Gravity of Earth
Videos
The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation and the centrifugal force. It is a vector quantity, whose direction co
Earth's gravity measured by NASA GRACE mission, showing deviations from the theoretical gravity of an idealized, smooth Earth ellipsoid. The deviations toward stronger gravity are colored red; deviations toward weaker gravity are colored blue.
Earth's radial density distribution according to the Preliminary Reference Earth Model (PREM).
A plumb bob determines the local vertical direction
Spheroid
Videos
A spheroid, also known as an ellipsoid of revolution or rotational ellipsoid, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with tw
A rugby ball