31. Normal pipe operation would be a monopole sound source in Stage I with Class III feedback. 32. They are all subject to frequency jumps when overblown, suggesting the dipole-monopole relationship. 33. The monopole aspects are relatively fixed. 34. In more technical terms, a magnetic monopole would have a net " magnetic charge ". 35. Its geodesics have been studied and a programme of Manton concerning monopole dynamics put into effect. 36. For many purposes only the monopole , dipole, and quadrupole terms are needed in calculations. 37. Whether a monopole indicates a wine of unusual quality or not is a matter of debate. 38. Monopole antennas have become one of the components of mobile and internet networks across the globe.39. One researcher claimed to have observed a monopole with a light-bulb-sized detector. 40. The particle was tentatively identified as a magnetic monopole in 1975 by Price and some colleagues.