Measurements as a function of time become easier to do by film.
Or maybe it's a function of time and not space.
Instead, the signal is studied as a function of time.
Did Einstein really mean to state that truth was a function of time?
"How long it takes to get to the entire force will be a function of time and opportunity."
These variables are only functions of position and time, which means that some information is lost.
Distance may also be measured as a function of time.
Here is defined as a function of time between two readings.
The contact rate itself may be a function of time.
See also position as function of time in a straight escape orbit.