Defining and Derived Parameters
| Parameter | Symbol |
|---|---|
| Semi-major axis | a |
| Reciprocal of flattening | 1/f |
From a and f it is possible to derive the semi-minor axis b, first eccentricity e and second eccentricity e′ of the ellipsoid
| Parameter | Value |
|---|---|
| semi-minor axis | b = a(1 − f) |
| First eccentricity squared | e2 = 1 − b2/a2 = 2f − f2 |
| Second eccentricity squared | e′2 = a2/b2 − 1 = f(2 − f)/(1 − f)2 |
Read more about this topic: Geodetic Datum
Famous quotes containing the words defining, derived and/or parameters:
“The industrial world would be a more peaceful place if workers were called in as collaborators in the process of establishing standards and defining shop practices, matters which surely affect their interests and well-being fully as much as they affect those of employers and consumers.”
—Mary Barnett Gilson (1877–?)
“Jesus wept; Voltaire smiled. From that divine tear and from that human smile is derived the grace of present civilization.”
—Victor Hugo (1802–1885)
“What our children have to fear is not the cars on the highways of tomorrow but our own pleasure in calculating the most elegant parameters of their deaths.”
—J.G. (James Graham)