Jaroslav Heyrovský's Polarography

  Authors

Aktualita

  Item identifier

http://hdl.handle.net/20.500.12801/3901380-03

 Date issued

1940

 Type

clip, video

 Language(s)

Czech

 Description

The segment from the 1940 Český zvukový týdeník Aktualita (Czech Aktualita Sound Newsreel) Issue No. 3B shows scientist Jaroslav Heyrovský with physical chemist Rudolf Brdička who is demonstrating the principles of polarography. The method is used to determine the presence and concentration of substances in a solution. The camera captures the evaluation of the electric current's dependence on the voltage applied to a pair of electrodes immersed in a solution; with one electrode - the mercury drop electrode - being "perfectly" polarizable, while the other being non-polarizable. The curve on the graph shows polarographic waves that signify what various substances are present. The concentration of the respective substances is then determined by the electric current increases. An image shows the process of electrolysis of a human blood solution. Heyrovský's colleague, Masuzo Shikata from Japan, is also mentioned in the commentary.

 Publisher

Národní filmový archiv

 Subject(s)

laboratoř polarografická polarografie polarograf přístroj polarograf vědec při práci elektroda rtuťová elektrolýza drát potenciometrický galvanometr grafy polarografické papír fotografický zkumavky baňky pipety nemoc rakovina výzkum Zdravotní a sociální péče People::Heyrovský Jaroslav (1890-1967) People::Brdička Rudolf (1906-1970) Český zvukový týdeník Aktualita::1940/3B

 Collection(s)

Health and Social Welfare in the Czech Lands

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