Thermal-camera fusion reactor explainer

A 40-second vertical fusion reactor explainer: a glossy tokamak read through heat windows. Copy it into Claude and swap in your own lines and numbers.

A black-oxide tokamak stands on a grey studio seamless, its plasma already blazing violet inside. Flat gradient windows slide over the cuts and recolour the frame: magnets read deep blue, plasma white-hot. Four ideas follow in order: fuel from seawater, magnetic confinement, fusion itself and heat out to a turbine.

Rewrite the magnet and plasma readouts, the seawater, home, fusion and closing lines, and the lab brand. Adjust magnetic field and plasma current, and recolour the plasma violet and thermal hot and cold. At 40 seconds in 9:16, it suits energy start-ups, science channels and Shorts or Reels.

Use it for

Thermal-camera fusion reactor explainer: A black-oxide tokamak stands on a grey studio seamless, its plasma already blazing violet inside

Specs

What happens, beat by beat

  1. 0-2 s HOOK. 3/4 high orbit pushing in on the intact ring of 18 coils, the plasma already blazing violet inside with the vessel hidden (X-ray). A window wipes over one coil with [cold readout: MAGNETS…
  2. 2-4.5 s. Low camera tracking along the outer coil legs; a split window covers the right of the frame below the top band, its edge drifting left as the camera moves.
  3. 4.5-7.5 s GLASS. Macro on a tall glass of seawater on the seamless, faint deuterium motes rising and dissolving below the surface. [line 1: 1 LITRE OF SEAWATER] at 5.0 s.
  4. 7.5-10.5 s CITY. Night: a black skyline model of glossy towers behind the glass. At 8.6 s one window snaps on warm, spilling light onto its facade. [line 2: ≈ 1 HOME, 1 YEAR] at 8.45…
  5. 10.5-13 s TUNNEL. Inside the vessel along the tiled first wall; a small ice-blue deuterium sphere and amber tritium sphere float near the lens with pinned labels.
  6. 13-15.5 s IGNITE. From the outer wall looking along the ring: hundreds of motes accelerate toroidally into curved streaks and gather into a spinning violet ribbon that lights the walls.
  7. 15.5-18.5 s FIELD. 3/4 into a 110 degree cutaway; 16 helical field lines draw themselves around the plasma.
  8. 18.5-23 s FUSE. Studio macro: D (proton + neutron) and T (proton + 2 neutrons) accelerate together; at 20.5 s a 3-frame white flash and a shock ring, He-4 recoils slowly, the neutron leaves 4x faster…
  9. 23-29.5 s WOBBLE + CORRECT. Face-on to the cut D section, one continuous push. The plasma kinks upward, touches the top wall at 25.4 s (orange flare, sparks); at 26.6 s the outer coils pulse blue…
  10. 29.5-31.5 s BLANKET. Neutron streaks cross the gap and spark on the wall; the blanket heats orange.

Materials and light

How the prompt opens

Make a 40-second, 9:16 (1080x1920), 30 fps motion explainer of a tokamak fusion reactor, built in Three.js with real proportions. A glossy black-oxide machine sits on a soft grey studio seamless, and flat gradient rectangles slide over the frame on the cuts like a thermal camera, re-colouring whatever is behind them: the magnets read deep blue, the plasma white-hot. Four ideas in order: fuel from seawater, a plasma held by magnets, fusion itself, heat out to a turbine. It ends on [your brand: e.g. an invented fusion lab called SOLACE]. Swap in your own lines, numbers and colours.

The full prompt runs 1,099 words. Copy it free (2 a day) from this page.

Copy the prompt into Claude, or pull the scene into Claude Code and render the MP4 on your machine: how it works.

More explainers scenes