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 making jump rings, use 10- to 18-gauge wire (2.5 to 1.3 mm). Bracelet and necklace wire components are generally made out of wire that is 16-, 18- or 20-gauge (1.3 to 0.8 mm). Earring wires are usually made out of 18- or 20-gauge wire (1.0 to 0.8 mm).
Many types of wire are used for tension wire. The intended wire is usually a 7 ga. wire which comes in large coils (about 18-24 in diameter) and is not perfectly straight. It has slight bends back and forth, called springs, that resist being pulled straight, which helps keep the wire tight after installation.