Introduction and History Electromagnetic Wave Propagation
Wavelength
![[Under Construction]](images/undercon.gif){kind=small}
The wavelength is the spatial distance traversed by one period (or cycle) of the propagating electromagnetic wave. The wavelength is the velocity of propagation in the material divided by the frequency of the propagating wave. Thus (assuming the magnetic properties of vacuum), 300 MHz is a wavelength of 1 meter in air, or about 0.5 m in dry sand with a relative dielectric permittivity of 4, or about 0.2 m in water saturated sand. In general, a contrast in properties has to occur over a size bigger than 1/3 of a wavelength to be observable (though 1/10 wavelength is possible under exceptional circumstances)(see resolution).
(figure of wavelength)
(period)
Rocks, Soils and Fluids: Electrical Properties Magnetic Properties
Environmental Influences Heterogeneity, Anisotropy and Scale Radar Equation
Scattering Polarization Fresnel Reflection Snell Angle Stokes-Mueller Matrices Poincare Sphere
Antennas Coupling Near / Far Fields Waveguides Multipathing Resonance
Survey Design Contrast Geometry Resolution Depth of Investigation Orientation
Data Acquisition Data Processing Modeling Interpretation Uncertainty
Applications: Noninvasive Surface Borehole Airborne Satellite