Photometer devised by Beer

Autor/Urheber:

August Beer

(Life time: 31 July 1825 – 18 November 1863)

Shortlink:

https://www.dewiki.de/b/2114f1

Quelle:

Wikimedia Commons

Größe:

475 x 240 Pixel (26844 Bytes)

Beschreibung:

Light from the lamp at the right-hand side passes through an absorption cell, whereas the lamp at the left-hand side is a reference source. The photometer is adjusted so that the observed intensities from the two light sources are equal.

Lizenz:

Public domain

Credit:

Original publication: 1855

Immediate source: http://www.canberra.edu.au/irps/archives/vol21no1/blbalaw.html

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