Präzisionssonnenuhr • precision sundial • cadran solaire de précision
Präzisions Sonnenuhr Sonnenuhren sundial sundials cadrans solaires zonnewijzers meridiana relojes de sol
Calculation
The following effects are taken
into account in the calculation:
- the elliptical orbit of the earth
- the inclination of the rotation axis
of the earth to the ecliptic
- the precession of the earth axis
- the earth as a ellipsoid
- the diffraction of the light rays
in the atmosphere
- calculation of the deepest shadow
of the hand on the dial depending
on the distance
ecliptic
sun
earth
aphelion
perihelion
