One cell photometer, Unknown Artist | Artsupp

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One cell photometer

Anonymous

Displayed in:

Astronomical Observatory of Abruzzo

Via Mentore Maggini, Teramo

Open now from 09:00 to 14:00

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First photometer built in Collurania, with a photoelectric cell, with a cardan-suspended electrometer. The instrument consists of a cylindrical chamber to be inserted into the ocular end of the Cooke refractor. The operating principle is to transform light into something measurable: this is achieved by exploiting a physical property of alkali metals that emit a number of electrons proportional to the energy of the incident light, thus allowing an objective and precise measurement of the luminosity of the stars. and its variations.

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Details

Title: One cell photometer

Author: Anonymous

Date: 1929

Technique:

Displayed in: Astronomical Observatory of Abruzzo

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