Notes

The researchers believed that the scented candles will burn faster than the unscented candles.

One of the earliest forms of portable illumination, candles have served vital functions for humankind throughout history, a fact chronicled through the discovery of candles or candle-like objects in virtually every society. Historians believe the original candle may have been invented by primitive men who dipped dried branches in animal fat, thus producing a slow-burning and reliable source of light. Reliefs belonging to the ancient Egyptians depict the use of candles by writers and philosophers who worked well after sundown. These early candles were most likely developed from tapers that were made of fibrous materials mixed with wax or tallow (the white, nearly tasteless fat of cattle or sheep that was also used to make soap, margarine, and lubricants). As far back as 3000 b.c., dish-shaped candles were used on the island of Crete.

Although the materials that comprise a candle have changed through the years, the art of candlemaking has remained surprisingly similar to the original production processes. Candle wicks were, at first, made of reeds or rushes; eventually, various natural fibers were used. In 1824, Frenchman Jean-Jacques Cambaraceres introduced an important refinement in wick technology with the plaited wick, which burned more evenly than unplaited wicks. Twisted or plaited cotton still makes up most wicks today