Module 05 · Measurement & validation

Validation Lab

Digital twins of the measurement procedures. Enter or upload readings, let the platform reduce the data, fit the constants and issue a pass/fail against specification — the same workflow used for incoming QC and calibration certificates. Batch tools apply the engines to whole site surveys.

Lab use cases
Procedure

Numerical aperture of an optical fibre

  1. Couple the diode laser into the fibre and confirm light at the far end.
  2. Mount the output end in the chuck facing the graduated screen.
  3. Adjust distance L until the spot has a convenient diameter D; record D and L.
  4. Repeat for several distances; θ₀ = tan⁻¹(D/2L), NA = sin θ₀; average.
Analysis
Procedure

Planck's constant and cathode work function

  1. Place a filter in front of the white-light source; note its wavelength and compute f = c/λ.
  2. Increase the retarding voltage until the photocurrent is zero: that is V₀.
  3. Repeat for each filter; plot V₀ against f.
  4. Slope = h/e → h = slope × e; f-intercept = f₀; φ = hf₀.
Analysis
Procedure

Heisenberg's principle from single-slit diffraction

  1. Laser through an adjustable slit of width a onto a screen at distance D.
  2. Measure the width Δy of the central bright fringe.
  3. Half-angle to the first minimum θ = (Δy/2)/D; Δx = a, Δp = p·θ with p = h/λ.
  4. Repeat for several slit widths; Δx·Δp ≈ h ≥ h/4π.
Analysis

Each experiment runs on the platform's state-vector simulator with 1024 shots and fills in the observation sheet automatically.

Plant fibre routes → link budgets

Batch fibre link verification

CSV columns: route, fiber_type, length_km, connectors, splices, wavelength_nm, attenuation_db_km, bitrate_gbps

Template
Substation IR survey → severity

Batch thermal-imaging classification

CSV columns: asset, component, temperature_C, reference_C, emissivity, ambient_C

Template