Time to experiment.

A / 0.7 mB / 1.4 m θ(t)
4 science subjects · 80 experiments · No installation or sign-upExplore experiments
02 / CHEMISTRY

One change.
A visible difference.

How much faster does a reaction become when you turn up the temperature? Watch the particles change as the concentration curve falls.

Try changing things before memorizing the numbers. Start with the same conditions and change one variable to see what makes the difference.

Explore reaction rates
AB[A]₀ = 1 mol/L0 s120 s
03 / BIOLOGY

Follow the motion.
Find the hidden pattern.

Particles gradually spread out from a crowded side. Each particle moves randomly, yet together they form a pattern as the concentration difference decreases.

Observe, predict, and compare the scene with its measurements. Discover how small movements add up to a larger pattern.

Explore diffusion
LR
04 / EARTH SCIENCE

Think bigger.
Explore on your screen.

Faster near the Sun, slower farther away. Follow the planet along its elliptical orbit and observe the relationship between position and speed.

From a solar system that will not fit on your desk to particles too small to see. Start experimenting on a computer, tablet, or phone, with nothing to install.

Explore planetary orbits
a = 1 AUT = 1 yr

Every discovery starts with a question.

Start with a subject that interests you

PhysicsPhysics

Force and motion, waves, electricity and magnetism, light. Check the rules by which the world operates through simulation.

MechanicswaveelectromagneticOptics

ChemistryChemistry

Atoms and molecules, chemical reactions, acids and bases. You can safely mix even dangerous reagents.

atomic structurechemical reactionacid/basegas

BiologyBiology

Cells, genetics, ecosystem, our body. Observe invisible life phenomena.

cellGeneticsecosystemanatomy

Earth scienceEarth Science

Plate tectonics, weather, phases of the moon, planetary motion. View the large flow of the Earth and the universe in miniature.

GeologyAir/OceanAstronomyuniverse