Historically, explanation has been associated with causation: to explain an event or phenomenon is to identify its cause. But with the growth and development of philosophy of science in the 20th century, the concept of explanation began to receive more rigorous and specific analysis.
For jewelry applications, gauges 12-28 are most common. The size of wire is defined by one of two measuring systems. The American wire gauge (AWG) and the Standard wire gauge (SWG) systems.
Wire Gauges - In reference to wire gauge sizes, the larger the number, the smaller the diameter of the wire. 26g - extra fine - for very small and delicate projects. 24g - fine - for pearls & most gemstones - easy to work with. 22g - medium - fairly universal for glass beads, fits some pearls and gemstones.