Oil-lamp clocks are clocks consisting of a graduated glass reservoir to hold oil - usually whale oil, which burned cleanly and evenly - supplying the fuel for a built-in lamp. As the level in the reservoir dropped, it provided a rough measure of the passage of time. It is unknown when or where the oil-lamp clock was first introduced. This clock was mainly used during the mid-18th century.
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| - Öllampenuhr (de)
- Reloj de lámpara de aceite (es)
- Oil-lamp clock (en)
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| - Die Öllampenuhr auch Öluhr oder Zeitlampe genannt, ist eine gläserne Öllampe die mit Markierungen versehen ist. Am Stand des verbliebenen Öls kann man die vergangene Zeit ablesen. Öluhren gehören zu den Elementaruhren. (de)
- El reloj de lámpara de aceite es un tipo de reloj que consiste en un depósito de vidrio graduado para contener aceite, generalmente aceite de ballena, que se quema limpia y uniformemente, suministrando el combustible para una lámpara de aceite incorporada. A medida que baja el nivel del depósito, proporciona una medida aproximada del paso del tiempo. (es)
- Oil-lamp clocks are clocks consisting of a graduated glass reservoir to hold oil - usually whale oil, which burned cleanly and evenly - supplying the fuel for a built-in lamp. As the level in the reservoir dropped, it provided a rough measure of the passage of time. It is unknown when or where the oil-lamp clock was first introduced. This clock was mainly used during the mid-18th century. (en)
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| - Die Öllampenuhr auch Öluhr oder Zeitlampe genannt, ist eine gläserne Öllampe die mit Markierungen versehen ist. Am Stand des verbliebenen Öls kann man die vergangene Zeit ablesen. Öluhren gehören zu den Elementaruhren. (de)
- El reloj de lámpara de aceite es un tipo de reloj que consiste en un depósito de vidrio graduado para contener aceite, generalmente aceite de ballena, que se quema limpia y uniformemente, suministrando el combustible para una lámpara de aceite incorporada. A medida que baja el nivel del depósito, proporciona una medida aproximada del paso del tiempo. El principio detrás de un dispositivo de cronometraje de este tipo es que mide una cantidad que disminuye o aumenta a un ritmo constante. Las lámparas de aceite o las velas, que queman combustible a un ritmo constante, se ajustan a esta categoría y, como beneficio adicional, producen luz útil. Los relojes de arena dependen del vaciado constante de arena fina a través de una pequeña abertura; los relojes de agua o clepsidras miden la ganancia o pérdida de agua utilizando gotas de tamaño y frecuencia uniformes; el persa media el tiempo que tardaba en hundirse un cuenco flotante con un agujero en la parte inferior.Se desconoce cuándo o dónde se introdujo por primera vez el reloj de lámpara de aceite. Este reloj se utilizó principalmente a mediados del siglo XVIII. (es)
- Oil-lamp clocks are clocks consisting of a graduated glass reservoir to hold oil - usually whale oil, which burned cleanly and evenly - supplying the fuel for a built-in lamp. As the level in the reservoir dropped, it provided a rough measure of the passage of time. The principle behind such a time-keeping device is that it measure a quantity that either decreases or increases at a constant rate. Lamps or candles, burning fuel at a steady pace, fit this category, and as a bonus produce useful light. Hourglasses depend on the steady draining of fine sand through a small aperture. 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 century. (en)
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