PhET Interactive Simulations
Colorado's library of physics, chemistry and maths simulations, used in classrooms everywhere and free to meddle with.
Opens in a new tab. We do not control this site and it may have changed since we catalogued it.
How to get the most from it
PhET Interactive Simulations sits in Science Toys under Learn, filed as coffee break.
- Set aside five to fifteen minutes and give it your proper attention.
- It works on a phone or a desktop, so open it on whatever is nearest.
- It works with the sound off, so it is fine on a train or in a quiet office.
- No account needed — you can start without signing up.
- Go in expecting something brainy, useful and clever.
About this category: Simulations you can meddle with: orbits, evolution, chemistry, cellular automata. Understanding through interference rather than through reading.
Good for
- Filling a coffee break properly
- Giving your brain a workout
- Getting something practical done
- Being impressed by a clever idea
- A quiet break at your desk
- Killing time on your phone
- Trying it with zero commitment
PhET Interactive Simulations: quick answers
Is PhET Interactive Simulations free?
Yes. PhET Interactive Simulations is free to use and needs no account.
Do I need an account to use PhET Interactive Simulations?
No. You can use PhET Interactive Simulations without signing up for anything.
Does PhET Interactive Simulations work on a phone?
Yes. PhET Interactive Simulations works on phones as well as desktop browsers.
Is PhET Interactive Simulations safe for work?
Yes, we file it as safe for work. It also works muted.
How long does PhET Interactive Simulations take?
We file it as "Coffee break": Five to fifteen minutes of proper attention.
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