541 resultados para LAMP
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Obverse: 10 Lirot silver coin. Reverse: Hanukkah lamp from Jerusalem.
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Obverse: 10 Lirot coin. Reverse: Hanukkah lamp from Jerusalem.
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Obverse: silver 100 Lirot coin. Reverse: Hanukkah lamp from Egypt.
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Obverse: 1 Sheqel silver coin, where one is connected to the last letter of the word 'Sheqel'. Reverse: Hanukkah lamp from Poland, 19th century.
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Obverse: 1 Sheqel silver coin, one is created by the ending of the last letter of the word 'Sheqel'. Reverse: Hanukkah lamp from Poland.
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Obverse: 1 Sheqel silver coin with designs on the sides. Reverse: Hanukkah lamp from Prague, 18th century
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Obverse: 1 Sheqel silver coin, number one designed to remind striped clothing of the inmates of concentration camps. Reverse: Hanukkah lamp from Theresienstadt.
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Obverse: 2 Sheqalim silver coin, number one designed to remind striped clothing of the inmates of concentration camps. Reverse: Hanukkah lamp from Theresienstadt.
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Obverse: 1 Sheqel silver coin, large emblem of the State of Israel. Reverse: Hanukkah lamp from Yemen, inscription written in old Yemenite script.
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Obverse: 2 Sheqalim silver coin, large emblem of the State of Israel. Reverse: Hanukkah lamp from Yemen, inscription in the old Yemenite script.
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Red, blue and green emitting lamp phosphors such as EU(3+) doped Y2O3 (red phosphor), EU(2+) doped Ba0.64Al12O18.64, BaMgAl10O17 and BaMg2Al16O27 (blue phosphors) and Ce0.67Tb0.33MgAl11O19 and Eu2+, Mn2+ doped BaMgAl10O17 (green phosphors) have been prepared by the combustion of the corresponding metal nitrates (oxidizer) and oxalyl dihydrazide/urea/carbohydrazide (fuel) mixtures at 400 degrees-500 degrees C within 5 min. The formation of these phosphors has been confirmed by their characteristic powder X-ray diffraction patterns and fluorescence spectra. The phosphors showed characteristic emission bands at 611 nm (red emission), 430-450 nm (blue emission) and 515-540 nm (green emission). The fine-particle nature of the combustion derived phosphors has been investigated using powder density, particle size and BET surface area measurements.