<?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-30T16:15:46Z</responseDate><request identifier="oai:archives.ncbs.res.in:/repositories/2/archival_objects/17119" metadataPrefix="oai_dc" verb="GetRecord">https://oai.catalogue.archives.ncbs.res.in/</request><GetRecord><record><header><identifier>oai:archives.ncbs.res.in:/repositories/2/archival_objects/17119</identifier><datestamp>2026-02-22T16:55:39Z</datestamp></header><metadata><oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:publisher xmlns:dc="http://purl.org/dc/elements/1.1/">Archives at NCBS</dc:publisher><dc:publisher xmlns:dc="http://purl.org/dc/elements/1.1/">Tata Institute of Fundamental Research</dc:publisher><dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/">MS-024-2.MS-024-2-2.MS-024-2-2-5-33</dc:identifier><dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/">https://catalogue.archives.ncbs.res.in/repositories/2/archival_objects/17119</dc:identifier><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krishnan, Kariamanikkam Srinivasa, Sir, 1898-1961 (Physicist)</dc:creator><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ramachandran, Anjali</dc:creator><dc:title xmlns:dc="http://purl.org/dc/elements/1.1/">Polarization Field and the Acoustic Modes of Oscillation of Alkali Halide Crystals, bulk: 5 January 1952, 26 July 1952, 10 September 1952</dc:title><dc:date xmlns:dc="http://purl.org/dc/elements/1.1/">5 January 1952, 26 July 1952, 10 September 1952</dc:date><dc:format xmlns:dc="http://purl.org/dc/elements/1.1/">16.5 Linear Feet</dc:format><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">eng</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">Latn</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">jpn</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">Hrkt</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">tam</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">Taml</dc:language><dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">eng</dc:language><dc:description xmlns:dc="http://purl.org/dc/elements/1.1/">Contains a typewritten draft of a letter by K S Krishnan and S K Roy to the editor of Nature with explanations about some concepts of their paper titled "Polarization Field and the Acoustic Modes of Oscillation of Alkali Halide Crystals". It also contains a cutting from Nature of the same research paper dated 26 July 1952.</dc:description><dc:rights xmlns:dc="http://purl.org/dc/elements/1.1/">Access Level: Open/Online.</dc:rights><dc:rights xmlns:dc="http://purl.org/dc/elements/1.1/">Copyright may not have been assigned to Archives, National Centre for Biological Sciences. Permission for reproduction or distribution must be obtained in writing from the Archives at NCBS (archives@ncbs.res.in). The Archives at NCBS makes no representation that it is the copyright owner in all of its collections. The user must obtain all necessary rights and clearances before use of material and material may only be reproduced for academic and non-commercial use.</dc:rights><dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/">K S Krishnan Papers, MS-024</dc:relation></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>