Record revealed
Copy of Henry VIII's diplomatic assurances to João III of Portugal
Recently rediscovered, this letter offers new archival evidence into Britain and Portugal's shared history.
Piece
Radio frequency detection: use of thermistors
Catalogue reference: AVIA 42/58
What’s it about?
This record is about the Radio frequency detection: use of thermistors dating from 1941-1942 in the series Ministry of Supply and successors: British Central Scientific Office and British.... It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
Can I see it in person?
Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
-
Reference (The unique identifier to the record described, used to order and refer to it)
- AVIA 42/58
-
Date (When the record was created)
- 1941-1942
-
Description (What the record is about)
-
Radio frequency detection: use of thermistors
-
Held by (Who holds the record)
- The National Archives, Kew
-
Former department reference (Former identifier given by the originating creator)
- BCSO 92-3-1
-
Legal status (A note as to whether the record being described is a Public Record or not)
- Public Record(s)
-
Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
- Open Document, Open Description
-
Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
-
Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C486202/
How to order it
- View this record page in our current catalogue
- Check viewing and downloading options
- Select an option and follow instructions
Series information
AVIA 42
Ministry of Supply and successors: British Central Scientific Office and British...
See the series level description for more information about this record.
Catalogue hierarchy
Over 27 million records
96,521 records
100 records
You are currently looking at the piece: AVIA 42/58
Radio frequency detection: use of thermistors
You may be interested in
Read stories that share a catalogue subject with this record.
-
-
Record revealed
A dramatic plea for Churchill’s help from Bletchley Park
In 1941, four Government Code and Cypher School cryptanalysts, including Alan Turing, made a stunning appeal directly to Winston Churchill. -
Record revealed
Secret letter sent to British Secret Services
During the Second World War, some British prisoners of war were able to send secret messages and intelligence back home via creative and unusual ways.
Related records
Records that share similar topics with this record.