An olive oil lamp is a surprisingly safe and simple lamp that you can do-it-yourself. It produces light, as much as, or more than, an ordinary candle, and is an alternative to kerosene-style oil lamps. The concept of burning oil from vegetables (olive oil) in the home rather than petroleum based kerosene seems more appealing, less toxic, and safer.
The Romans and other ancients regularly burned olive oil in their lamps, so, the concept is sound. Pure olive oil will not produce smoke, while other types of vegetable oils may produce some residual smoke while burning.
For those who are curious, the cost of burning olive oil in this lamp will depend on wick size (flame size and corresponding oil consumption), while my own experiment consumed 2 ounces (1/8 cup) of olive oil in 5 hours. This calculates out to about 10-cents per hour depending on how cheap you can find pure olive oil. An ordinary Votive candle may cost about 3 to 5-cents per hour to burn, although probably not as bright as the oil lamp.
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