Forces and Motion
Push, pull, slide and crash. Discover friction, speed and Newton's laws.
Your free virtual physics lab
Push, pull, spark, bounce and shine. Play with hands-on physics experiments right in your browser, with the equations worked out live beside every simulation. No sign-up, no downloads.
Choose a topic to explore
Gravity and Space
Weigh yourself on Mars, drop feathers on the Moon and launch satellites.
Magnets and Electromagnets
See invisible magnetic fields, build electromagnets and make a motor spin.
Electricity and Circuits
Build circuits, light bulbs and learn Ohm's law without any shocks.
Light and Optics
Bounce lasers off mirrors, bend light through water and make rainbows.
Sound and Waves
Make music, find echoes like a bat and hear the Doppler effect.
Energy
Design roller coasters, power a town and see energy change form.
Learn physics by doing
Physics makes the most sense when you can try things yourself. Every PhysicsFella lab lets you change one thing at a time, such as the mass of a box, the angle of a mirror or the number of batteries in a circuit, and see what happens straight away.
Younger explorers can predict and play. Older students can switch on the equations, take measurements and draw graphs, just like in a real school lab. PhysicsFella covers the core physics topics taught to students aged roughly 9 to 16 around the world.