A Brief on Candles
Candle - cylinder of wax or tallow containing a wick, used for illumination or for ceremonial purposes. The evidence of ancient writings is not conclusive as to the history of the candle; words translated “candle” may have meant “torch” or “lamp,” and the “candlestick” was probably a stand for one of these lights. The candle probably evolved from wood, rushes, or cords dipped in fat or pitch. Candles as well as lamps were used in Roman times; by the Middle Ages candles (tallow for the poor and wax for the wealthier) were quite common in Europe. Tallow, beeswax, and vegetable wax such as bayberry in the American colonies, candleberry in the East, and waxberry in South America were supplemented by spermaceti in the late 18th cent., by stearine c.1825, and by paraffin c.1850. Twisted strands for wicks were replaced (c.1825) by the plaited wick. Candles were commonly made by repeated dipping in melted tallow, by pouring tallow or wax into molds, or by pouring beeswax over the wicks. Most modern candles are machine-made by a molding process, although candle making as an art survives in industrialized countries. In literature, art, and religion the candle has had a wide range of symbolism; it commonly represents joy, reverence for the divine, and sacrifice (since the candle spends itself).
Source: Columbia Encyclopedia
More Info on Candles
A candle is a light source usually consisting of an internal wick which rises through the center of a column of solid fuel. Typically the fuel is some form of wax with paraffin wax being the most common.
Prior to the candle being ignited, the wick is saturated with the fuel in its solid form. The heat of the match or other flame being used to light the candle first melts and then vaporizes a small amount of the fuel. Once vaporized, the fuel combines with oxygen in the atmosphere to form a flame. This flame then provides sufficient heat to keep the candle burning via a self-sustaining chain of events: the heat of the flame melts the top of the mass of solid fuel, the liquified fuel then moves upward through the wick via capillary action, and the liquified fuel is then vaporized to burn within the candle's flame.
The burning of the fuel takes place in several distinct regions (as evidenced by the various colors that can be seen within the candle's flame). Within the bluer, hotter regions, hydrogen is being separated from the fuel and burned to form water vapor. The brighter, yellower part of the flame is the remaining carbon soot being oxidized to form carbon dioxide.
As the mass of the solid fuel is melted and consumed, the candle grows shorter. Portions of the wick that are not evaporating the liquid fuel are themselves consumed in the flame, limiting the exposed length of the wick.
Prior to the domestication of electricity, candles were a common source of lighting, before, and later in addition to, the oil lamp. Due to local availability and the cost of resources, for several centuries up to the 19th century candles were more common in northern Europe, and olive oil lamps more common in southern Europe and around the Mediterranean Sea. Makers of candles were known as chandlers.
Today, candles are usually used for their aesthetic value, particularly to set a soft, warm, or romantic ambience, and for emergency lighting during electrical power failures. Scented candles are common in aromatherapy.
Religion
Candles are used in religious ceremonies.
Buddhism
The Ubon Ratchathani Candle Festival (known in Thai as Haetian) is held in Ubon Ratchathani, Isan, Thailand, around the days of Asanha Puja (which commemorates the Buddha’s first sermon) and Wan Kao Pansa (which marks the beginning of vassa).
At the start of the Lenten period, it is traditional for the devout to donate to monks items of personal use, such as candles. This part of the festival became the core of the Ubon Ratchathani version of the event. It is now a major event both for residents and for tourists: giant candles are paraded through the town, each representing a local temple, district or other institution. The more elaborate versions are accompanied by scenes of Hindu and Buddhist mythology sculpted in wood or plaster and coated with wax.
The candles are carved a couple of days before the procession.
On Asanha Bucha day, the candles are taken to Tung Sri Muang, a park in the middle of the city, where they are decorated and then exhibited in the evening. On the same evening, there are small processions with lighted candles at several temples.
The procession takes place on the morning of Wan Kao Pansa. The candles are paraded through the city centre on floats, accompanied by representatives of the respective institutions. These are normally dancers or musicians in traditional dress.
In addition to the above, the festival is accompanied by the usual paraphernalia of feasting and games which attend any Thai festival.
Christianity
In Christianity, they typically represent the light of Jesus, and are often placed on the altar. Votive candles may be lit as an accompaniment to prayer. Candles are lit by worshippers in front of icons in Orthodox and other churches. See also Paschal candle and Dikiri and trikiri. Candlemas marks the end of the season of Epiphany.
Candles were traditionally used to light up Christmas trees before the advent of electric lights. They are still, even today, commonly used to decorate Christmas trees in Denmark and other European countries. They are also used in Advent wreaths.
In Sweden (and other Scandinavian countries), St. Lucia Day is celebrated on December 13 with the crowning of a young girl with a ring of candles.
Judaism
In Judaism, candles are traditionally lit on Friday evening at the start of the weekly Sabbath celebration. The Jewish holiday of Chanukah, also known as the Festival of Lights, is celebrated by lighting a candle in a special candelabrum (menorah) each night during the eight-day holiday to commemorate the dedication of the altar in the Temple in Jerusalem. Candles are also used in remembering a deceased loved one, especially on Yom HaShoah, The Day of the Holocaust.
Kwanzaa
Candles are also used in celebrations of Kwanzaa, which is an African American holiday which runs from December 26 to January 1.
Humanism
For Humanists, skeptics, and nontheists (and particularly secular humanists), candles have become a symbol of the light of reason or rationality. This association was inspired by Carl Sagan, who subtitled his 1997 book The Demon-Haunted World with Science as a Candle in the Dark. The Humanist festival of HumanLight often features a candle-lighting ceremony.
Measurement
With the fairly consistent and measurable burning of a candle a common use was to tell the time, though the accuracy is debatable. Some candles have these measurements, usually in hours, marked along the wax.
In the days leading to Christmas some people burn a set amount to represent each day, as marked on the candle.
Fuel and Candle Holders
Candles can be made of paraffin (a byproduct of oil refining), stearin (now produced almost exclusively from palm waxes), beeswax (a by product of honey collection), some plant waxes (generally palm, carnuba, bayberry, or soy), or tallow (a rarely used byproduct of beef fat rendering). Candles are produced in various colors, shapes, sizes and scents. The most basic production method generally entails the liquification of the solid fuel by the controlled application of heat. This liquid is then poured into a mold to produce pillar candles, a fireproof jar to produce container candles, or a wick is repeatedly immersed in the liquid to create a dipped taper. Often times scents in the form of a polar or non-polar synthetic oil is added to the liquid wax prior to pouring. Natural scents, in the form of essential oils, can be used, but these are usually only found in premium, small-run candles. Candles may also be colored by the addition of some sort of coloring agent. In practical terms this is almost always an aniline based dye however, pigments can be used in some circumstances.
It is commonly believed candles made of beeswax and/or soy burn more cleanly than petroleum based paraffin waxes. The amount of soot produced by a candle, independent of what kind of wax is used, is generally more dependent on environmental conditions (drafts will often cause sooting) and the type of wick used (a poorly sized wick will lead to sooting). The inclusion of any scents and/or dyes will increase the amount of particulates put into the air by any candle regardless of construction materials. The cleanest burning candles will therefore be unscented, undyed, and well constructed candles burning in a draft free area.
Decorative candle holders, especially those shaped as a pedestal, are called candlesticks; if multiple candles are held, the term candelabrum is also used. The root form of chandelier is from the word for candle, though candles are rarely raised and hung today.
Source: Reference.com