Explain the linear approximation of Einsteins field equations and their analogy to the Maxwell Equations.xplain several experiments that have been done to explore this effect as Gravity Probe B.

The analogy of gravitation and electromagnetism has a long history.Explain the linear approximation of Einsteins field equations and their analogy to the Maxwell Equations.  also explain several experiments that have been done to explore this effect as Gravity Probe B. carefully check the available references which have been uploaded below.