Leiden Classical was a

volunteer computing Volunteer computing is a type of distributed computing in which people donate their computers' unused resources to a research-oriented project, and sometimes in exchange for credit points. The fundamental idea behind it is that a modern desktop co ...

project run by the Theoretical Chemistry Department of the Leiden Institute of Chemistry at

Leiden University Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a Public university, public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William the Silent, William, Prince o ...

. Leiden Classical used the

BOINC The Berkeley Open Infrastructure for Network Computing (BOINC, pronounced – rhymes with "oink") is an open-source middleware system for volunteer computing (a type of distributed computing). Developed originally to support SETI@home, it beca ...

system, and enabled scientists or science students to submit their own test simulations of various molecules and atoms in a

classical mechanics Classical mechanics is a physical theory describing the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars, and galaxies. For objects governed by classical ...

environment. ClassicalDynamics is a program (and with it a library) completely written in C++. The library is covered by the

LGPL The GNU Lesser General Public License (LGPL) is a free-software license published by the Free Software Foundation (FSF). The license allows developers and companies to use and integrate a software component released under the LGPL into their own ...

license and the main program is covered by the

GPL The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general u ...

. The project shut down on June 5, 2018.

Joining the project

Participation was possible via the

manager. Using this software one was once able to create an account in the project. Then someone can make a model of a dynamic system and simulation participating run. There are several models possible, to interactions between molecules or planets.

User Submitted Calculations

To create a personal calculation, a user's model had to have six defined variables: #Colors of the molecules #Box in which the model is run #Number of particles in the simulation #Interaction between the particles ##

Gravity In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the stro ...

Coulomb The coulomb (symbol: C) is the unit of electric charge in the International System of Units (SI). In the present version of the SI it is equal to the electric charge delivered by a 1 ampere constant current in 1 second and to elementary char ...

force ## Lennard-Jones interaction ## Morse interaction ## Rydberg interaction ##Harmonic spirit ##Harmonic bending ##Recurrent torsion interactions #Distance conditions #Confirmation parameter(s)

References

External links

Leiden Classical website archiveLeiden Classical forum archive
Science in society Free science software Volunteer computing projects {{Computing-stub

Joining the project

User Submitted Calculations

See also

References

External links