The use of candles for light and heat is known to have existed in ancient times. It is believed that they were used by cavemen while painting and etching on the walls. These candles were probably made from animal fat.
The burning process of a candle involves all the four basic elements of matter. These are solids, liquids, gas, and plasma.
In most candles, the body of the candle is made of paraffin wax or beeswax. Paraffin wax is a natural wax that comes from plants. Beeswax taken from the honeycombs of the honeybees, is also considered a natural wax. A braided cotton fibre wick is placed in the center of the wax before it dries. The wick is very thin, and a critical component of the candle in controlling the flame size.
Nowadays candle makers are producing all kinds of candles for decorative use. The need to design a candle for its heat or light properties is now no longer the prime purpose of a candle. There is no limit to the shapes, sizes, and colours for candles which are now very popular for the wonderful aromas that they emit .