The Naked Scientists

The Naked Scientists Forum

Author Topic: Does Light age?  (Read 5270 times)

Offline yamo

  • Full Member
  • ***
  • Posts: 78
    • View Profile
Does Light age?
« on: 28/03/2010 17:40:27 »
Does light age?  Does it get older?


 

Offline Soul Surfer

  • Neilep Level Member
  • ******
  • Posts: 3345
  • keep banging the rocks together
    • View Profile
    • ian kimber's web workspace
Does Light age?
« Reply #1 on: 28/03/2010 18:35:46 »
No.   light and all electromagnetic radiation is totally unaware of time because it travels at the velocity of light.
 

Offline yamo

  • Full Member
  • ***
  • Posts: 78
    • View Profile
Does Light age?
« Reply #2 on: 28/03/2010 18:54:56 »
Does it age when it is slowed (bose einstein condensate), or is it still going the speed of light even if the speed of light is much less than c.
 

Offline yor_on

  • Naked Science Forum GOD!
  • *******
  • Posts: 11987
  • Thanked: 4 times
  • (Ah, yes:) *a table is always good to hide under*
    • View Profile
Does Light age?
« Reply #3 on: 28/03/2010 21:26:43 »
Yamo, does the light age more the more light years we know it to come from?
If you think it doesn't, why would it matter to it that we have stopped its 'motion'?

Take a look here for an in depth look at How Do You Stop Light?
 

Offline Ron Hughes

  • Sr. Member
  • ****
  • Posts: 363
    • View Profile
Does Light age?
« Reply #4 on: 02/04/2010 15:49:52 »
Since we have no way to test if the wavelength of light gets longer over great distances we can't answer your question. Currently mainstream says the red shift is due to velocity of receding galaxies. Can they guarantee that? Could it possibly be a combination of both?
 

Offline PhysBang

  • Hero Member
  • *****
  • Posts: 588
  • Thanked: 14 times
    • View Profile
Does Light age?
« Reply #5 on: 02/04/2010 17:16:54 »
If it is a combination of both, then the amount that the wavelength of light changes over great distances must be really, really small. This is because there are a number of different ways to measure how light behaves over large distances and the relationship between expansion and light matches all of them to a great deal of accuracy and other hypotheses do not.
 

Jessica.Amanda

  • Guest
Does Light age?
« Reply #6 on: 02/04/2010 17:55:05 »
No my dear nerd.
Why do you think that light would age?
 

Jessica.Amanda

  • Guest
Does Light age?
« Reply #7 on: 02/04/2010 18:03:02 »
I think you mean to say that time period of existence of photons.
well is that what you meant, isn't it ?
 

The Naked Scientists Forum

Does Light age?
« Reply #7 on: 02/04/2010 18:03:02 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums