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A model of Melde's experiment: an electric vibrator connected to a cable drives a pulley that suspends a mass that causes tension in the cable. Melde's experiment is a scientific experiment carried out in 1859 by the German physicist Franz Melde on the standing waves produced in a tense cable originally set oscillating by a tuning fork , later ...
The 2008 German film Die Welle transferred the experiment to a modern-day German classroom. The film received critical acclaim. "The Pride of Lakewood", a 2010 episode of children's animated series Arthur, was loosely based on the Third Wave experiment. In it, students who form a community pride group become fascistic.
Propagation of a wave packet demonstrating a phase velocity greater than the group velocity. This shows a wave with the group velocity and phase velocity going in different directions. The group velocity is positive, while the phase velocity is negative. [1] The phase velocity of a wave is the rate at which the wave propagates in any medium.
A wave function for a single electron on 5d atomic orbital of a hydrogen atom. The solid body shows the places where the electron's probability density is above a certain value (here 0.02 nm −3): this is calculated from the probability amplitude. The hue on the colored surface shows the complex phase of the wave function.
Conversely, a phase reversal or phase inversion implies a 180-degree phase shift. [ 2 ] When the phase difference φ ( t ) {\displaystyle \varphi (t)} is a quarter of turn (a right angle, +90° = π/2 or −90° = 270° = −π/2 = 3π/2 ), sinusoidal signals are sometimes said to be in quadrature , e.g., in-phase and quadrature components of a ...
Ron Jones (born 1941) is an American writer and formerly a teacher in Palo Alto, California.He is best known for his classroom exercise called "The Third Wave" and the book he wrote about the event, which inspired the made-for-TV movie The Wave and other works, including a theatrical film in 2008.
Template: Table of phase transitions. 9 languages. ... This page was last edited on 26 June 2024, at 13:11 (UTC).
Otto Wiener was a son of Christian Wiener and Pauline Hausrath. Orphan of mother at the age of 3, he married Lina Fenner at 32. [1]He was a pupil of August Kundt at the University of Strasbourg, where he received his doctorate in 1887 with a thesis on the phase change of light upon reflection, and methods to determine the thickness of thin films.