Chemotaxis Source Factor Depth Scans

Drift Run-Length Source Scan

longer biased runs raise drift

Fixed counts and timing isolate run length as the source factor for drift speed. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Six-metre runs give one half metre per second drift

Hold counts at 5 forward and 3 backward runs. Run length 6 m gives net displacement 12 m. Total time stays 24 s.

12/24=1212/24=\frac{1}{2}
Drift run-length source scan rowVisible labels show the checked run length, net displacement, and total time.drift speedrun 6 mnet 12 mactive 16 stotal 24 s

Twelve-metre runs give one metre per second

Run length 12 m gives net displacement 24 m over 24 s, so drift is 1 m/s.

24/24=124/24=1
Drift run-length source scan rowVisible labels show the checked run length, net displacement, and total time.drift speedrun 12 mnet 24 mactive 16 stotal 24 s

Eighteen-metre runs give three halves metre per second

Run length 18 m gives net displacement 36 m and drift 3/2 m/s. This remains a deterministic count-and-time ledger.

36/24=3236/24=\frac{3}{2}
Drift run-length source scan rowVisible labels show the checked run length, net displacement, and total time.drift speedrun 18 mnet 36 mactive 16 stotal 24 s