The mass defect can be calculated from his single best known contribution to science, which posits an equivalence between two of its parameters.
One exact solution to a set of equations created by this scientist predicts that rotating bodies would undergo frame dragging. The Kerr and Schwarzchild metrics solve that set of equations without taking into account the cosmological constant, which this scientist believed was his greatest mistake. In Annalen der Physik, this creator of the field equations wrote four Annus Mirabilis papers, two of which were about Brownian motion and the (*) photoelectric effect. The mass defect can be calculated from his single best known contribution to science, which posits an equivalence between two of its parameters. For 10 points, name this scientist who stated that E = mc squared.
One exact solution to a set of equations created by this scientist predicts that rotating bodies would undergo frame dragging.
Albert {Einstein}