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Physics Education Technology - University of Colorado, Boulder
PhET Blog

Archive for the ‘New Sims ’ Category

HTML5 Balloons and Static Electricity

Balloons and Static Electricity

Have you tried our new HTML5 version of Balloons and Static Electricity?

Why does a balloon stick to your sweater? Rub a balloon on a sweater, then let go of the balloon and it flies over and sticks to the sweater. View the charges in the sweater, balloons, and the wall.


Sep 19


Now Available New HTML5 Gravity Force Lab

Gravity Force Lab

Try the new next-gen version of our popular Gravity Force Lab — now for touch and tablets! With a touch of your finger, experience how the gravitational force that two objects exert on each other changes as you alter their properties. What happens as you increase the mass of the objects? What happens as you move them farther apart?


Aug 24


Next-Gen HTML5 Sims Now Live! (And, new logo, too)

New HTML5 Sims

We are so excited to release our next-gen HTML5 sims—just in time for the 2013-2014 academic year! These HTML5 versions not only are touch and tablet optimized but also have built-in flexibility that will enable us to easily facilitate future improvements, including enhanced 3rd-party customization and assessment abilities.

To learn about the new features, and the Future of PhET, watch the video on the right-side of the new (and temporary) “HTML5 HomePage”. The video gives tips on how to use the sims, as well as a glimpse to see what’s coming.

Do you like our new logo? We hope that the new logo reflects our mission to advance science and math literacy worldwide by making STEM active, engaging and most of all, fun!

And, if you’d like to support our next-gen sims, Donate today!
P.S. We are working on updating the logo on our donation page.


Aug 17


Teaching Chemistry? Try Our New Sim Alignment Guide


Teaching chemistry? To help you find the best simulation for teaching a specific topic in chemistry, we’ve put together this new preliminary guide that gives you a line up of specific simulations (and supplemental simulations) for topic areas in the general chemistry curriculum.

Want to share suggestions of other PhET sims you use for teaching chemistry topics? Let us know at the PhET Help Desk at


May 29


Improved Fluid Pressure and Flow

Fluid Pressure and Flow

A big Shout Out to Bernard LaCour who pointed out a bug in Fluid Pressure and Flow. As soon as we heard about the problem, we addressed the issue and posted the fix. We know how important it is to correct any issue with our simulations. So if you find a problem, please let us know through the PhET Help Desk at

Thank you Bernard!


May 16


Snell’s Law and Bending Light Activities

Bending Light

With Spring finally here and rainbows soon to follow, explore PhET’s Bending Light simulation and learn why rainbows are ROYGBIV.


May 10


New Simulation: Energy Forms and Changes

Energy Forms and Changes

We’re excited to add our last Java-based simulation, Energy Forms and Changes. Explore how heating and cooling iron, brick, and water adds or removes energy. See how energy is transferred between objects. Build your own system, with energy sources, changers, and users. Track and visualize how energy flows and changes through your system.


Apr 24


PhET’s Progress on iPad Compatibility

We’ve been busy working on making our simulations iPad compatible. We hope to have a number of them ready over the summer so they will be available for the 2013-2014 school year, including Build an Atom, Concentration, and Ohm’s Law.

Right now user donations are our key source of funding towards converting simulations to HTML5 and bringing them to iPad and Android tablets.

So please consider donating today. And, thank you to those of you who have already donated. Your support will help keep our work funded through the summer.

Donate Now to help support iPad compatibility!


Apr 12


Teaching Modern Physics? Try PhET’s Photoelectric Effect

Photoelectric Effect

In the middle of modern physics? Try our “Intro to Photoelectric Effect Interactive Lecture.” These lecture notes include many concept questions and an interactive lecture demo, for a 2-3 day introduction to the Photoelectric Effect.


Apr 8


Learn What Goes Into the Creation of a PhET Simulation


Ever wonder how a new simulation is created? In this new video PhET: Research and Development, you can see what’s behind the development of a PhET simulation and how we use research to enhance learning. Learn how we choose what topic to address, all the way through to how we test our simulations.


Mar 27