In this page we present applications and links that are sent by Numerit users. If you have developed an application that you think may interest other Numerit users send it to support@numerit.com. If you also present the application in your own web-site please specify a link to the relevant page.


Doug Arnold, Chief Scientist, Timing, Test and Measurement Division, at Symmetricom, Inc., has sent us two programs.
Click on one of the following links to download a program (if this doesn't let you save the program, right-click on the link and select: Save Target As..., or Save Link As..., or any similar command that your browser provides).

adev1.1.num
This program calculates the Allan Deviation and various other statistics associated with precise frequencies. Version 1.1 adds the new Theo1 statistic devised by scientists at NIST.

pll.num
This program simulates a phase-locked loop with models for reference noise and oscillator instability.


Science Software has sent us the following links:

Celestial Computing with Numerit
Orbital Mechanics with Numerit
The applications and functions in these sites can be used to solve a variety of practical problems in celestial and orbital mechanics.

Numerical Analysis with Numerit
The applications and functions in this site demonstrate a variety of numerical analysis algorithms.


Dr. Uri Levy has developed a series of programs for educational purposes. From time to time we will add more programs to the list. Dr. Levy is Vice President of Optical Networking at LaserComm.
Click on one of the following links to download a program (if this doesn't let you save the program, right-click on the link and select: Save Target As..., or Save Link As..., or any similar command that your browser provides).
Note that some programs can run with the evaluation version of Numerit, but some require the full version or the free NumRun program which allows execution of programs outside the Numerit environment.

turing-sm.nex
This application emulates a Turing Machine that executes user-supplied Turing programs. The user writes the Turing program in Numerit's Input pane and the program's output is displayed in the Document pane.
The Document also includes a short guide that explains how the emulator works and how to write a Turing program.
Note that turing-sm.nex is a Numerit executable and requires the NumRun application. NumRun can be downloaded from the Download page.

rotating charge.num
This application demonstrates the projection of a rotating charge on the vertical axis to generate a sinusoidal motion.

waves.num
This application shows a simulation of wave propagation. In the words of its author: "The math is extremely simple yet the demo is powerful. I am yet to meet the listeners who confront it with silence (as opposed to mumbling "wuuu")."
Note: this program requires the full version of Numerit (or NumRun).

pulse propagation 1.num
This is the first of a two part series about pulse propagation and dispersion. In this part the pulse is constructed by superposition of discrete plane waves.
Note: this program requires the full version of Numerit (or NumRun).

pulse propagation 2.num
This is the second of a two part series about pulse propagation and dispersion. This part presents an optical pulse of continuous spectrum with chromatic dispersion.

stimulated brillouin scattering.num
This application demonstrates the Stimulated Brillouin Scattering effect: a small portion of a propagating light wave is scattered backwards by a sound wave.


Prof. Yaron Silberberg of the Department of Physics of Complex Systems at the Weizmann Institute of Science has sent us a program that shows a simulation of three coupled pendulums.
Click on the following link to download the program (if this doesn't let you save the program, right-click on the link and select: Save Target As..., or Save Link As..., or any similar command that your browser provides).

coupled pendulum.num
The program demonstrates how the energy of the left pendulum can be transferred to the right pendulum through the middle one, yet without ever exciting it to a large amplitude. This mechanical model is equivalent to the process known as STIRAP - for Stimulated Raman Adiabatic Passage - in atomic physics.


Prof. Brian Young has sent us two programs from a series of programs he has written for his Numerit class. Prof. Young is head of the Department of Civil Engineering, PNG University of Technology, Papua New Guinea.
Click on one of the following links to download a program (if this doesn't let you save the program, right-click on the link and select: Save Target As..., or Save Link As..., or any similar command that your browser provides).

ce202 ex2.num
This program simulates an in-coming bomber and a heat-seeking missile that tracks the bomber. Will the missile destroy the bomber?

ce202 ex8b.num
This program is an implementation of the Game of Life. Four groups of nomads set out to cross the Desert and meet up near the center. What happens?