Fig. 5From: Microwave detection and quantification of water hidden in and on building materials: implications for healthy buildings and microbiome studiesThin-film interference: the incident microwave will be partially transmitted and partially reflected at each boundary (air-water or water-container) it encounters. The multiple paths taken by the microwave can interfere with one-another, resulting in oscillations in the net transmission and reflection as a function of parameters such as water layer thickness and microwave wavelengthBack to article page