The lamp contains the fuel
A lamp separates stored fuel from the small area where it burns. The wick feeds the flame rather than exposing the whole reservoir at once. Roman terracotta lamps provide surviving examples of this compact arrangement; their dated museum records document objects, not the invention of all oil lamps. [1]
One principle, many traditions
A ninth-century bronze lamp excavated at Nishapur in Iran has an oil well, a wick spout and a handle. A Kachemak stone lamp from Cook Inlet, Alaska, is dated by the Smithsonian to AD 500–1100. These objects show distinct material and cultural traditions. They should not be treated as steps on a single ladder of European progress. [2] [3]
Candles carry their own reservoir
In a candle, solid wax or fat surrounds a wick. Heat melts nearby fuel, which is drawn toward the flame. Museum histories document tallow and beeswax candles; in Georgian England, tallow was common while beeswax was expensive. A rushlight was different: a prepared rush coated in fat and held in a clamp. [4] [5] [6]
Why does a candle flame point upward? NASA compares normal gravity at left with microgravity at right. The contrast helps explain the role of buoyant airflow around a burning wick.
NASA · NASA media guidelines permit factual educational and informational website use with acknowledgment; no endorsement implied View source and object record ↗A flame still needed a person
Wicks needed attention, fuel needed replenishing, and soot could obscure a lantern or lens. Holders and lanterns made flames easier to position or shield, but they did not create a new light source. Cost mattered too: the brighter or cleaner option was not equally available to every household. [4]
