31. :: Elementary particles have spin, despite being considered point particles. 32. The Oldenburg hecklers were I suspect somewhat frustrated elementary particle physicists ." 33. So far, no elementary particle with spin 3 / 2 has been found experimentally. 34. However, both protons and neutrons are composite particles composed of elementary particles called quarks. 35. His research fields were elementary particle physics and neural networks. 36. Or shall we start linking to the Bhagavad Gita on questions about elementary particles ? 37. Currently, the interactions of elementary particles and electromagnetic fundamental forces. 38. This method led to model-independent standard theory of elementary particles . 39. The axion is a hypothetical elementary particle originally postulated to solve the strong CP problem. 40. Gauge theories are important as the successful field theories explaining the dynamics of elementary particles .