The units measurement are man made, yes, but time does exist, if even just in our experience of our universe. And what exists outside of our experience? Is any of it real at all?
How does gravitational time dilation fit in? If a person on Earth and a person in orbit experience a measured second in the same way, yet the seconds are not equal, doesn't that mean time is something beyond just our way of quantifying it?I honestly don't see where time is outside of my mind.
I am a mortal. I will die one day, and that moment is not before this very instant, but after. I have not died yet, I will die in the future.I'm honestly not trolling.
Simply waiting for someone to prove the existence of time outside of the man made invention that it is.
I don't mind waiting. I've got a book.
But you're applying this notion of time to the transformation of your body. We develop and decay like everything else but that's still just movement. The passage of time during this process is our own application.I am a mortal. I will die one day, and that moment is not before this very instant, but after. I have not died yet, I will die in the future.
The very notion of before and after, past and future requires time to make sense. You talked about the big bang. Did that occur before or after the moment you're reading this?
Time is fundamental. Asking for an equation for time is like asking for an equation for length. It doesn't make any sense. it's just a basic property of the universe. Space (length) and time are fundamentally related, as RA has been trying to say. Time exists, the only "invention" is our arbitrary measurement of it.How about an accepted and understood formula for time. Link?
But what is motion? How do you measure it? Motion can only occur if time exists to allow a referenc from point A to point B. Without time, motion cannot happen much like without a Z axis, three dimensions cannot be achieved.But you're applying this notion of time to the transformation of your body. We develop and decay like everything else but that's still just movement. The passage of time during this process is our own application.
I like this response:True. Though I tend to look at spacetime from a 5th and 6th dimensional perspective.
Check out this cool bit on time distortion:http://casa.colorado.edu/~ajsh/singularity.html#r=1 said:At exactly 1 Schwarzschild radius, the horizon, the Schwarzschild surface. The point of no return.
An observer outside the black hole cannot see us beyond this point - we would appear to take an infinite amount of time to pass through, becoming slower and more redshifted as time goes by. But from our own point of view space and time continue normally.
The small white dot indicates our point of entry through the horizon. Remarkably, the Schwarzschild surface, the red grid, still appears to stand off at some distance ahead of us. The white dot is actually a line which extends from us to the Schwarzschild surface still ahead, though we only ever see it as a dot, not as a line. The dot-line marks the formation of the Schwarzschild bubble (see below), and our entry into that bubble. Persons who fell through the Schwarzschild surface at this precise point before us would lie arrayed along this dot-line. At this instant, as we pass through the horizon into the Schwarzschild bubble, we see all the other persons who passed through this location before us also pass through the horizon into the bubble.
http://en.wikipedia.org/wiki/Special_relativity#How_far_can_one_travel_from_the_Earth.3F said:How far can one travel from the Earth?
Since one can not travel faster than light, one might conclude that a human can never travel further from Earth than 40 light years, if the traveler is active between the age of 20 and 60. One would easily think that a traveler would never be able to reach more than the very few solar systems which exist within the limit of 20-40 light years from the earth. But that would be a mistaken conclusion. Because of time dilation, a hypothetical spaceship can travel thousands of light years during the pilot's 40 active years. If a spaceship could be built that accelerates at a constant 1g, it will after a little less than a year be traveling at almost the speed of light as seen from Earth. Time dilation will increase his life span as seen from the reference system of the Earth, but his lifespan measured by a clock traveling with him will not thereby change. During his journey, people on Earth will experience more time than he does. A 5 year round trip for him will take 6½ Earth years and cover a distance of over 6 light-years. A 20 year round trip for him will land him back on Earth having traveled for 336 Earth years and a distance of 314 light years. A full 40 year trip at 1 g will appear on Earth to last 58,000 years and cover a distance of 55,000 light years. A 40 year trip at 1.1 g will take 148,000 Earth years and cover about 140,000 light years. This same time dilation is why a muon traveling close to c is observed to travel much further than c times its half-life (when at rest).