Freedom251 › Physics Simulation Software
oPhysics
What oPhysics is
oPhysics is a free web collection of interactive physics simulations covering kinematics, forces, conservation, waves, light, electromagnetism, rotation, fluids and modern physics. Kinematics activities let students adjust initial position, initial velocity and acceleration, then observe resulting motion graphs. Other activities provide conceptual questions and practice tasks, including projectile motion and vector addition. Sliders, checkboxes and buttons control variables and allow activities to run, pause or reset. The site also includes drawing tools, a graph maker and four-option multiple-choice graphs. Its lesson library includes assessment activities and 3D visuals, but it does not provide authoring tools. oPhysics says its interactive simulations and most animated illustrations were created with GeoGebra. Creator Tom Walsh says he made the site’s content. The site permits non-profit educational use and describes development as ongoing. Homepage updates listed for March 2025 include simulations about density, buoyancy, rotation and fluids. No product plans or prices are listed, though a donation link is provided.
Who it suits
oPhysics suits students and educators seeking browser-based physics demonstrations, variable-based exploration and practice activities. Its non-profit permission also supports educational use.
What it does well
- Covers nine major physics topic areas
- Interactive controls change model variables
- Includes conceptual and practice activities
- Provides assessment tools and 3D visuals
- Permits non-profit educational use
What to know first
- No authoring tools
- Development remains a work in progress
- Content updates listed through March 2025
- No product plans or prices listed
Verdict
oPhysics offers a broad browser simulation library for physics learning and practice. Its adjustable models, questions and graph tools support exploration, while the site’s ongoing development means coverage continues to evolve.
Facts from oPhysics's own pages
- Adjustable models
- The kinematics simulations let students adjust variables such as initial position, initial velocity, and acceleration and observe effects on motion graphs. · ophysics.com, 9 Oct 2026
- Assessment tools
- Yes · ophysics.com, 20 Sept 2026
- Audience
- The kinematics page describes its simulations as intended to help students understand physics concepts. · ophysics.com, 9 Oct 2026
- Authoring tools
- No · ophysics.com, 20 Sept 2026
- Creator
- Tom Walsh says he created all of the content on the site. · ophysics.com, 9 Oct 2026
- Delivery mode
- web · ophysics.com, 20 Sept 2026
- Development status
- The site describes itself as a work in progress, with content added as time allows. · ophysics.com, 9 Oct 2026
- Educational permission
- The site permits use of its content for non-profit educational purposes. · ophysics.com, 9 Oct 2026
- Free plan
- Yes · ophysics.com, 20 Sept 2026
- Integration
- The site says most animated illustrations and all interactive simulations were created using GeoGebra. · ophysics.com, 9 Oct 2026
- Interactive content
- The site says all its interactive simulations were created using GeoGebra. · ophysics.com, 9 Oct 2026
- Interactive controls
- Simulation pages describe controls such as sliders, checkboxes, and buttons for adjusting variables and running, pausing, or resetting activities. · ophysics.com, 9 Oct 2026
- Latest listed updates
- The latest updates listed on the homepage are dated March 2025. · ophysics.com, 9 Oct 2026
- Learning activities
- The site includes labs, tutorials, practice activities, and quizzes, including a rotational inertia lab with three scenarios. · ophysics.com, 9 Oct 2026
- Lesson library
- Yes · ophysics.com, 20 Sept 2026
- Other tools
- The site includes drawing tools, a graph maker, and four option multiple choice graphs. · ophysics.com, 9 Oct 2026
- Permissions
- The site permits use of its content for non-profit educational purposes. · ophysics.com, 9 Oct 2026
- Pricing
- The site provides a donation link but lists no product plans or prices. · ophysics.com, 9 Oct 2026
- Product
- oPhysics is a collection of interactive physics simulations. · ophysics.com, 9 Oct 2026
- Recent additions
- The latest updates listed on the home page are dated March 2025 and include simulations about density, buoyancy, rotation, and fluids. · ophysics.com, 9 Oct 2026
- Support
- Tom Walsh invites feedback and suggestions for new simulations by email at [email protected]. · ophysics.com, 9 Oct 2026
- 3D visuals
- Yes · ophysics.com, 20 Sept 2026
- Topics
- The site organizes simulations in topics including kinematics, forces, conservation, waves, light, electromagnetism, rotation, fluids, and modern physics. · ophysics.com, 9 Oct 2026
- What it is
- oPhysics is a collection of interactive physics simulations. · ophysics.com, 9 Oct 2026
Where oPhysics stands on Freedom251
- Physics Simulation Software#73 of 89