article is just fluff at this point, and nothing to really report on... There's always going to be a scientist that challenges current theories for a couple of different reasons. One is simply that it is the responsibility of the scientific community to make these challenges as set by the scientific method. Second, is that there is always going to be some scientists that wants to make a name for themselves and become famous...
2013-04-29 02:58:29 AM
1 votes:
bbsimg.ngfiles.com
2013-04-28 11:16:44 PM
1 votes:

Quantum Apostrophe: I mean people went to the South Pole, doesn't mean we'll live there.


You are aware that people live down there, right?
2013-04-28 10:53:38 PM
1 votes:

Uzzah: Lt. Cheese Weasel: //never getting off this rock.  Face it.

[history.nasa.gov image 425x315]
What a person facing the fact that we're never getting off this rock might look like.


No shiate. Maybe "never going to another star system and coming back to talk to the people you left behind about it", but getting off this rock is very doable.
2013-04-28 10:40:33 PM
1 votes:

Lt. Cheese Weasel: //never getting off this rock.  Face it.


history.nasa.gov
What a person facing the fact that we're never getting off this rock might look like.
2013-04-28 10:34:40 PM
1 votes:
jimhillmedia.com
/the speed is more what you'd call "a guideline" than actual rules
//savvy?
2013-04-28 09:06:01 PM
1 votes:
3.bp.blogspot.com
2013-04-28 08:01:32 PM
1 votes:
Disclaimer:  I didnt bother reading the article, so I dont know what they were referencing.

Some physicists are playing with the idea that light is simply moving at "max speed", but that "max speed" isnt necessarily a constant.  They've seen some funny variations in recent years to physics experiments.. so they're trying to work out if its measuring errors or if the universe is actually just a bit more variable than we previously thought.
2013-04-28 07:32:04 PM
1 votes:

Cpl.D: Answer? At the speed of light, still.


But redder.
2013-04-28 06:48:20 PM
1 votes:

cretinbob: Of course it isn't constant and that's been know for quite some time, just like the speed of sound isn't constant. It depends on the medium it's passing through.
There is still an upper limit....so far.


You should read TFA: it's about variations in the speed of light in the cosmic vacuum.
2013-04-28 06:36:00 PM
1 votes:

SpdrJay: So if we're on a spaceship going the speed of light and you're standing in front of me and I shoot you, the bullet will never get there?


You can only approach the speed of light, never achieve it.  Because you are mass.  The closer you get to the speed of light, the more energy it takes to get more speed.

A funner mental exercise:  Let's say you have two space ships.  Both take off at the same time.  One is going quarter the speed of light, the other three quarters the speed of light.  The slower ship turns on its headlights.  At what speed does the faster ship see the light passing it?

Answer?  At the speed of light, still.
 
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