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- When the electric field is removed, the atom returns to its original state. The time required to do so is called relaxation time; an exponential decay.
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Feb 10, 2019 · Electrical relaxation is therefore discussed separately in Chap. 7 (dielectric relaxation) and Chap. 8 (conductivity relaxation). 2.8 Circuits. There are the four fundamental elements in analog passive circuits: resistance R; capacitance C; self-inductance L; mutual inductance M. 2.8.1 Simple Circuits 2.8.1.1 Resistances in Series and in Parallel
- Ian M. Hodge
- 2019
It is important in dielectric spectroscopy. Very long relaxation times are responsible for dielectric absorption . The dielectric relaxation time is closely related to the electrical conductivity. In a semiconductor it is a measure of how long it takes to become neutralized by conduction process.
In physics, dielectric relaxation refers to the relaxation response of a dielectric medium to an external, oscillating electric field. This relaxation is often described in terms of permittivity as a function of frequency, which can, for ideal systems, be described by the Debye equation.
- The Sliding Filament Model of Contraction. When signaled by a motor neuron, a skeletal muscle fiber contracts as the thin filaments are pulled and then slide past the thick filaments within the fiber’s sarcomeres.
- ATP and Muscle Contraction. For thin filaments to continue to slide past thick filaments during muscle contraction, myosin heads must pull the actin at the binding sites, detach, re-cock, attach to more binding sites, pull, detach, re-cock, etc.
- Sources of ATP. ATP supplies the energy for muscle contraction to take place. In addition to its direct role in the cross-bridge cycle, ATP also provides the energy for the active-transport Ca pumps in the SR.
- Relaxation of a Skeletal Muscle. Relaxing skeletal muscle fibers, and ultimately, the skeletal muscle, begins with the motor neuron, which stops releasing its chemical signal, ACh, into the synapse at the NMJ.
Dielectric relaxation. Dielectric relaxation as a whole is the result of the movement of dipoles (dipole relaxation) and electric charges (ionic relaxation) due to an applied alternating field, and is usually observed in the frequency range 10 2-10 10 Hz.
Relaxation of electric fields and charge in conducting media. lectric and magnetic fields established in conducting time-invariant homogeneous media tend to decay exponentially unless maintained.
