Speaker
Prof.
Richard Marchand
Description
Historically the equation of time ET, giving the difference between the solar mean time and true solar time, has been useful to improve estimates of latitudes. Today with GPS accurate positioning systems, and with accurate atomic clocks, the equation of time is seldom of practical use. It is nonetheless of interest from a basic physics standpoint because of its connection with Earth orbital properties responsible for the difference between the mean solar time, and actual solar time. This presentation will explain the equation of time first using a phenomenological approach, and then, more rigorously mathematically.
| Keyword-1 | Equation of time |
|---|---|
| Keyword-2 | Mean and actual solar time |
| Keyword-3 | Earth orbital properties |
Author
Prof.
Richard Marchand