SZ/OEMU/19/3/24 - Preliminary note on the blast protection afforded to the ear by headphones, 4/42

Reference code

SZ/OEMU/19/3/24

Level of description

Item

Title

Preliminary note on the blast protection afforded to the ear by headphones, 4/42

Date/s

1942

Quantity & Format

1 leaf

Corporate name

Medical Research Council

Subject

Ear -- Wounds and injuries
Headphones (protective)

Creator

Road Research Laboratory

Scope and content

M.R.C./4/VJJ

"Tests to determine the protection afforded to the ear by Service headphones show that when the ear passage faces towards the charge the headphones reduce the pressures experienced at the membrane of the ear by approximately 50 per cent for pressures above 6lb./sq.in.. At lower pressures the headphones offer no appreciable protection against blast."

SZ - Zuckerman Archive
- SZ/OEMU - Ministry of Home Security, Oxford Extra-Mural Unit
  - SZ/OEMU/19 - [Medical Research Council. Military Personnel Research Committee. Sub-Committee on Body Armour and Steel Helmets]
    - SZ/OEMU/19/3 - [MRC. MPRC. Sub-Committee on Body Armour and Steel Helmets: Reports, 1942-1944]
      - SZ/OEMU/19/3/24 - Preliminary note on the blast protection afforded to the ear by headphones, 4/42

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