There are 2 ways in which we can conceive of Time.
There are two distinct views on the meaning of the word time.
One view is that time is part of the fundamental structure of the universe, a dimension in which events occur in sequence, and time itself is something that can be measured. This is the realist's view, to which Sir Isaac Newton subscribed, and hence is sometimes referred to as Newtonian time.
I don't accept this view, despite the fact that we are all Newtonian in outlook. We go to work, keep appointments, eat, plan etc all according to Newtonian time. simply because there is no other way to structure our lives.
An opposing view is that time is part of the fundamental intellectual structure (together with space and number) within which sentient beings sequence events, quantify the duration of events and the intervals between them, and compare the motions of objects.
In this second view, time does not refer to any kind of entity that "flows", that objects "move through", or that is a "container" for events. This view is in the tradition of Gottfried Leibniz and Immanuel Kant, in which time, rather than being an objective thing to be measured, is part of the measuring system used by humans.
I think we all agree that this is the correct (or best fit) for a definition of Time. (EW may not agree). If we agree on this then a working definition for this thread would be that Time is not an Entity, but a measurement.
Do we accept this ?? Tormod ?
Now we can say that time is a measurement of change, relying on the second definition in the Wiki.
Change .. of course .. is anything ... but what we need to measure it is 'Periodic Change'. The sun moving across the sky, or the seasons, or phases of the moon.
1) What is "change"? How do you define it?
2) How do we measure this change? Where does it happen?
Tormod ... I am sure you know this as well, probably better, than me. Our current most accurate measure of change is the perturbations of electrons around the Cesium atom.
3) If change is measured by time, what is the equation that shows it? (and how much change is measured in how much time)
The second is the 'earthly' working minimum of change. Physically the second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom. ... LOL
Hyperfine is a Quantum term. The equations can be found here:
Hyperfine structure - (click here)
4) What is time? If your answer to 4) is "time is the measure of change", then your logic is circular.
As I have answered the first three, the fourth becomes rather irrelevant don't you think. Personally I feel that Time is a human perception. So far as I know, no other species keeps appointments. All other species follow a biological clock. eg: we can track other animals, we recognise footprints .. no other species can do this .. a lion can track by smell, or direct sight ... only we can posit a relationship between an irregular disturbance in the mud or dirt or sand and picture a wildebeest, and his direction of travel, in our minds. "Him bigfella from yesterdays Sun, went this way" ... LOL.
This requires a large memory .. When we access memory, in comparison to a current moment in 'reality', we interpret this as a change, or event, from a past time.
Only Homosapiens has found it necessary to record the past, posit the future, and recognise the present as the imaginary dividing point.
My initial post (and logical argument) was that this imaginary point is no point, due to General Relativity, but that we must necessarily exist across many 'singular moments'. However small the measurement, our bodies consist of many parts in motion in relation to other parts due to infintismal amounts of time dislocation that we perceive as one moment.
Ergo: A moment is imaginary, a human construct ... that in fact different parts of our body would record a different amount of beats of the Cesium clock having elapsed for any given 'Human' instant. The Past, present and Future cohabit ... only the Zygotes separate them ...
Now of course, we are all totally confused, including myself ...... LOL
cool bananas ... Drum