Electrical resistivity tomography Electrical resistivity tomography Electrical resistivity tomography (ERT) or electrical resistivity imaging (ERI) is a geophysical technique for imaging sub-surface structures from electrical resistivity measurements made at the surface, or by electrodes in one or more boreholes. If the electrodes are suspended in the boreholes, deeper sections can be investigated. It is closely related to the medical imaging technique electrical impedance tomography (EIT), and mathematically is the same inverse problem. In contrast to medical EIT, however, ERT is essentially a direct current method. A related geophysical method, induced polarization (or spectral induced polarization), measures the transient response and aims to determine
Electrical engineering technology degree and considered craftsman technicians. Eventually, with additional experience and certifications obtained then the craftsman technicians may advance to master craftsman technicians. Electrical/electronic engineering technologists are broad specialists, rather than central technicians. EETs have a bachelor's degree and are considered applied electrical or electronic engineers because they have electrical engineering concepts to use in their work. Entry-level jobs in electrical or electronics engineering generally require a bachelor's degree in electrical engineering, electronics engineering, or electrical engineering technology. Electrical engineering technology Electrical/Electronics engineering technology (EET) is an engineering technology field that implements and applies the principles of electrical engineering. Like electrical