Molecular Dynamics Simulates the dynamics of atoms and molecules in a two dimension universe
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Molecular Dynamics Description

Simulates the dynamics of atoms and molecules in a two dimension universe Molecular Dynamics is a free software that simulates the dynamics of simple atoms and molecules in a two-dimensional universe. The force between the molecules is weakly attractive at short distances, but strongly repulsive when they touch. Use Molecular Dynamics to explore phases of matter, emergent behavior, irreversibility, and thermal effects at the nanoscale.The following physics elements are presented in the Molecular Dynamics simulation:· The force between the atoms is calculated from the Lennard-Jones formula (truncated at a distance of 3 molecular diameters). This is a reasonably accurate model of the interactions between noble gas atoms.· The simulation uses a natural system of units, with the atomic diameter, the atomic mass, the depth of the Lennard-Jones potential, and Boltzmann's constant all set equal to 1. · The motion of the atoms is governed by Newton's laws, approximated using the Verlet algorithm with the indicated Time step. For sufficiently small time steps, the system's total energy should be approximately conserved.· Atoms drawn in light gray are artifically fixed in space, as if they have infinite mass.· Atoms can also be connected by a bond, drawn as a thin gray line, which creates an attractive spring-like force between them (in addition to the Lennard-Jones force). The spring constant is 5 in natural units. Although this feature allows some interesting qualitative demonstrations, it is not realistic: Actual covalent bonds are thousands of times stiffer.· The walls exert a linear (spring) force on the molecules, with a spring constant of 50 in natural units.· There's also an optional uniform downward force, controlled by the Gravity scrollbar. The magnitude of this force, however, is not meant to be realistic. Earth's gravitational constant is utterly negligible in the units used here (a little over 10-13 for argon).NOTE: In oder to run the Molecular Dynamics simulation you mustdouble click the index.html file located in the archive. Requirements: · Java 1.5 or later

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