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Heyrovský's Polarograph. Polarography is an electrochemical voltammetric technique that employs (dropping or static) mercury drop as a working electrode. In its most simple form polarography can be used to determine concentrations of electroactive species in liquids by measuring their mass-transport limiting currents.
Bloch oscillation is a phenomenon from solid state physics. It describes the oscillation of a particle (e.g. an electron ) confined in a periodic potential when a constant force is acting on it. It was first pointed out by Felix Bloch and Clarence Zener while studying the electrical properties of crystals.
In polarography, these problems included the fact that mercury is oxidized at a potential that is more positive than +0.2 Volt, making it harder to analyze the results for the analytes in the positive region of the potential. Another problem included the residual current obtained from the charging of the large capacitance of the electrode ...
Current and historic polar motion data is available from the International Earth Rotation and Reference Systems Service's Earth orientation parameters. [19] Note in using this data that the convention is to define p x to be positive along 0° longitude and p y to be positive along 90°E longitude. [20]
Double-pulsed chronoamperometry waveform showing integrated region for charge determination.. In electrochemistry, chronoamperometry is an analytical technique in which the electric potential of the working electrode is stepped and the resulting current from faradaic processes occurring at the electrode (caused by the potential step) is monitored as a function of time.
Drude particles are model oscillators used to simulate the effects of electronic polarizability in the context of a classical molecular mechanics force field.They are inspired by the Drude model of mobile electrons and are used in the computational study of proteins, nucleic acids, and other biomolecules.
In the serial RLC circuit there is a current i, and towards the triode anode ("plate") a current i a, while there is a voltage u g on the triode control grid. The Van der Pol oscillator is forced by an AC voltage source E s. Author James Gleick described a vacuum tube Van der Pol oscillator in his book from 1987 Chaos: Making a New Science. [28]
The Kuramoto model (or Kuramoto–Daido model), first proposed by Yoshiki Kuramoto (蔵本 由紀, Kuramoto Yoshiki), [1] [2] is a mathematical model used in describing synchronization.