SZ/OEMU/2/1/3 - [Letter, J.T. Randall to SZ, 3/4/41]

Reference code

SZ/OEMU/2/1/3

Level of description

Item

Title

[Letter, J.T. Randall to SZ, 3/4/41]

Date/s

1941

Quantity & Format

1 leaf Letters (typescript)

Subject

Aeroplanes -- Instruments

Creator

Randall, J. T.

Creator

Zuckerman, Solly, 1904-1993

Administrative/Biographical history

recipient

Scope and content

Mentions the availability of orange phosphorescent materials which may suffice for red. The after-glow period is significant. Orange-red zinc-cadmium sulphides are suggested for a glow not requiring more than half-an-hour. For a longer glow, experiments with calcium sulphides and special activators are suggested. [The query is to determine the best illumination for instrument panels in night flying].

SZ - Zuckerman Archive
- SZ/OEMU - Ministry of Home Security, Oxford Extra-Mural Unit
  - SZ/OEMU/2 - [OEMU. Research queries and correspondence, 1940-1962]
    - SZ/OEMU/2/1 - [General Correspondence, 1941-1944]
      - SZ/OEMU/2/1/3 - [Letter, J.T. Randall to SZ, 3/4/41]

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