Re: The Present.
- From: "Sorcerer" <Headmaster@xxxxxxxxxxxxxxxxxx>
- Date: Fri, 23 Jun 2006 22:04:43 GMT
<Yawn....>
Androcles
"Len Gaasenbeek" <gaasbeek@xxxxxxxxxx> wrote in message
news:MI2dnWyC-7XozgHZnZ2dnUVZ_v2dnZ2d@xxxxxxxxxxxxxxxxxxxxxxx
| THE PRESENT
|
| I think we all agree that we live in the present, since it is impossible
for
| any of us to live in the past or live in the future. So what exactly is
the
| present?
|
| The present is the point in time where the past ends and the future
begins.
| Whereas the past and the future are both infinitely long, the present is
of
| infinitely short duration. This is the case because we can envision what
| the 'past present' was like at any point of time before the 'current
present
| '. Similarly, we can imagine what the 'future present' might be like at
any
| point of time beyond the 'current present'.
|
| Now if person A is holding hands with person B, it is obvious that the
| present is the same point in time for both A and B. It is also clear that
| both A and B are aging at the same rate, as per Greenwich Mean Time used
as
| a basis to calculate the present time throughout the world (or universe).
|
| That is to say, if the Greenwich time is lets say 2 o-clock p.m., it is
the
| same time all over the world, i.e. 2 p.m. Even if A lives in Toronto and
B
| lives at a planet one light-hour away, they both find themselves at the
same
| point in time at any given point in time, that is to say they both live in
| the same present and age at the same rate.
|
| Now if A looks at B's clock, it will appear to run exactly one hour slow
to
| his clock. Yet when B looks at A's clock, it also will appear to run one
| hour slow to his clock. This is the case because it takes A's clock image
| one hour to reach B and B's clock image one hour to reach A, because it
| takes the light image of the clocks that long to travel the distance
between
| A and B.
|
| It follows from the above that an 'observed image' is not reality as it is
| always older than its present 'actual image', by the length of time it
took
| for the image to reach the observer.
|
| For example, in the case when A lives one light-hour away from B, A may
| observe B to be perfectly healthy, whereas in reality someone murdered him
h
| alf an hour ago.
|
| In the case where A and B travel away from each other at a constant
| velocity, A will always observe B where he used to be at some time in the
| past, while travelling at an observed speed which is slower than his
actual
| speed. Similarly B will observe A as he looked some time ago and where he
| was located some time ago.
|
| The above concept can become confusing when we speak of the time at which
| the observer makes the observation (which is the present), as compared to
| 'the observed time' or age of the observed person.
|
| For example, if A lives one light-hour away from B, A will observe B as he
| looked one hour ago. Now the time at which A makes the observation could
| also be called 'the observed time', as compared to the observed time of
B's
| image as seen by A. (And vice versa)
|
| So to be clear we really should differentiate between 'the observer's
time'
| which is the 'real' or 'actual' time, and 'the observed time' of the
| observed object, which is some time in the past.
|
| Next let us suppose that at time zero, B starts to move away from A at a
| speed of 1/4 c. What will A see?
|
| At any future point in time, A will observe B at an 'observed distance'
| where B used to be a quarter of an hour ago. Similarly B will be
traveling
| at an 'observed speed' which is less than his 'actual speed', and B will
| appear to be of an 'observed age' which is less than his real or 'actual
age
| '.
|
| Or to put it in mathematical form:
| The observed distance traveled = (tvc) / (v+c)
| The observed speed = (vc) / (v+c)
| The observed age = (tc) / (v+c)
| The observed aging rate = c / (v+c)
| Where:
| t = the elapsed time since the observed object left the observer.
| v = the actual speed of the observed object.
| c = the speed of light.
|
| For further details see the second of my 'Selected Papers' titled:
| 'Frames of Reference' at web-site: http://www2.rideau.net/gaasbeek
|
| Since it is generally accepted that electromagnetic radiation travels at c
| in a vacuum, the gravitational attraction between two moving bodies is
also
| a function of their observed, rather than their actual location.
|
| In other words, two bodies that pass each other will experience an
| attractive gravitational force which depends on where each body observes
| the other to be, rather than where they actually are at a given point in
| time. Not only will the magnitude of the attraction be different than
| expected, but its direction will different too.
|
| This, among other things, explains why some space-crafts are experiencing
an
| unexplained change in their velocity, the further away they move from
earth.
|
| Enjoy, Len. June 23, 2006.
|
|
|
|
|
|
.
- References:
- The Present.
- From: Len Gaasenbeek
- The Present.
- Prev by Date: Re: The Present.
- Next by Date: Re: New Crackpot Alert
- Previous by thread: Re: The Present.
- Next by thread: Re: The Present.
- Index(es):
Relevant Pages
|
