Interactive Sandbox

Build Your Own Experiments

Don't just watch — create. Drag and drop physics objects, set initial conditions, and run your own experiments with real-time data output.

WEBGPU

Classical Mechanics

Drag and drop masses, springs, and ramps. Apply forces, set initial velocities, and watch Newton's laws in action.

F=ma\vec{F} = m\vec{a}
  • Rigid body physics
  • Springs & joints
  • Friction & drag
  • Collision detection
  • Force vectors
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WEBGPU

Electromagnetism

Place charges, wires, and magnets. Visualize electric and magnetic fields in real-time with field lines and vector plots.

F=q(E+v×B)\vec{F} = q(\vec{E} + \vec{v} \times \vec{B})
  • Point charges
  • Current-carrying wires
  • Field line visualization
  • Equipotential surfaces
  • Lorentz force
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WEBGPU

Quantum Mechanics

Design potential wells and barriers. Watch wave functions evolve, tunnel, and interfere in the Schrödinger sandbox.

itΨ=H^Ψi\hbar\frac{\partial}{\partial t}\Psi = \hat{H}\Psi
  • Custom potentials
  • Wave packet propagation
  • Energy eigenstates
  • Probability density
  • Expectation values
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THREEJS

Special Relativity

Set up observers and objects at relativistic speeds. Visualize Minkowski spacetime diagrams and proper time.

ds2=c2dt2+dx2+dy2+dz2ds^2 = -c^2 dt^2 + dx^2 + dy^2 + dz^2
  • Lorentz boosts
  • Spacetime diagrams
  • Proper time
  • Light cones
  • Simultaneity
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WEBGPU

Solid-State Physics

Build crystal lattices atom by atom. Compute band structures, density of states, and electron density maps.

E[ρ]=Ts[ρ]+Vext[ρ]+EH[ρ]+Exc[ρ]E[\rho] = T_s[\rho] + V_{ext}[\rho] + E_H[\rho] + E_{xc}[\rho]
  • Lattice builder
  • Brillouin zone
  • Band structure
  • Density of states
  • Phonon dispersion
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WEBGPU

Thermodynamics

Control temperature, pressure, and volume. Build heat engines, study entropy, and visualize statistical distributions.

dS=δQTdS = \frac{\delta Q}{T}
  • Particle chambers
  • PV diagrams
  • Maxwell-Boltzmann stats
  • Heat reservoirs
  • Entropy tracking
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Sandbox is available on all plans

Free users get limited object count. Pro users unlock unlimited objects, GPU-accelerated compute, and the ability to save and share sandbox states.