Notices
Results 1 to 6 of 6

Thread: E=MC^2 Help!!

  1. #1 E=MC^2 Help!! 
    Forum Masters Degree SuperNatendo's Avatar
    Join Date
    Dec 2007
    Location
    Nashville, TN USA
    Posts
    505
    I would like to ask everyone who may know something about E=MC^2

    C is the constant right? The Speed of Light?

    If light shone from an object traveling at 1/2 the speed of light is still going just as fast as light emmitted from an object traveling 1/4 the Speed of Light in relation to the other object, the Constant can be given the value of 1, 1 being the rate at which light travels regardles of how fast you are going.

    Ok so now the constant is 1

    So then we have E=M*1^2

    or E=M

    why did einstein add the extra C^2 then if it can simplify further?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Administrator KALSTER's Avatar
    Join Date
    Sep 2007
    Location
    South Africa
    Posts
    8,231
    The constant, C, has units attached as it is a speed.
    C = 300 000 000 m/s (a little less than). The rest of what you are saying is flat-out wrong. :|


    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
    "All people know the same truth. Our lives consist of how we chose to distort it." - Harry Block
    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
    Reply With Quote  
     

  4. #3  
    Forum Masters Degree SuperNatendo's Avatar
    Join Date
    Dec 2007
    Location
    Nashville, TN USA
    Posts
    505
    Quote Originally Posted by KALSTER
    The constant, C, has units attached as it is a speed.
    C = 300 000 000 m/s (a little less than). The rest of what you are saying is flat-out wrong. :|
    But couldnt you just as well say that 300,000,000 m/s = 1 gizmo/s? or better yet 1 m/.0000000001s?

    Just because we try to translate it into miles, meteres, inches, feet etc... over seconds, miliseconds, minutes, hours, years dayse etc...
    doesn't mean it could not be defined as 1 in another unit of measure, or 1m in another unit of time especially giving that the Speed of Light is the universal constant!
    Reply With Quote  
     

  5. #4  
    Forum Masters Degree SuperNatendo's Avatar
    Join Date
    Dec 2007
    Location
    Nashville, TN USA
    Posts
    505
    Basically Energy = Mass no matter the Speed!
    Reply With Quote  
     

  6. #5  
    Forum Sophomore Pikkhaud's Avatar
    Join Date
    Aug 2007
    Location
    Norway
    Posts
    140
    The formula is independent of the system of units. In natural units, the speed of light is defined to equal 1, and the formula expresses an identity: E = m. In the SI system (expressing the ratio E / m in joules per kilogram using the value of c in meters per second):
    E / m = c2 = (299,792,458 m/s)2 = 89,875,517,873,681,764 J/kg (≈9.0 × 1016 joules per kilogram)

    So one gram of mass — approximately the mass of a U.S. dollar bill
    Reply With Quote  
     

  7. #6  
    Forum Masters Degree SuperNatendo's Avatar
    Join Date
    Dec 2007
    Location
    Nashville, TN USA
    Posts
    505
    Okay, Thank You!

    I get it now, for SI, to find the amount of joules of energy you can get from an object of a certain mass, measured in SI, You use the SI standard for the speed of light.

    the natural method would work but is harder for us to comprehend, so that is why C^2 is needed in the equation but both notations are correct in their own units of measure!

    Thank You Again!
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •