Cutaway slices the reactor in half. Follow lights up the plasma, the magnets or the neutrons, and Power follows the heat all the way to the lights of a city. The plasma slider sets the temperature, and the scenarios show a start up and a disruption.

The machine is modelled on ITER's published design, at small scale. Fusion power follows the measured deuterium tritium reaction rate at fixed density, tuned so 150 million °C gives ITER's target of 500 MW from 50 MW of heating (Q = 10). Losses are a simple constant confinement time. ITER has not made plasma yet; these are its design goals.

Cutaway slices the engine in half so you can see every passage. Follow lights up one propellant from the tank to the flame.

Throttle and altitude change the chamber pressure and the air outside, which is what shapes the plume and its shock diamonds.

The model is simplified from public photos and diagrams. Thrust and specific impulse follow SpaceX's published Raptor 3 figures (280 tf, 350 s) and mass flow follows from those two. Chamber pressure uses the 350 bar SpaceX has reached in Raptor testing. Everything else is an estimate.

Follow the oxygen or the hot gas through the pump, change the shaft speed, and try a spin start or cavitation. The strobe freezes the blades.

Flow follows the Raptor 3 figures; pressure and power scale with speed squared and cubed from community estimates.

Every drone passes five stations. Add a second robot at the motors station, speed up the frame station, change the buffers between stations or switch on random breakdowns, and watch output, work in progress and lead time.

A small discrete event simulation with fixed cycle times (40, 60, 45, 35 and 30 s) and random failures, running twenty times faster than real time. Lead time uses Little's law: work in progress divided by output.

Cutaway opens the engine. Follow the air around the core, the air through it, the fire, or the two spinning shafts. The afterburner sprays fuel into the exhaust and lights it again.

Modelled on the public outline of the Pratt & Whitney F135 that powers the F-35. Thrust follows the published figures of about 28,000 lbf dry and 43,000 lbf with afterburner; the internal layout, temperatures and fuel flows are estimates.

The view through the portal is traced one ray per pixel through curved spacetime. Mass changes the numbers, not the picture: a black hole looks the same at any size, only the scale changes. Drop a probe to watch time slow at the horizon, or dive in.

Black hole: exact light paths in the Schwarzschild metric (no spin), a thin disk from the innermost stable orbit at three horizon radii, with relativistic Doppler beaming and gravitational redshift. Wormhole: the Ellis metric, a real solution of Einstein's equations that would need negative energy to stay open. Inside the horizon every path ends at the singularity; the jump to another universe in the dive comes from the idealised maths of an eternal black hole (the Einstein Rosen bridge), which closes too fast for anything to cross. Nobody knows what really happens there.

Payload puts a box in its hands. Follow colours every actuator by how hard it is working, traces the power from the battery in the chest, or looks at the hands, whose fingers are pulled by tendons from motors in the forearm.

A general humanoid at human scale, after the public figures for Tesla's Optimus: 1.73 m, a 2.3 kWh battery, about 100 W standing and 500 W walking, and 28 body actuators of six kinds shown at AI Day 2022: rotary joints of 20, 110 and 180 Nm (frameless motor, strain wave gear, crossed roller bearing, encoder, torque sensor) and linear screws of 500, 3,900 and 8,000 N (motor and planetary roller screw with a force sensor). Where each one sits is our best reading of public images; torques, forces and runtime are estimates from simple statics.

X-ray sweeps a scanner over the truck and shows what the steel hides. Follow the energy from the battery to the motors, the motors themselves, or the cast structure. Set a speed, or try a launch and regenerative braking. The truck stays on the dyno; its wheels drive the rollers.

Drawn from public photos at full size (5.68 m long, 3.81 m wheelbase). Mass 3,104 kg, 630 kW from three motors, a 123 kWh pack of 1,344 cells. Power follows air drag (drag area about 1.04 m²), rolling resistance of 1.1% and an 88% efficient drivetrain. Range is at a steady speed from a full pack. Tesla does not publish every detail; the inside layout is simplified.

Cutaway opens the motor across the middle. Current lights each of the 54 slots in the colour of its phase, Field shows the north and south poles the currents make, and Gears opens the two stage gearbox. Regen turns the motor into a generator.

A permanent magnet motor with 54 slots and six poles, geared about 12 to 1 (17/55 then 19/72). Motion is shown about 600 times slower than real so you can follow it. Layout simplified from public teardowns.