A calculation of the temperature dependence of the electron concentration in n-type InSb films is presented. It is found that a very simple model of an impurity band which overlaps the conduction band explains the relatively temperature- independent behaviour of the electron concentration of InSb ...
A self limiting electrical heating device with an electrical resistance material the resistivity of which is changed by more than a power of (10) within a predetermined, narrow temperature interval and which is arranged between electrical conductors connectable to a voltage source, the conductors and...
Metals like silver, copper, and aluminum have many free electrons, making them good conductors with low resistance. However, theirresistivitychanges with temperature. Generally, metals have higherelectrical resistancewhen the temperature increases, while non-metallic substances usually show decreased resistanc...
Conductivity of a metallic conductor sigma=1/p=(ne^2r)/m With rise of temperature, the collision of electrons with fixed lattice ions/atoms increases so that relaxation time decreases. Consequently, the conductivity of metals decreases with rise of
4) temperature resistivity property 电阻-温度变化率 5) capacitance shift rate 容量变化率 6) capacitance change rate 电容变化率 补充资料:电容量变化率 分子式: CAS号: 性质:电容量随温度变化的程度。电容量变化率ΔC的表达式为ΔC=C2-C1/C1×100%。式中C1为室温(20±5)℃时的电容量;C2为温度-25℃或...
In particular, rare studies have discussed variation resistivity of electrical parameters of coal samples and temperature rise effect on coal surface under the action of an applied DC field. In this study, breakdown field intensity of testing coal samples was analyzed and calculated, variation ...
9.Study on Temperature Dependence of Resistivity in Liquid Alloy;电阻率法研究二元合金温度诱导不连续液—液结构转变 10.Analysis of the Influence of Temperature to Underground Continous Wall Interal Force and Deformation in Deep and Large Foundation Excavation;温度对深大基坑地下连续墙内力和变形影响分析 11...
The results show that: (1) Rock resistivity is influenced by metallic minerals, saturation, temperature, ion content of fracture water, and joints. Regarding deep subsurface detection issues, the main factors affecting the detection results are water content and rock integrity. (2) During the ...
Study on Legibility and Brightness of work surface (part 6) : Effects of the Momentary Change of Color Temperature on Reading to the Young and the Aged A series of drilling-fluid invasion experiments were conducted on Berea sandstone cores to measure the resistivity-profile characteristics of the...
美 英 un.年变化;年度变化;年变动;年变异 网络年变差;年际变化;变化率 英汉 网络释义 un. 1. 年变化 2. 年度变化 3. 年变动 4. 年变异 释义: 全部,年变化,年度变化,年变动,年变异,年变差,年际变化,变化率