Standard seconds are defined based on measurable properties of a cesium atom. The historical definition of 1/86400th of a day doesn’t work for science if the duration is inconsistent.
For example the statement:
Earth’s Days Are Getting 2 seconds Longer Every 100,000 Years
becomes self-referencing and loses all meaning without some other reference point.
But does this account for our days getting longer?
Edit: /s
Standard seconds are defined based on measurable properties of a cesium atom. The historical definition of 1/86400th of a day doesn’t work for science if the duration is inconsistent.
For example the statement:
becomes self-referencing and loses all meaning without some other reference point.
“I suppose”.
Boom, now it’s a scientific unit.
This is time relative to earth, and the actual passage of time in the universe that we aim to measure doesn’t care about the Earth’s rotation.