- #1

Kashmir

- 404

- 68

**Hartle,**

*gravity*

pg 34

" An observer in a inertial frame can construct a clock that measures the time t"

pg 34

" An observer in a inertial frame can construct a clock that measures the time t

*****)Is time something else that exists irrespective of clocks? What we do is just that we measure it?

*Pg 35*

" ...It's a central assumption of Newtonian mechanics that there is a single notion of time for all the inertial observers"

" ...It's a central assumption of Newtonian mechanics that there is a single notion of time for all the inertial observers"

What does the above sentence exactly mean?

Does it mean that whatever time is, it's same for all inertial frames? So if I take similarly made contraptions that serve as clocks, to every inertial frame,they would all tick at same rate with respect to one another?

What about non inertial frames? Why were non inertial frames excluded from

*"...that there is a single notion of time for all the inertial observers".*