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.
The diameter of an n gauge wire (commonly written nga), is defined to be: For larger gauges written as m zeros, let n = â(m â 1). That is, 0ga = 0, 00ga = â1, etc. Body jewelry is measured using calipers, Vernier Gauge, a micrometer or a gauge wheel by its outer diameter.