The Bell Jar Summary
C4F Textarea Toolbar is a plugin for WordPress aimed at providing a simple yet very useful and precise tool to insert emoticons and markup in the comments' textarea. The javascript code used has been written to specifically address most (if not all) flaws in the interpretation of cursor position...
Platforms: PHP
License: Freeware | Size: 20.48 KB | Download (40): C4F Textarea Toolbar Download |
This module uses a SOAP interface to request weather data from the U.S. NOAA National Weather Service. The module displays summary forecast data (high temperature, low temperature, expected conditions, weather icon) and provides an API for retrieving other weather information based on published...
Platforms: PHP
License: Freeware | Size: 20.48 KB | Download (49): U.S. National Weather Service (NOAA NWS) U.S. weather forecast block Download |
The Tracker Sampler Package contains several video analysis and modeling experiments from mechanics to spectroscopy. It is distributed as a ready-to-run (compiled) Java archive containing Tracker (video analysis and modeling tool), movies, and some initial analysis. Double clicking the...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 8.2 MB | Download (40): Tracker Video Analysis Demo Package Download |
The Tracker Air Resistance Model asks students to explore air resistance of falling coffee cups by considering both viscous (linear) and drag (quadratic) models. Students see a video of falling cups and explore dynamical models that are overlayed on the video. It is distributed as a ready-to-run...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 4.1 MB | Download (40): Tracker Video Analysis: Air Resistance Download |
The EJS Linear Charge Gauss's Law model shows a Gaussian surface and allows for the measurement of the charge enclosed and surface area of the surface. Users can change the radius of the linear charge as well as the size of the Gaussian surface. Users can modify this simulation if Ejs is...
Platforms: Mac
License: Freeware | Size: 1.39 MB | Download (42): Linear Charge Gauss's Law Download |
The EJS Faraday Loop Changing Field Model shows the induced emf in a changing external magnetic field. You can control the frequency, magnitude and type of variation in the external field as you would in the laboratory when using a function generator to produce current in a large coil. You can...
Platforms: Mac
License: Freeware | Size: 983.04 KB | Download (40): Faraday Loop in Changing Field Download |
The Double Slit Wave-Particle Duality Model demonstrates how matter and light display both wave- and particle-like properties in single and double slit experiments. The simulation shows a detector screen placed behind an aperture with one or two open slits. Particles (electrons or photons) pass...
Platforms: Mac
License: Freeware | Size: 757.76 KB | Download (42): Double Slit Wave-Particle Duality Model Download |
The Levenberg-Marquardt Fitting of Nuclear Decay Model demonstrates how EJS can be used to fit experimental data. In this simulation, nuclear decay data are used to provide a simple example, but this same process can be applied to any type of data. The sum of squared deviations is minimized but...
Platforms: Mac
License: Freeware | Size: 849.92 KB | Download (39): Levenberg-Marquardt Fitting of Nuclear Decay Model Download |
The Wang-Landau algorithm, also called the flat-histogram algorithm, can be used to calculate the density of states of a microscopic system. In this simulation, the Wang-Landau algorithm is used to calculate the density of states for a two-dimensional Ising ferromagnet with periodic boundary...
Platforms: Mac
License: Freeware | Size: 1.31 MB | Download (41): Wang-Landau Simulation Download |
This applet calculates the siderial time and value to select on the TAL scope RA scale. Just enter your local longitude (eastern longitudes are negative) and the RA hours and minutes of the star you want to look at. Click on the run button, or wait a few moments. The applet has a timer, which...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 573.44 KB | Download (33): Siderial Time Calculator Download |
The JPList project provides a Java library to parse and build ASCII Property lists to and from Java objects. The design of the API is heavily influenced by the JDOM API, which provides a library to parse and build XML documents to and from JDOM Document objects. However, the JPList API is...
Platforms: Mac
License: Freeware | Size: 40.96 KB | Download (37): JPList Download |
The QM Momentum Carpet program displays the time evolution of the position-space wave function and the associated quantum-mechanical momentum-time diagram, the momentum-space quantum carpet. The default wave function is a Gaussian wave packet in an infinite square well. Additional states and...
Platforms: Mac
License: Freeware | Size: 71.68 KB | Download (36): QM Momentum Carpet Download |
The Circular Well Superposition simulation displays the time evolution of the position-space wave function in an deep 2D circular well. The default configuration shows the first excited state with zero angular momentum. Additional eigenstates can be added using a button in the eigenstate...
Platforms: Mac
License: Freeware | Size: 1.5 MB | Download (38): Circular Well Superposition Model Download |
The Diffusion Limited Aggregation in Continuous 2D Space Model simulates the formation of a cluster using a random-walk process called "diffusion limited aggregation" (DLA). The cluster formed by this process is an example of a fractal, and the simulation can be extended to calculate and analyze...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 778.24 KB | Download (32): Diffusion Limited Aggregation in Continuous 2D Space Model Download |
The EJSMagnetic Field from Loops model computes the B-field created by an electric current through a straight wire, a closed loop, and a solenoid. Users can adjust the vertical position of the slice through the 3D field. The Magnetic Field from Loops model was created using the Easy Java...
Platforms: Mac
License: Freeware | Size: 1.76 MB | Download (33): Magnetic Field from Loops Model Download |
The EJS Cellular Automata Rules Model shows a spatial lattice which can have any one of a finite number of states and which are updated synchronously in discrete time steps according to a local (nearby neighbor) rule. You can change the lattice size, pick different rules (0 to 255 as classified...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 1.3 MB | Download (35): Cellular Automata Rules Model Download |
The Lagrangian Pendulum Spring model asks students to solve the Lagrangian for a spring-pendulum and then develop a model of it. It is distributed as a ready-to-run (compiled) Java archive. Double-clicking the ejs_CM_Lagrangian_pendulum_spring.jar file will run the program if Java is installed....
Platforms: Mac
License: Freeware | Size: 1.3 MB | Download (34): CM Lagrangian Pendulum Spring Model Download |
The STP SecondVirialCoefficient program numerically evaluates the second virial coefficient for the Lennard-Jones potential at various temperatures. The default is temperature range is 0.5 to 5. STP SecondVirialCoefficient is part of a suite of Open Source Physics programs that model aspects of...
Platforms: Mac
License: Freeware | Size: 776.19 KB | Download (35): Second Virial Coefficient Download |
The STP XY Model program implements a Monte Carlo simulation of the planar ferromagnet or XY Model of spins on a lattice. The simulation returns the configuration of spins with the option of showing the vortices. The default system is a lattice of linear dimension L = 20 at temperature T = 0.89....
Platforms: Mac
License: Freeware | Size: 489.47 KB | Download (40): XY Model Download |
The QM Probability program displays the time evolution of the position-space wave function and the associated probability density. The default wave function is the n = 5 state in a ramped infinite square well. Additional states and other potential energy functions can be specified using the...
Platforms: Mac
License: Freeware | Size: 51.2 KB | Download (34): QM Probability Download |