Franz Melde (March 11, 1832 - March 17, 1901) was a German physicist. Melde's experiment demonstrates standing waves on a string. Melde's experiment is used to measure the pattern of a standing wave, to measure the speed of transverse wave, and to determine the effect of tension to transverse wave in a string.
Leithen Water is a tributary of the River Tweed in Scotland. It joins it near the town of Innerleithen, whose name comes from the Scottish Gaelic inbhir, meaning a confluence, and anglicised as "inner" or "inver". The Brythonic equivalent is "Aber". "Leithen" is a Celtic name meaning grey in colour. In Innerleithen the river is about 6-7 metres across and is not deep enough to swim.