31. The radical-pair mechanism explains how a magnetic field can affect reaction kinetics by affecting electron spin dynamics. 32. Electron spin resonance rules out a metathesis.33. The Faraday effect is used in spintronics research to study the polarization of electron spins in semiconductors. 34. In polycrystalline media or frozen solution, ENDOR can provide spatial relationships between the coupled nuclei and electron spins . 35. The " d " orbitals plays an important role in the electron spin state of a coordination complex. 36. The electron spins are characterized by two quantum mechanical states, one parallel and one antiparallel to B 0. 37. He used X-rays to investigate ferromagnetism, concluding that it was a result of the alignment of electron spins . 38. When Paul Dirac derived his relativistic quantum mechanics in 1928, electron spin was an essential part of it. 39. While working on his PhD thesis, he carried out the first electron spin resonance experiments on single electron spins . 40. While working on his PhD thesis, he carried out the first electron spin resonance experiments on single electron spins.
