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Magnetometer
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Proton Precession Magnetometers (PPM)
PPMs, also known as Proton Free-Precession Magnetometers, are scalar instruments that measure the total magnetic field magnitude by exploiting the quantum property of proton spin alignment. A coil containing a proton-rich fluid (often water or kerosene) is subjected to a strong, temporary polarizing magnetic field, causing the [hydrogen nuc… -
Model
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Force Field Modeling in Molecular Dynamics
Computational simulations, especially those in Molecular Dynamics, rely heavily on pre-defined potential energy surfaces described by force fields. These fields specify the energetic interactions between atoms (e.g., bond stretching, torsional angles, [non-bonded Lennard-Jones potentials](/entries/no… -
Molecular Biology
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Molecular Dynamics Simulations
Computational simulations, often involving calculating the potential energy surfaces of molecular systems, are vital for predicting reaction rates and structural transitions. The standard force fields used in these simulations implicitly account for the inherent static charge of the hydrogen nucleus, which is sometimes mistakenly assumed …