Physics

Things have weight. Write how each starts, moves and settles.

Writing physics [official guidance; hair, cream and skin have no top-creator source yet]:

• Weight and ease: every move gathers, travels and settles ("the glass lands and the tea rocks once"). One even speed reads animated.

• Materials as cause and effect: hair lands a beat after the head; a mechanism is how it sits at the start, then the one part that moves.

• A product's body, written positively ("a thick gel that holds a peak"). "Never drips" doesn't stop it.

• Falls in real time, with distance and duration. Speeds in km/h; haze as visibility distance; vapour only from a named source; scale by human height.

• Gradual states as start, during and end.

• Cadence per capture: a 180-degree shutter for crewed and documentary captures; a phone's own crispness. Never "no blur" on action.

• A break without a blow [best available, not yet validated; written for Seedance 2.0]: the crack starts at the stressed edge. Name no strike point.

Sources

• Higgsfield's realism guide and movement guide; Luma's guide.