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Two metal electrodes approach each other on a dark background until a brief electric spark jumps the gap. A sharp dry crack sounds at the exact moment of the spark.

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Per-prompt rubric

Basic standards

Visual presence

  • two metal electrodes
  • an electric spark

Event: an electric spark jumps between two electrodes

Audio presence

  • an electric spark

Sound: an electric crack

Key standards

Visual physical commonsense (V-PC)

  • Two visible metal electrodes approach each other against a dark background until a brief electric spark visibly jumps the gap with physically plausible discharge geometry.

Audio physical commonsense (A-PC)

  • The audible crack has the sharp dry snapping character of a real electrical discharge.

Cross-modal physical commonsense (AV-PC)

  • The audible crack onset coincides in time with the visible moment the spark jumps the gap.
  • The approach phase before the spark is audibly silent.