Cave Dive Physiology Lab: Nitrogen Loading & Air Supply (2D)

This 2D companion trades the 3D version's orbiting cave fly-through for the actual physiology of a cave dive. A Haldane single-compartment model tracks dissolved nitrogen in a representative fast tissue as ambient pressure changes with depth, air consumption scales with that same pressure against a chosen cylinder size and breathing rate, and a live no-decompression-limit countdown is solved directly from the loading equation rather than looked up from a table — set a target depth, a vertical rate and a SAC rate, and watch the tank gauge, the nitrogen-loading strip and the safety banner respond to the same dive in real time.