dielectric constant
101Electret — (formed of elektr from electricity and et from magnet ) is a dielectric material that has a quasi permanent electric charge or dipole polarisation. An electret generates internal and external electric fields, and is the electrostatic equivalent… …
102Dissipation factor — In physics, the dissipation factor (DF) is a measure of loss rate of energy of a mode of oscillation (mechanical, electrical, or electromechanical) in a dissipative system. It is the reciprocal of Quality factor, which represents the quality of… …
103Weather radar — in Norman, Oklahoma with rainshaft …
104capacitance — /keuh pas i teuhns/, n. Elect. 1. the ratio of an impressed charge on a conductor to the corresponding change in potential. 2. the ratio of the charge on either conductor of a capacitor to the potential difference between the conductors. 3. the… …
105Morris S. Kharasch — Morris Selig Kharasch (August 24, 1895 – October 9, 1957) was a pioneering organic chemist best known for his work with free radical additions and polymerizations. He defined the peroxide effect, explaining how an anti Markovnikov orientation… …
106Lau Wai Shing — Wai Shing Lau (simplified Chinese name: 刘偉成, born July 29, 1955 in Hong Kong) is also known as Lau Wai Shing. The family name of Lau is sometimes spelled as Liu like Liu Bang (founder of the Han dynasty) or Liu Shaoqi or Liu Bocheng. This is… …
107Properties of water — H2O and HOH redirect here. For other uses, see H2O (disambiguation) and HOH (disambiguation). This article is about the physical and chemical properties of pure water. For general discussion and its distribution and importance in life, see Water …
108Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea …
109Frequency domain sensor — Frequency domain (FD) sensor is an instrument developed for measuring soil moisture content. The instrument has an oscillating circuit, the sensing part of the sensor is embedded in the soil, and the operating frequency will depend on the value… …
110RF and microwave filter — Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). This frequency range is the range… …
