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The sodium D-line observed with a four-prism spectroscope

Автор: fstfirenze

Загружено: 2012-06-16

Просмотров: 12984

Описание:

LA LINEA DEL SODIO OSSERVATA CON UNO SPETTROSCOPIO A 4 PRISMI

Lo spettro del sodio è caratterizzato da un'intensa riga gialla (linea D) che in realtà è composta da due linee (588.9950 e 589.5924 nanometri). Il doppietto può essere risolto e osservato con uno spettroscopio a quattro prismi.
I prismi possono venire orientati in modo da esaminare tutto lo spettro visibile.
Una piccola porzione di asbesto viene intrisa di una soluzione di cloruro di sodio e quando è posta nella fiamma di un becco a gas produce la tipica luce gialla.
La luce di un secondo becco a gas proietta la scala di riferimento sul doppietto del sodio.

The sodium D-line observed with a four-prism spectroscope

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