Excel Simulation Process Model
The Ejs Circumnavigating Pendulum model displays the dynamics of a mechanical oscillator in uniform circular motion. The mechanical oscillator is free to move in two directions. This 2-dimensional simulation displays all the dynamical features of the Foucault pendulum, except for the dependency...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (37): Circumnavigating Pendulum Model Download |
The Rectangular Well model displays the 2D energy eigenstates of a particle trapped in a very deep two-dimensional rectangular well. Because the Schr?*A*dinger equation for this system is separable into one-dimensional infinite square well Hamiltonians, the solution can be expressed as a product...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 737.28 KB | Download (36): Rectangular Well Model Download |
The Ejs Orbiting Mass on a Table 3D model displays the frictionless dynamics of two masses that are attached via a string through a hole in a horizontal table. Mass m moves on the table in two dimensions while mass M hangs vertically and just moves up and down. The simulation allows displaying...
Platforms: Mac
License: Freeware | Size: 1.67 MB | Download (40): Orbiting Mass on a Table 3D Model Download |
The Heating and Cooling a Cylinder model computes the radial temperature distribution within a long cylinder as it is heated and cooled by a surrounding fluid. The cylinder is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (40): Heating and Cooling a Cylinder Model Download |
The Ejs Duffing Oscillator model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN*x' - x (1 - x2) = f cos(?Ya*t), where each prime denotes a time derivative. The simulation displays the solution as well as the phase space and Poincare plots, and energy diagram....
Platforms: Mac
License: Freeware | Size: 1.37 MB | Download (38): Duffing Oscillator Model Download |
The Heating and Cooling a Sphere model computes the radial temperature distribution within a sphere as it is heated and cooled by a surrounding fluid. The sphere is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial heat equation...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 73.73 KB | Download (36): Heating and Cooling a Sphere Model Download |
The Ejs Foucault Pendulum model displays the dynamics of a Foucault pendulum. The simulation is designed to show the dynamical explanation of why precession of the Foucault pendulum is slower at lower latitudes. The simulation shows simultaneously the motion with respect to the inertial...
Platforms: Mac
License: Freeware | Size: 1.05 MB | Download (36): Foucault Pendulum Model Download |
The Ejs Inertial Oscillation model displays the motion of a particle moving over the surface of an oblate spheroid. The spheroid is flattened to an ellipsoid of revolution because it is rotating, just as the Earth is flattened because it is rotating. The particle is confined to motion along the...
Platforms: Mac
License: Freeware | Size: 1.05 MB | Download (36): Inertial Oscillation Model Download |
The EJS Equinox Precession model illustrates the Copernican theory of Earth's orbit around the sun. The top window shows a view from outside the celestial sphere. The simulation shows the moving Earth along with its axis or rotation and the line of sight from Earth, through Sun, to the Celestial...
Platforms: Mac
License: Freeware | Size: 1.32 MB | Download (35): Equinox Precession Model Download |
The Ejs Coin Rolling without Sliding on an Accelerated Platform model displays the dynamics of a coin rolling without slipping on an accelerated platform. The simulation displays the motion of the coin as well as the velocity vectors for the surface of the coin and the platform. The initial...
Platforms: Mac
License: Freeware | Size: 1.33 MB | Download (35): Coin Rolling without Sliding on an Accelerated Platform Model Download |
The Ejs Quartic Oscillator model displays the motion of a bead moving without friction along a horizontal rod, while tied to two symmetric springs. Both the motion of the masses and the phase space plot are shown in the simulation. The natural length of the springs can be changed via textboxes....
Platforms: Mac
License: Freeware | Size: 1.34 MB | Download (36): Quartic Oscillator Model Download |
The Ejs Keplerian Orbit model displays the dynamics of a mass orbiting a much larger mass subject to Newtonian gravity. The simulation displays the motion of the smaller mass and the effective potential energy diagram. The initial energy of the system can be changed via textbox and the initial...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 1.35 MB | Download (40): Keplerian Orbit Model Download |
The Ejs Group Velocity model displays the time evolution for the superposition of two traveling waves of similar wave numbers and frequencies. The simulation allows an arbitrarily superposition of two waves for the study of group and phase velocity. The amplitude, wave number, and angular...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 1.32 MB | Download (38): Group Velocity Model Download |
The Ejs Waves and Phasors model displays the motion of a transverse wave on a string and the resulting phasors for the wave amplitude. The simulation allows an arbitrarily polarized wave to be created. The amplitude, period, phase velocity and number of phasors displayed can all be changed via...
Platforms: Mac
License: Freeware | Size: 1.32 MB | Download (36): Waves and Phasors Model Download |
The Ejs Two Falling Rods model displays the dynamics of two rods which are dropped on a smooth table. In one case the end point on the table slides without friction, while in the other case it rotates about a pivot point. The simulation allows computing fall times and trajectories. The initial...
Platforms: Mac
License: Freeware | Size: 1.4 MB | Download (36): Two Falling Rods Model Download |
The Ejs Quartic Potential Orbit model displays the dynamics of a mass orbiting a much larger mass subject to a quartic potential, C/r4. The simulation displays the motion of the smaller mass and the effective potential energy diagram. The initial energy of the system can be changed via textbox...
Platforms: Mac
License: Freeware | Size: 1.35 MB | Download (34): Quartic Potential Orbit Model Download |
The Three State Nuclear Decay model extends the Two State Nuclear Decay model to simulate the radioactive decay of atomic nuclei in which the parent nucleus first decays into an intermediate state before decaying into a stable state. Although the decay of both the parent and intermediate nucleus...
Platforms: Mac
License: Freeware | Size: 921.6 KB | Download (35): Three State Nuclear Decay Model Download |
The Three Point Charges is an inquiry-based model for exploring the force between charged objects. Initially, the simulation sets up three charged objects, one at each corner of an equilateral triangle. The charges have different magnitudes, represented by force vectors. The charges can be moved,...
Platforms: Mac
License: Freeware | Size: 102.4 KB | Download (34): Three Point Charges Model Download |
This interactive simulation allows students to collide two objects and investigate whether momentum and/or kinetic energy are conserved in the collision process. To keep things simple, the simulation involves an isolated system where the objects collide along a single line. Use the sliders to set...
Platforms: Mac
License: Freeware | Size: 1.32 MB | Download (35): One Dimensional Collision Model Download |
The Ejs Great Circles model displays the frictionless motion of a particle that is constrained to follow the surface of a perfect sphere. The sphere rotates underneath the particle, but since there is no friction, and the sphere is perfectly spherical, the motion of the particle is not influenced...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (35): Great Circles Model Download |