What is time??

Discussion in 'Science & Society' started by Shadow1, Feb 5, 2011.

  1. OnlyMe Valued Senior Member

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    Until it is running out!
     
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  3. AlexG Like nailing Jello to a tree Valued Senior Member

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    To quote John Wheeler,

    "Time is what keeps everything from happening all at once. And space is what keeps it from happening to me."
     
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  5. OnlyMe Valued Senior Member

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    Wheeler kinda repurposed the first sentence. I had forgotten the second which when added to the first, I like even better.
     
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  7. hansda Valued Senior Member

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    A mass having angular momentum is not a static-mass relative to space . Our earth is also not static relative to space .
     
  8. hansda Valued Senior Member

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    We are well aware of the equation : c = f * l ; where c is the velocity of light , which is constant , f is the frequency , l is the wavelength and * is the multiplication (into) symbol .



    This equation can be read in a generalised form as :

    c = [frequency] * [distance] .......... (1) .




    The time equation ( speed = distance/time ) can be re-written in terms of c as :

    c = [distance] / [time] .......... (2) .




    Comparing equations (1) and (2) , we can find that time is also related with frequency . This relationship between time and frequency can be expressed mathematically as :


    Mfrequency * Tminimum = 1 ; where Mfrequency is the maximum frequency and Tminimum is accordingly smallest time-period or interval of time .





    THUS TIME ALSO CAN BE SEEN FROM FREQUENCY POINT OF VIEW .
     
  9. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Frequency of what?
    And what does frequency actually mean? Think (if you can) about it.
    Wrong.
     
  10. hansda Valued Senior Member

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    Frequency * time-period = 1 ; where frequency is the number of oscillations or vibrations or revolutions of any mass in one second or in the case of energy-flow : frequency is the number of waves in one second . Time-period is the time taken for the completion of one oscillation/vibration/revolution or one wave .


    Thus , the equation " frequency * time-period = 1 " is true for any frequency . This equation is as true as the equation : " speed = distance / time " .
     
  11. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    And another fail.
    Frequency of WHAT?
    And, as you noted in your over-wordy explanation frequency itself involves time, therefore how can it be used as a base unit to derive time?
     
  12. origin Heading towards oblivion Valued Senior Member

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    Do you really think this means something other than the trivially obvious??

    Lets see this in a real example:
    Say for a 60 Hz example. There are 60 cycles in a second. .

    [60 cycle/ sec.)] * 1/60 sec = 1 cycle

    WOW it works! Who would have thought that by multiplying the the frequency by the time (for one cycle) would equal 1 cycle. It is utterly astounding.

    It has other applications. Like speed! lets try it...
    speed in feet/sec * the time it takes to go 1 foot

    60 mph or 88 ft/sec
    88 ft/sec * 1/88 sec = 1 holey moley it works!?!?!

    This means that time is distance - right?

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  13. hansda Valued Senior Member

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    It is the frequency of the source . For example consider the case of LIGHT . Light originates from its source and travels through the medium of space . Light in its journey through the space may be subjected to the effect of relativity but the source of light remains immune to this effect . Frequency of the source will remain unchanged .
     
  14. hansda Valued Senior Member

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    In fact time is being measured through frequency only . Unit of frequency is rpm . RPM of our earth is one revolution per 24*60 minutes . All the clocks/watches are designed with this rpm value of our earth as reference ( or base ) to indicate time .
     
  15. AlexG Like nailing Jello to a tree Valued Senior Member

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    Still another fail.

    You're trying to use a measurement of time to define time.
     
  16. wlminex Banned Banned

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    . . . I think Wheeler formulated the correct conclusion . . . !

    wlminex
     
  17. origin Heading towards oblivion Valued Senior Member

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    You should quit while you're behind.

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  18. hansda Valued Senior Member

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    See the following site : http://en.wikibooks.org/wiki/Physics_Study_Guide/Basic_Units for a definition of time .


    I quote from this site the definition of time as below :


    Time
    Time is defined as the duration between two events. In the international system of measurement (S.I.) the second (s) is the basic unit of time and it is defined as the time it takes a cesium (Cs) atom to perform 9 192 631 770 complete oscillations. The Earth revolves around its own axis in 86400 seconds with respect to the Sun; this is known as 1 day, and the 86400th part of one day is known as a second.
     
  19. AlexG Like nailing Jello to a tree Valued Senior Member

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    This tells us how we've defined a unit of measurement. It doesn't tell us what time is. It just substitutes one word, 'duration' for another word, 'time'.

    'Time is defined as the time between two events'.
     
  20. origin Heading towards oblivion Valued Senior Member

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    NO, This is not a generalized form at all.

    c ONLY equals [frequency] * [wavelength of that PARTICULAR frequency] Therefore the generlized form is c = [frequency] * [wavelength] for a given photon.

    Not time but a time interval. Big difference.

    Frequency does not define time in the slightest. We arbitrarily asign a time interval of 1 second and count the number of cycles over that time period and call that frequency. Since we know the speed of light is c and we know the frequency we can also determine the length of a wave. All this involves a time interval but says nothing about what time is.
     
  21. hansda Valued Senior Member

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    So time can be defined as :

    " Number of oscillations of cesium (Cs) atom between two events . "

    Or, time can be defined as :

    " Number of revolutions of our earth between two events . "
     
  22. whynot Registered Senior Member

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    IDK! Maybe it has to do with a force created by electro magnetic residue decaying.:shrug:

    Dont even ask how I came across this idea.:bugeye:
     
  23. Me-Ki-Gal Banned Banned

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    That is freaky ! 5 mile force and the 3rd canvas . Your possessed Chi . You might consider Me, being a Five month force splashed on the canvas on the 3rd day. Go Go Gofers. Like Water ? Who said that ?
     

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