Identity area
Reference code
Title
Date(s)
- 30-12-1936 (Creation)
Level of description
Extent and medium
10 laminated sheets
Context area
Name of creator
Biographical history
John Evershed (1864-1956) was an English astronomer who, in 1909, discovered the horizontal motion of gases outward from the centres of sunspots, a phenomenon sometimes called the Evershed effect. In 1906, Evershed became assistant director of the Kodaikanal and Madras observatories in India, later becoming director. Evershed retired in 1923, returning to England; in 1925, he built his own solar observatory at Ewhurst.
Repository
Archival history
The documents were transferred from Kodaikanal Solar Observatory to IIA Archives
Immediate source of acquisition or transfer
The documents were acquired from Kodaikanal Solar observatory
Content and structure area
Scope and content
The letter was a reply to the letter of the 6th of December 1936 and the reprint sent by John Evershed. He enclosed the letter of A. S. Eddington and replying to it. He explained his point of view on A. S. Eddington objection on his formula for the spectral shift of light.
Appraisal, destruction and scheduling
The documents were transferred to the IIA archives and have been preserved
Accruals
Further accruals are not expected
System of arrangement
Arranged roughly by events
Conditions of access and use area
Conditions governing access
Researchers must sign IIA Archival access agreement
Conditions governing reproduction
Copyright is retained by IIA Archives
Language of material
English
Script of material
Latin
Language and script notes
All documents are in English
Physical characteristics and technical requirements
Document is in good condition
Finding aids
Allied materials area
Existence and location of originals
The originals were located in the Kodaikanal Solar Observatory
Existence and location of copies
The original files were transferred to Bangalore campus, then processed and archived
Related units of description
Observation on related solar observations can be found in other field stations
Notes area
Alternative identifier(s)
Access points
Subject access points
Place access points
Name access points
- Evershed, John (Subject)
- Sulaiman (Subject)
Genre access points
Description control area
Description identifier
Institution identifier
Rules and/or conventions used
Archival description is based on ISAD(G), second edition.
Status
Level of detail
Dates of creation revision deletion
Language(s)
English
Script(s)
Latin
Sources
Archivist's note
Processed by IIA Archives