It was partially obtained by linearizing a similar equation in derivatives with respect to time. It mistakenly predicts that g-factor to be exactly 2(*), and is similar to the Rarita-Schwinger equation.  Like the Klein-Gordon equation, it is relativistic, and its four solutions predict the existence of antiparticles and spin. For ten points, identify this equation which describes the relativistic 
It was partially obtained by linearizing a similar equation in derivatives with respect to time. It mistakenly predicts that g-factor to be exactly 2(*), and is similar to the Rarita-Schwinger equation.  Like the Klein-Gordon equation, it is relativistic, and its four solutions predict the existence of antiparticles and spin. For ten points, identify this equation which describes the relativistic dynamics of spin ½ particles.
It was partially obtained by linearizing a similar equation in derivatives with respect to time.
Dirac equation