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Table 1 Summary of distances and values valid for the experimental set-up

From: Non-invasive monitoring of hydraulic surge propagation in a wounded tobacco plant

Quantity Value Description
z 1 8 mm Distance between the stem and the point light source [12]
z 2 297 mm Distance between the stem and the screen [12]
Δx 229 mm (for the stem width = 6 mm) Width of the geometrical shadow [12]
Δp 5.2 μm Camera pixel size
N 7 pixels Response of a fringe position to the stem margin shift by 1 μm
C 38.125 Sensitivity of the optical set-up