Fundamentals of Rock Properties – Readyzone

Fundamentals of rock properties Porosity The porosity of a rock is a measure of the storage capacity (pore volume) that is capable of holding fluids. Quantitatively, the porosity is the ratio of the pore volume to the total volume (bulk volume). There are two types of porosity:  Absolute porosity Effective porosity Saturation Saturation is defined as that fraction, or percent,…

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Light Emitting Diode – Electronic device

Light Emitting Diode The increasing use of digital displays in calculators, watches, and all forms of instrumentation has contributed to the current extensive interest in structures that will emit light when properly biased. The two types in common use today to perform this function are the light emitting diode (LED) and the liquid-crystal display (LCD). As the name implies, the light emitting diode…

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Semiconductor diode – Electronic device – Readyzone

Semiconductor diode The semiconductor diode is formed by simply bringing n- and p-type materials together (constructed from the same base—Ge or Si), as shown in Fig. 1. At the instant the two materials are “joined” the electrons and holes in the region of the junction will combine, resulting in a lack of carriers in the region near the junction. This region of uncovered positive and…

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