https://phet.colorado.edu


Java Simulations Powered by CheerpJ

Should I use the Java or Java via CheerpJ version of a sim?

All Java via CheerpJ Sims

PhET has partnered with Leaning Technologies to allow our legacy Java simulations to run in a web browser via a technology called CheerpJ. While we are working through the process to publish these browser-compatible simulations to the website, we wanted to provide teachers access to these simulations as soon as they are available.

Note: we’re still working to convert all of our legacy sims to HTML5. To help that effort, please consider Donating Today.

Should I use the Java or Java via CheerpJ version of a sim?

Java

Java via CheerpJ 

Chromebooks

iPads

PC/Mac

Performance and Graphics

Offline Access

Translated Versions

Recommended for

Teacher demonstrations

Screen-casts

Student access

System Requirements

Computers with Java

Detailed system requirements

Internet access

Windows: Chrome, Edge

Mac: Chrome, Safari

Chromebook: Chrome

iPad: Safari (see sim-specific recommendations in subject tables below)

Mobile phones: not recommended

All Java via CheerpJ Sims 

Alpha Decay

Balloons & Buoyancy

Band Structure Note: this sim is not supported on iPad

Battery Voltage

Battery-Resistor Circuit

Beta Decay

Build a Molecule (HTML5 Prototype)

Capacitor Lab Note: Electric Field Detector not supported.

Circuit Construction Kit AC (HTML5 Prototype)

Conductivity

Davisson-Germer: Electron Diffraction This sim will not be supported.

Density (HTML5 Prototype)

Double Wells and Covalent Bonds Note: this sim is not supported on iPad

Eating & Exercise

Electric Field Hockey

Electric Field of Dreams

Energy Skate Park (HTML5 Prototype)

Faraday's Electromagnetic Lab

Fluid Pressure and Flow Note: Hose not supported.

Forces and Motion Note: this sim is not supported on iPad

Forces in 1 Dimension

Fourier: Making Waves Note: Sound not supported.

Gene Machine: The Lac Operon Note: this sim is not recommended on iPad

Generator

Glaciers

Ladybug Motion 2D

Ladybug Revolution

Lasers

Magnet and Compass

Magnets and Electromagnets

Maze Game

Membrane Channels

Microwaves

Models of the Hydrogen Atom

Molecular Motors

Molecule Polarity

Motion in 2D

Natural Selection (Now in HTML5!)

Neon Lights & Other Discharge Lamps

Nuclear Fission

Optical Quantum Control

Optical Tweezers and Applications

Photoelectric Effect

Plate Tectonics - This sim is not compatible with CheerpJ. Donate to help convert to HTML5.

Quantum Bound States Note: this sim is not supported on iPad

Quantum Tunneling and Wave Packets

Quantum Wave Interference

Radio Waves & Electromagnetic Fields

Radioactive Dating Game Note: this sim is not supported on iPad

Ramp: Forces and Motion Note: this sim is not supported on iPad

Reactions & Rates

Reversible Reactions

Salts & Solubility

Self-Driven Particle Model

Semiconductors Note: this sim is not supported on iPad

Signal Circuit

Simplified MRI

Quantum Bound States

Sound - This sim is not compatible with CheerpJ. Donate to help convert to HTML5.

Stretching DNA

Sugar and Salt Solutions

The Greenhouse Effect

The Moving Man

The Ramp

Torque