Physical Transformation AtlasPTA
Pathway · p-7cd70dbcc2 · extends a recorded pathway

Gravitational potential difference → Electrical work

Gravitational potential differenceGravitational descent of fluidBulk fluid flowOcean wave motionPressure gradientStreaming potentialIonic currentElectrical work

Epistemic state of the route

known constituent relations
7 / 7 established or replicated · weakest constituent established
constituent maturity floor
K4 · experimentally observed
search for this exact route
Not assessed — complete composition not searched.
recorded-pathway overlap
shares its closing relations with Electrokinetic microchannel generator · 3/7 relations shared
route-level evidence
0 sources for the complete composition · 6 cited by the constituent steps
boundaries and interfaces
BOUNDARY compatible · no region transition

Explorematrix context · physics checks · steps · route evidence · constituent evidence · cite

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

D.19 × C.24 · Gravitational potential difference × Turbomachineryfamily: TurbomachineryD.19 × C.23 · Gravitational potential difference × Electrokineticfamily: Electrokinetic

Typed bounds on this route

Every limit the atlas holds for this route, as constraint records: reached through bounded_by claims on the route's own entities. Hard bounds (an upper bound or a formula) decide the thermodynamic-bound check above; benchmarks, constitutive relations and resource limits are listed and never decisive. No prose limit exists anywhere (pass 42).

  • Onsager–Casimir reciprocity · constitutive-relation · listed, never decisive
    L_ij(B) = ε_i ε_j L_ji(−B): the cross-coefficients of coupled linear transport are equal up to the time-reversal parities ε of the variables and reversal of the magnetic field; L_ij = L_ji is the zero-field, even-parity case

Steps

  1. 01
    gravitational → mechanical
    liquid
    refs [1]
  2. 02
    mechanical → kinetic
    refs [1]
  3. 03
    kinetic → mechanical · loss to thermal
    • wind fetch over open water
    liquid
    refs [2] [3]
  4. 04
    mechanical → mechanical
    refs [2] [3]
  5. 05
    mechanical → electrical · loss to thermal
    • electrolyte forced through a channel with charged walls; efficiency peaks when the Debye length is comparable to the channel width
    aqueous medium required · bulk flow required
    refs [4] [5]
  6. 06
    electrical → electrical
    refs [4] [5]
  7. 07
    Ionic current —converts into→ Electrical workestablishedclaim record
    electrical → electrical · loss to thermal
    • electrodes exchange the ionic current for an electronic current through the external load
    refs [6]

Evidence for the complete composition · 0

No source on record for this exact composition. The sources below support the individual steps, not the route as a whole.

Evidence for the constituent relations · 6

  1. [1]
    S. L. Dixon, C. A. Hall. Fluid Mechanics and Thermodynamics of Turbomachinery (7th ed.) (2014)
    Butterworth-Heinemann · doi:10.1016/C2011-0-05059-7 · crossref ✓ 2026-09-19 · record
  2. [2]
    S. H. Salter. Wave power (1974)
    Nature 249, 720–724 · doi:10.1038/249720a0 · crossref ✓ 2026-09-19 · record
  3. [3]
    J. Falnes. Ocean Waves and Oscillating Systems: Linear Interactions Including Wave-Energy Extraction (2002)
    Cambridge University Press · doi:10.1017/CBO9780511754630 · crossref ✓ 2026-09-19 · record
  4. [4]
    J. Yang et al.. Electrokinetic microchannel battery by means of electrokinetic and microfluidic phenomena (2003)
    Journal of Micromechanics and Microengineering 13, 963 · doi:10.1088/0960-1317/13/6/320 · crossref ✓ 2026-09-19 · record
  5. [5]
    R. J. Hunter. Zeta Potential in Colloid Science: Principles and Applications (1981)
    Academic Press · doi:10.1016/C2013-0-07389-6 · crossref ✓ 2026-09-19 · record
  6. [6]
    A. J. Bard, L. R. Faulkner. Electrochemical Methods: Fundamentals and Applications (2nd ed.) (2001)
    Wiley · book, no DOI · record

Cite this route

Physical Transformation Atlas (2026). route p-7cd70dbcc2: Gravitational potential difference → Gravitational descent of fluid → Bulk fluid flow → Ocean wave motion → Pressure gradient → Streaming potential → Ionic current → Electrical work. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/7cd70dbcc2

Ids and matrix addresses are stable across revisions; the revision hash identifies the exact canonical files the record was compiled from and is meta.data_hash in every /api export. Reuse terms: see the license field in any export.