๐ชPlanned
N-Body Gravity
Multiple bodies interacting under mutual gravitational attraction โ planets, moons, and chaotic three-body dynamics.
On the workbench
01 ยท Featured
Live now
Earth & Satellite Live
Keplerian Orbit ยท Three.js
A 3D satellite orbiting Earth under true two-body Keplerian mechanics. Adjust semi-major axis, eccentricity, inclination, RAAN, and argument of perigee in real time, and watch live telemetry โ altitude, speed, orbital period, true and mean anomaly โ plus orbit classification from LEO to HEO, a true-scale Sun at 1 AU, and a 9,100-star naked-eye sky.
Keplerian two-body
Real constants ยท GM, Rโ
Live telemetry
Orbit classes LEO โ HEO
True-scale Sun at 1 AU
23.44ยฐ obliquity reference
Launch Earth & Satellite โ
02 ยท More simulations
More simulations
โค๏ธLive
Human Heart โ Blood Flow
A physiologically timed cardiac cycle in an anatomical cutaway โ every chamber, valve, vessel, septum, coronary artery and conduction element named on hover. Wiggers pressures & LV volume, ECG with S1/S2 sounds, and flow that obeys the valves: AV filling in diastole, ejection through the semilunars, coronaries perfusing in diastole.
Launch โ opens in this tab โ
โ๏ธLive
Solar System
A true-scale tour of the planets orbiting the Sun โ real JPL orbital elements, real distances and relative speeds, the Moon and Pluto, and a guided follow-the-planets tour.
Launch โ opens in this tab โ
โกLive
Orbital Railgun
Fire projectiles from a platform in orbit โ choose mass, muzzle velocity, the gun's orbit and launch angles, or click any point on Earth to aim at it โ and watch the result: sub-orbital impact, elliptical orbit, or escape โ with drag, recoil, and the Moon as a target.
Launch โ opens in this tab โ
๐ฐ๏ธPlanned
Orbital Transfers
Hohmann transfers, rendezvous, and ฮv budgets between orbits โ the math behind real spacecraft maneuvers.
On the workbench
๐ฏPlanned
Projectile Motion
Trajectories with drag, wind, and terrain. Adjust launch angle, speed, and environment in real time.
On the workbench
๐ฐ๏ธPlanned
Pendulum Lab
Simple, damped, and driven pendulums with phase-space visualization and energy readouts.
On the workbench
๐Planned
Wave Interference
Slit diffraction and interference patterns from coherent wave sources, rendered live.
On the workbench