<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31307693</termId><termName>quincke&apos;s tubes</termName><termType>PT</termType><termNote><![CDATA[ Instruments used to demonstrate the interference of sound, consisting of two U-tubes, one sliding into the other, with a Galton's whistle at one intersection of the tubes and a sensitive flame at the other. Air passes through the two bends of the tube to meet at the flame, and the flicker is analyzed against a scale on one of the tubes. ]]></termNote><termCreatedDate>2026-03-30 20:22:48</termCreatedDate><relation><relationType>UF</relationType><termId>31307694</termId><termName>quincke&apos;s tube</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31307695</termId><termName>tubes, quincke&apos;s</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31299038</termId><termName>sound devices</termName><termType>PT</termType></relation></term>  </Zthes>