Interferential fields in a fluid medium

Field interaction between two applied interferential fields has been investigated in a homogenous water medium. Previous published theoretical explanations of interferential beats by Nemec (1967) and Hansjurgens (1974) used very simplistic assumptions for slowly varying fields. This present study describes the expected beating patterns without recourse to oversimplification. At each point in the medium two vector directions (Ω) and magnitudes (R) for 100 per cent beating are predicted to occur. Good agreement (r > 0.93) between predicted and measured values of R and Ω indicated the theoretical approach used was valid and in some cases gives different results than previous field distribution descriptions.