|
|
|
|
|
|
by mcny
918 days ago
|
|
|
My mind blown moment back in middle school was the example of a ballerina spinning in the back of a flat bed truck going round and round on a race track. It is obvious to anyone here I guess but to my child mind, this was a revelation.
The fact is
the speed at which the ballerina spins in her own dance
has nothing to do with the speed at which the truck goes around the track means.
Similarly, Earth's day of 24 hours and 365 days (I guess 365.25 something) a year are unrelated. Back to the topic,
I think it is useless to try to square the circle of
a scientific time measurement goal
while trying to guarantee that a day has 24 hours
while also trying to guarantee a year has integer number of days. We can try to say that we have defined a meter as something or a kilogram as something and pretend they are not arbitrary
but how can any self-respecting physicist / astronomer pretend that our concept of time is anything but arbitrary? |
|
|