A spark plug is made of a center electrode, an insulator, a metal casing or shell, and a side electrode (also called a ground electrode). The center electrode is a thick metal wire that lies lengthwise within the plug and conducts electricity from the ignition cable hooked to one end of the plug to the electrode gap at the other end.
color of candles It turned out, in the end, pink candles burn the longest, although, it was only off by 0.1 cm. Candles burn faster the first time you light them. Then as you light them again, they burn slower. Blue is in 2nd place, white and gold/yellow are tied for 3rd and green burns the fastest. most scented candles or birthday candles burn out
Paraffin is the most frequently used wax when making a candle. However, soy wax, gels, synthetic waxes, palm wax and beeswax are also used. Some manufacturers use different blends of waxes. A quality candle wax burns safely and cleanly.he liquid/melted wax is drawn up into the wick by capillary action. The heat vaporizes the liquid wax to produce carbon dioxide and water vapor. A candle that is made well, no matter what the candles are made from, will not produce smoke when it is burning.