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An oil lamp is a lamp used to produce light continuously for a period of time using an oil-based fuel source. The use of oil lamps began thousands of years ago and continues to this day, although their use is less common in modern times.
A moderator lamp provides a pressurized supply of oil to the lamp wick by use of a spiral spring-loaded piston operating on a cylindrical oil reservoir. A regulating mechanism, the "moderator", compensates for the varying force of the spring as the piston descends. The moderator is a wire that runs through a tube in the center of the piston.
Water clocks or clepsydra measure a gain or loss of water by using drops of uniform size and frequency. The Persian fenjaan made use of the constant time it took for the sinking of a floating bowl with a hole in its underside. It is unknown when or where the oil-lamp clock was first introduced. This clock was mainly used during the mid-18th ...
The term "lamp oil", or the equivalent in the local languages, is common in the majority of Asia and the Southeastern United States, although in Appalachia, it is also commonly referred to as "coal oil". [7] Confusingly, the name "paraffin" is also used to refer to a number of distinct petroleum byproducts other than kerosene.
The pump mechanism used to pump lamp oil to the burner in the Carcel lamp of 1800. The pump was immersed in the lamp oil reservoir. The piston was powered by a clockwork motor, which is not shown. The Carcel lamp was an efficient lighting device used in the nineteenth century for domestic purposes and in France as the standard measure for ...
The Betty lamp differs from earlier oil/grease lamps in that it uses an internal wick holder to eliminate fuel drip common with older lamp designs. This internal wick holder feature made the Betty lamp design very popular. The Betty lamp is likely a natural evolution of the Crusie lamp concept. The Crusie lamp consists of two lamp pans, one ...
Freezing is a common method of food preservation that slows both food decay and the growth of micro-organisms. Besides the effect of lower temperatures on reaction rates, freezing makes water less available for bacteria growth. Freezing is a widely used method of food preservation. Freezing generally preserves flavours, smell and nutritional ...
Aladdin Lamps is the only maker of this style lamp today. [16] Even they, are now marketing electric fixtures that fit the old style lamps. Large fixed pressurized kerosene mantle lamps were used in lighthouse beacons for navigation of ships, brighter and with lower fuel consumption than oil lamps used before. [17]