Time is a
very weird idea and concept, it can be (mostly) our enemy (i.e. after a certain time – or number of years we ALL die) or it can be our best friend – or ally
(i.e.
something we may desire or want arrives to us very quickly).
A large
variety of devices have been invented to measure time. The study of these
devices is called horology. An Egyptian device that dates to c.1500 BC, similar
in shape to a bent T-square, measured the passage of time from the shadow cast
by its crossbar on a nonlinear rule.
However time
is truly a complex concept that’s fascinated scientists or normal people since
the beginning of life on earth, in 1905, Albert Einstein determined that the
laws of physics are the same for all non-accelerating observers, and that the
speed of light in a vacuum was independent of the motion of all observers. This
was the theory of special relativity. According to this, time dilation is a
difference in the elapsed time measured by two observers (see how quantum physics
defines the observing action done by different observers), either due to a velocity
difference relative to each other, or by being differently situated relative to
a gravitational field. According to A. Einstein time is an illusion,
"because no observer has knowledge of a distant event, or the simultaneity
of different events, until they are unambiguously in that observer's past. ...
It confuses me, because time seems to be real. Things happen. Depending on our
position and speed, time can appear to move faster or slower to us relative to
others in a different part of space-time. And for astronauts on the
International Space Station, that means they get to age just a tiny bit slower
than people on Earth. That's because of time-dilation effects. The world's most
accurate clock has neatly shown how right Albert Einstein was 100 years ago,
when he proposed that time is a relative concept and the higher you live above
sea level the faster you should age. Einstein's theory of relativity states
that time and space are not as constant as everyday life would suggest.
So
depending on our position and speed, time can appear to move faster or slower
to us relative to others in a different part of space-time. And for astronauts
on the International Space Station, that means they get to age just a tiny bit
slower than people on Earth. That's because of time-dilation effects. In fact when
traveling at speeds near the speed of light special relativity says that time
is dilated. Thus relative to another inertial frame (where perhaps a stationary
twin sits) time for the moving twin is slowing down. Hence the stationary twin
is aging faster. Albert Einstein, in his theory of special relativity, determined
that the laws of physics are the same for all non-accelerating observers, and
he showed that the speed of light within a vacuum is the same no matter the
speed at which an observer travels. The "rebels" who fight the Big
Bang theory are mostly attempting to grapple with the concept of time. They are
philosophers as much as cosmologists, unsatisfied with the Big Bang,
unimpressed with string theory and unconvinced of the multiverse. ...
"People are sure time is there, but they can't get hold of it.
Quantum
physics may have just proven that there is an afterlife. Scientist Robert Lanza
claims that the theory of biocentrism teaches that death as we know it is an
illusion created by our consciousness. Professor Robert Lanza claims that life
creates the universe, and not the other way around.
In very
simple words, finally time is not a dimension; the theory of special relativity
merely treats any one clock-time as a dimension of an abstract construct called
Minkowski space. According to Minkowski space is NOT
the affine space you live in with an added fourth dimension. But let me spend
few words on what’s called the twin paradox is a thought experiment in special
relativity involving identical twins, one of whom makes a journey into space in
a high-speed rocket and returns home to find that the twin who remained on
Earth has aged more.
Time dilation
is very simple phenomenon. Time dilation occurs because the speed of light is
same for all observers in same media. So the rate of time experienced by the
observer changes with respect to object moving near to speed of light because
two events in spacetime having different time origin with respect to each
other.
I remember
an interview – don’t know to whom – when the question was: Would you like to be
immortal? The answer was both very intelligent and fascinated me, in fact the interviewee
said that if he knew to be immortal, what would be the point to get out of bed
every morning, have plans to do something or spend any time with others? He
stated that it’s the knowledge that our time here on earth is what made
humanity to make all of its progress. Populate this planet, create communities
that behave just like living organisms, when I add to this idea that we are all
interconnected, we all are part of each other and began with the Big bang, I
really cannot say that I’m not interested in the latest quantum studies and
discoveries that our humanity has been doing, that truly show our progress in
controlling our lives and the planet we have been living on.
As always I
ask to please show your appreciation for my posts here (884) with a small
donation.
- https://www.amnh.org/exhibitions/einstein/time/
- https://www.quora.com/Is-time-the-only-true-unit-of-measurement
- https://www.scientificamerican.com/article/splitting-time-from-space/
- https://www.space.com/29859-the-illusion-of-time.html
- http://www.einstein-online.info/elementary/specialRT/relativity_space_time
- https://en.wikipedia.org/wiki/Time_dilation
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