Question

Is anything properly uniform in this world and how can you say this?

Answer 1

Probably nothing in truly uniform .Even the motion of the earth around the sun and the moon around the earth have a nearly uniform speed since their orbits are almost circular. The rotation of the earth around its axis is uniform within a few microseconds per day.
Earth:
Max. orbital velocity (km/s) 30.29 Min. orbital velocity (km/s) 29.29
so the speed varies by about 1.5% over a 12 month period fairly uniform but not perfect.even our universe is expanding day by day...So probably nothing in our universe is uniform for ever.

I hope you got the answer 😊