melde experiment viva question
#1

is theloop formedapparent or real inmeldes expt?
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#2
The Melde experiment is a scientific experiment carried out in 1859 by the German physicist Franz Melde on the standing waves produced in a taut cable originally established oscillating by a tuning fork, later improved with connection to an electric vibrator. This experiment, "a waiting conference room," attempted to demonstrate that mechanical waves suffer from interference phenomena. In the experiment, the mechanical waves travelled in opposite directions forming immovable points, called nodes. These waves were called standing waves by Melde, since the position of the nodes and loops (points where the cord vibrated) remained static.
The stationary waves were discovered by Franz Melde, who coined the term "standing wave" around 1860. Melde generated parametric oscillations in a string using a tuning fork to periodically vary the tension at twice the resonance frequency of the string.

The undulatory phenomena in nature have been investigated for centuries, some of the most controversial subjects in the history of science, and therefore the case is with the undulatory nature of light. In the seventeenth century, Sir Isaac Newton described light through a corpuscular theory. The English physicist Thomas Young later contrasted Newton's theories in the eighteenth century and established the scientific basis upon which wave theories rest. At the end of the 19th century, at the height of the Second Industrial Revolution, the creation of electricity as the technology of the time offered a new contribution to wave theories. This advance allowed Franz Melde to recognize the phenomena of wave interference and the creation of standing waves. Later Scottish physicist James Clerk Maxwell in his study of the undulatory nature of light managed to express the waves and the electromagnetic spectrum in a mathematical formula.
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