Epiphany, you say: "the calculation is easier than that. Distance is Velocity/Time, so with a light year, the distance = (1 year x 5.88 x 10^12 miles/year). The year terms cancel out and you are left with a distance (miles in this case)."
"
Distance is Velocity/Time" is not correct, because it rearranges to
Velocity =
Distance x Time. Velocity is "miles/hour" or
Distance / Time.
You then state "
so with a light year . . . (1 year x 5.88 x 10^12 miles/year".
Why do you say 1 year x 5.88 etc.? It is obvious that year/year cancels out, but in your statement you are saying
1 year (time) x
(number) x
miles per year cancels out. You are just multiplying and dividing by year and saying they cancel out when you have just made it so. There is no equation there.
(1 year x 5.88 x 10^12 miles/year) says a
light year is 5.88 x 10^12 miles.
How do you get this? Is one of these "year"s a light year? Why do you say "so with a light year"?
"so with a light year, the distance = (1 year x 5.88 x 10^12 miles/year)"
All this says is a light year is 5.88 x 10^12 miles per year. We know that.
There is no equation there, 'except' cancelling out the units.
I really do not understand this at all. Please explain.
Cat