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 ...
project run by the Theoretical Chemistry Department of the Leiden Institute of Chemistry at
Leiden University
Leiden University (abbreviated as ''LEI''; ) is a Public university, public research university in Leiden, Netherlands. Established in 1575 by William the Silent, William, Prince of Orange as a Protestantism, Protestant institution, it holds the d ...
. 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 became the ...
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 Theoretical physics, physical theory describing the motion of objects such as projectiles, parts of Machine (mechanical), machinery, spacecraft, planets, stars, and galaxies. The development of classical mechanics inv ...
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 project shut down on June 5, 2018.
Joining the project
Participation was possible via 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 became 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 (), also known as gravitation or a gravitational interaction, is a fundamental interaction, a mutual attraction between all massive particles. On Earth, gravity takes a slightly different meaning: the observed force b ...
##
Coulomb
The coulomb (symbol: C) is the unit of electric charge in the International System of Units (SI).
It is defined to be equal to the electric charge delivered by a 1 ampere current in 1 second, with the elementary charge ''e'' as a defining c ...
force
##
Lennard-Jones interaction
##
Morse interaction
##
Rydberg interaction
## Harmonic spirit
## Harmonic bending
## Recurrent torsion interactions
# Distance conditions
# Confirmation parameter(s)
See also
*
List of volunteer computing projects
This is a comprehensive list of volunteer computing projects, which are a type of distributed computing where volunteers donate computing time to specific causes. The donated computing power comes from idle CPUs and GPUs in personal computers, vide ...
References
External links
Leiden Classical website archiveLeiden Classical forum archive
Science in society
Free science software
Volunteer computing projects
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