Complex sentence: David DeMille is a Professor of Physics at Yale University, best known for his use of polar diatomic molecules to amplify symmetry-violating effects within the molecules and as a means for manipulating the external properties of the molecules.
Split into simpler sentences: David DeMille is a Professor of Physics at Yale University. He is best known for his use of polar diatomic molecules to amplify symmetry-violating effects within the molecules and as a means for manipulating the external properties of the molecules.