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Wood was either used for construction on the exterior or in combination with masonry and/or iron to build components of the lighthouse (ex. stairs). The largest cause for deterioration of wood in lighthouses is from exposure to moisture. This exposure is normally the result of direct and prolonged exposure to damp conditions.
Wood from other locations can also be used, such as the joints where limbs intersect the trunk. Although most resinous pines can produce fatwood, in the southeastern United States the wood is commonly associated with longleaf pine ( Pinus palustris ), which historically was highly valued for its high pitch production.
The heat of the smouldering wood inside the pile drives all liquid and organic components out of the wood as smoke. The job of the charcoal burner at this stage is to neither let the pile go out nor to let it burn down as a result of too much air over the following days or weeks (depending on the size of the pile and the weather). To do this ...
The lighthouse's carbon arc lamps were powered by a steam-driven magneto. [13] John Richardson Wigham was the first to develop a system for gas illumination of lighthouses. His improved gas 'crocus' burner at the Baily Lighthouse near Dublin was 13 times more powerful than the most brilliant light then known. [14]
This, in turn, controls the flow rate of the gas and the size of the flame at the burner, and thus the amount of light it produces. This type of lamp generally has a reflector behind the flame to help project the light forward. An acetylene gas powered lamp produces a bright, broad light.
The lamp burner has a flat wick, usually made of cotton. The lower part of the wick dips into the fount and absorbs the kerosene; the top part of the wick extends out of the wick tube of the lamp burner, which includes a wick-adjustment mechanism. Adjusting how much of the wick extends above the wick tube controls the flame.
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