What are units of chargeability?

What are units of chargeability?

True chargeability is the ratio of the over- or secondary voltage, Vs, to the observed voltage, V0, applied by way of an electrode array so that M = Vs/V0, expressed as a percentage or as millivolts per volt; this quantity is independent of topographic effects and of electrode geometry and is thus a good measure of …

What is IP chargeability?

Induced polarization (IP) is a geophysical imaging technique used to identify the electrical chargeability of subsurface materials, such as ore. The polarization effect was originally discovered by Conrad Schlumberger when measuring the resistivity of rock.

How is induced polarization measured?

Induced Polarization and Resistivity They are usually measured at the same time by inserting two electrodes into the earth surface and passing a current through them. After the resistivity measurement is made, the current is shut off and the IP is measured.

How do you measure chargeability?

Two types of time domain data The figure to the right shows voltage measured when the transmitter is first turned on and then turned off some time later. Using parameters from this figure, one definition of chargeability is M = V S / V P where and are the steady state and “secondary” potentials, respectively.

What does chargeability mean in consulting?

Chargeability is simple. Is someone getting a bill for the work that the employee is currently doing? If so, then the work is chargeable.

What does IP mean in surveying?

Induced Polarization (IP) is a geophysical method used extensively in mineral exploration and mine operations. The IP survey is very similar to electrical resistivity tomography (ERT). Resistivity and IP methods are often applied on the ground surface using multiple four-electrode sites.

What is resistivity in geophysics?

At the most basic level, electrical resistivity (ER) (as used in geophysics) is the measurement of ground variations gathered by applying a small and highly controlled electric current across an array of electrodes.

What is the polarization of a rock?

The polarization and the complex nature of electrical rock conductivity are attributed to zones of unequal ionic transport properties along the pore channels caused by charged interfaces and constrictions.

How is chargeability calculated?

Chargeability (payroll dollars) = direct labor in $/(direct labor in $ + indirect labor in $). The danger is that you can fall into the trap of believing that utilization is not a problem for your firm even though your profits are not where they should be.

What does chargeability mean in Accenture?

Highlighting the need for layoffs, Sweet pointed at Accenture’s chargeability – the percentage of hours employees spend on services paid for by clients.

What is HCR in surveying?

What is it? The Home Condition Report (HCR) was intended as a core component of the Home Information Pack. It has been carefully designed after lengthy consultation with surveyors, mortgage lenders, and the Consumer Association representing the interests of home buyers and owners.

What are the units of resistivity?

The unit of resistance is the ohm. In the metre-kilogram-second (mks) system, the ratio of area in square metres to length in metres simplifies to just metres. Thus, in the metre-kilogram-second system, the unit of resistivity is ohm-metre.

What is resistivity in geology?

Electrical conductivity (or resistivity) is a bulk property of material describing how well that material allows electric currents to flow through it. R esistance is the measured voltage divided by the current.

What is polarization in simple words?

Definition of polarization 1 : the action of polarizing or state of being or becoming polarized: such as. a(1) : the action or process of affecting radiation and especially light so that the vibrations of the wave assume a definite form. (2) : the state of radiation affected by this process.

What does polarization mean in physics?

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave.