Assertion: wave's wavelength | /r/HasProperty | less than 0.4 cm
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Source sentences:
text: For a water–air interface (with σ = 0.074 N/m and ρ = 1000 kg/m³) the waves can be approximated as pure capillary waves – dominated by surface-tension effects – for wavelengths less than 0.4 cm (0.2 in).