A photograph of a woman examining a display of Mullard valves taken by Malindine for the Daily Herald newspaper on 21 August, 1934. The Mullard Octode was a type of radio valve or vacuum tube. Before the invention of printed circuits, electronic devices such as radios relied on valve technology. Stanley Mullard began making radio valves afer the First World War. This photograph has been selected from the Daily Herald Archive, a collection of over three million photographs. The archive holds work of international, national and local importance by both staff and agency photographers.
© Daily Herald Archive / National Science & Media Museum / Science & Society Picture Library