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luxometroLuxómetro : 

Sirve para la medición precisa de los acontecimientos luminosos en el sector de la industria, el comercio, la agricultura y la investigación. Además se puede utilizar el luxómetro para comprobar la iluminación del ordenador, del puesto de trabajo, en la decoración de escaparates y para el mundo del diseño. Contiene una célula fotoeléctrica que capta la luz y la convierte en impulsos eléctricos, los cuales son interpretados y representada en una pantalla con la correspondiente escala de luxes.


Un luxómetro (también llamado luxmetro o light meter) es un instrumento de medición que permite medir simple y rápidamente la iluminancia real y no subjetiva de un ambiente. La unidad de medida es lux. Contiene una célula fotoeléctrica que capta la luz y la convierte en impulsos eléctricos, los cuales son interpretados y representada en un display o aguja con la correspondiente escala de luxes.


El luxómetro moderno funciona según el principio de una celda (célula) C.C.D. o fotovoltaica; un circuito integrado recibe una cierta cantidad de luz (fotones que constituyen la “señal”, una energía de brillo) y la transforma en una señal eléctrica (analógica). Esta señal es visible por el desplazamiento de una aguja, el encendido de diodo o la fijación de una cifra. Una fotoresistencia asociada a un ohmímetro desempeñaría el mismo papel.


Un filtro de corrección de espectro permite evitar que las diferencias de espectro falseen la medida (la luz amarilla es más eficaz que la azul, por ejemplo, para producir un electrón a partir de la energía de un paquete de fotones).


Los luxómetros pueden tener varias escalas para adaptarse a las luminosidades débiles o las fuertes (hasta varias decenas de millares de luxes).

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594 supporters to push for more gun laws in Olympia Sandy Brown, President of the Center for Gun Responsibility, speaks Wednesday morning after their victory for initiative 594. At left are other supporters. (Greg Gilbert / The Seattle Times) The morning after voters approvedInitiative 594, the proposal to expand gun buyer background checks to private sales and transfers, the measure supporters declared they take their momentum to lawmakers in Olympia. are here this morning to announce that we are not packing up our tents, claiming victoryand going home, said Sandy Brown, president of the board for the Center for Gun Responsibility, at a news conference Wednesday. victory is just the beginning, he added. An advisory council to groups supporting I 594 is crafting proposals that can be taken to lawmakers for next year session. Brown and others wouldn speak to what those proposals may include, but that they would release more information some time in December. Rep. Ruth Kagi, D Seattle, has said she greg toler 2xl women jersey will reintroduce a bill that would make it a crime for someone to leave or storea loaded gun where a child could get access. A similar bill sponsored by Kagi last year did not get out of the House Judiciary Committee. do think the vote last night will make people more comfortable with the reasonable need for more gun safety laws, Kagi said Wednesday afternoon. A competing measure, Initiative 591, which would bar the state from enacting background checks beyond federal requirements, was still failing as of Wednesday afternoon. Alan Gottlieb, chair of the Protect Our Guns campaign, which haspromoted I 591, said groups seeking tighter gun laws would have trouble making strides due to the makeup of the Legislature. Republicans picked up a handful of seats in the state House and wereholdingon to seats necessaryto preservethe Republican dominated Majority Coalition Caucus in the Senate.
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