Tomato, tomatoe. Time is a not a physical anything.
A quantity is measurable. I think that makes
the measure of it, at least, 'physical' (using your venacular?)
dad said:
To refer to something in a way that pictures a truth is OK.
I can live with that.
And the scientific process isn't really concerned with posited 'truths'. It
tests posits (as hypotheses) and seeks results .. that's all.
dad said:
Because man does not know if there even is time as we thik of it in the far universe. When they include time in their formulas and math, and size and distance calculations...they are dreaming in technicolor. Doing so is blind faith only.
The 'time' included in the math descriptions in Physics, only refers to
its measure as per the Wiki definition I provided. That's as far as it goes. Science uses this measurable, physical quantity definition because its a useful way of achieving the objectivity goals of 'doing science'.
What time 'is' or 'isn't', is a
philosophical matter, which makes it of
no concern in science. One can adopt a philosophical position on it, or not .. and this doesn't affect what the scientific process demands of a scientist whilst doing science.
I think I understand the issue you've raised in your OP, and I think its a fair one, (any particular added mind-dependent reality bits-and-pieces we have (like your 'truth pictures', etc), are really just personal 'add-ons' at the end of the day).
dad said:
That must be shown, not just spoken into being.
Fair enough.
Of course
physical measurements of something defined as being
a physical quantity can be executed remotely from Earth's surface (by using telescopes for accurately measuring orbits of remote bodies, etc).
dad said:
It probably doesn't concern itself with such high minded nonsense. Probably just does what it was made to do, in the place it finds itself, and has no interest in ungodly alternate creation schemes.
Do ya reckon a virus ponders 'goldy creation schemes'?
dad said:
Baseless religious twaddle then. OK.
No .. its just that religion plays no active role when following the scientific process. There are lots of religious folk doing great science, to y'know. Different modes of thinking.
dad said:
"
Newton's law of universal gravitation states that a particle attracts every other particle in the universe using a
force that is
directly proportional to the product of their masses and
inversely proportional to the square of the distance between them.."
wiki
That is impossible to prove for the distant universe.
Well if one leaves 'proofs' to mathematicians and philosophers, one can measure the orbits of distant planets and find that the results match up with the predictions of Newton's law. By inference, one can gain some confidence that the next time one performs the same measurements elsewhere, the results might also line up with Newton's law predictions. (This process of course, also brings in other Laws commonly referred to as Celestial Mechanics .. eg: Kepler's laws of planetary motion, etc).
dad said:
Just because parts of an atom orbit, for example, does not mean gravity is involved.
It also doesn't mean that gravity is absent, either?
dad said:
Merely having gravity at work on physical bodies does not tell us how big or far away those bodies are! Nor does it tell us if there is anything else at work, that is unseen, and unknown. Etc.
Depends on the specifics of each case. There's lots of other physical laws that make predictions about such aspects. They also tell us which physical quantities can be measured and make predictions of their value(s), so that we can test out those theories/laws, (which then gives us confidence that those theories/laws give accurate predictions). That's what science is/does.