Freediving Physics, Put on the Bench

Field notes

The demonstrations are organized as separate labs, with controls named for each model: the buoyancy section includes water type and altitude, while the duck-dive section separates hip flexion, leg lift and kicking. The site also marks limits in its own conclusions: its blood-oxygen model is described as underestimating measured deep-dive lows, and one drag-related result is identified as an analytical derivation without solver code or testing.