Faster than light Galaxies

Discussion in 'General Science' started by Black-Bird, Feb 17, 2011.

  1. Black-Bird

    Thread Starter New Member

    Jan 26, 2011
    23
    0
  2. Papabravo

    Expert

    Feb 24, 2006
    10,138
    1,789
    So now if you see it on YouTube it must be true. Puhleez you've been pu'ked my friend.
     
  3. Black-Bird

    Thread Starter New Member

    Jan 26, 2011
    23
    0
    so if it's on YouTube it's inevitably incorrect ? i see an argument from ignorance here :rolleyes:
     
  4. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
    1,758
    98
    YouTube is just a place where anyone can post videos of pretty much anything. They even have "working" overunity devices, doesn't make it true or factual though.
     
  5. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,685
    900
    So do I. No one has suggested that everything on YouTube is incorrect or a hoax.

    Edit: Here's a link to calculation of the Doppler shift: http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/reldop3.html#c3

    For z=4.25, velocity is just 0.92c.

    John
     
    Last edited: Feb 17, 2011
  6. magnet18

    Senior Member

    Dec 22, 2010
    1,232
    124
    Ive always wondered about this, what if there were a galaxy moving towards us at .9c and we launched a rocket at it which accelerated to .11c, what happens?
     
  7. Papabravo

    Expert

    Feb 24, 2006
    10,138
    1,789
    I did not say that, and did not imply that either explicitly or implicitly. Extraordinary claims require extraordinary proofs. I think most will agree that video falls a bit short of that mark.
     
  8. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,907
    2,167
    What is the point of reference? There are "things" that can happen faster than the speed of light, they just can't transmit information.

    http://www.soc.iastate.edu/sapp/phil_sci_lecture04.html
     
  9. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
  10. Papabravo

    Expert

    Feb 24, 2006
    10,138
    1,789
    Yeah. It gets really hard to accelerate a mass that is increasing at a prodigious rate to achieve Warp 1. Now if you could just make your mass imaginary then you'd have to try missing things since you could not go slower than Warp 1.
     
  11. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,907
    2,167
    Last edited: Feb 17, 2011
  12. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    Or it could be something they come up with just to be famous
     
  13. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Dr. Emilio Lizardo begs to differ with you, sir (ref: "Buckaroo Banzai").
     
    Last edited: Feb 18, 2011
  14. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,907
    2,167
    Dr. Emilio Lizardo / Lord John Whorfin
     
  15. Black-Bird

    Thread Starter New Member

    Jan 26, 2011
    23
    0
    good contribution people ? I wounder if that guy who made the video is trying hard to explain a physical phenomenon or just playing with our heads ? it's strange that he is a scientist
     
  16. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,685
    900
    He is fundamentally wrong, particularly with respect to calculating z. If you call that a scientist fine. I don't. I call it a fraud/wannabe.

    John
     
  17. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    I remember being intensely curious about speed of light problems when I was in my 20's.

    Take the following problem, you have two space ships approaching earth 180° apart each going ¾ the speed of light. So the differential is 1½ the speed of light, right?

    Not really, the key concept in the Theory of Relativity is speeds are measured by the observer. When I looked up the math and crunched the numbers the closing speed of the space ships as measured by the ships is 7/8 the speed of light (you are still approaching Earth at ¾ the speed of light). In other words, the numbers you get are purely relative to where you measure them. The flow of time is another variable. Having said that a paradox pops out at me, if each ships time is moving slower than the other ships, but will be the same compared to Earth, what are their relative clocks to each other? Made my head hurt it does.

    I've long since forgotten the math, but the concept stuck. No object can approach nor depart your platform (Earth) faster than light as measured from that platform. Two objects measured from Earth is relative to Earth, not each other. Relative speeds depend on where you are, and the answers change accordingly.

    That is why it is called the Theory of Relativity, everything is relative to where you are.
     
    Last edited: Feb 18, 2011
  18. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    Diddo.

    I don't believe anything can travel faster than light.
    Take this for example, if it is faster than light, it is invisible. :D
     
  19. magnet18

    Senior Member

    Dec 22, 2010
    1,232
    124
    So you said that comes out to 7/8c

    what if there are two ships coming together 180° apart at 3/4c?

    what would the speed of one ship be if the other ship was the reference point?
     
  20. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,685
    900
    I think this explains what Bill Marsden was saying:

    John
     
    magnet18 likes this.
Loading...