Results 21 to 30 of about 240,656 (315)

Micromachined Electric Field Mill Employing a Vertical Moving Shutter

Procedia Engineering, 2014
AbstractThis paper presents a new type of micromachined electric field mill (MEFM) for measuring dc electric fields. This MEFM employs thermal actuators for vertical movement of an electrically grounded shutter, to mill the amplitude of a dc electric field incident on underlying sense electrodes. It addresses the main drawbacks of existing MEFMs, which
T. Chen, Cyrus Shafai, Athula Rajapakse, B.Y. Park   +3 more
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Electric field mill for the simultaneous measurement of electric field strength and ion current diensity

, 1995
In the last 20 years, the use of high voltage direct current (HVDC) power transmission has grown considerably. With the increase in the number of HVDC transmission lines and in the transmission voltages, concern has increased as to possible health effects. For research on these health effects to be carried out, it is necessary to measure the electrical
Malcolm Sellars
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Model of response of an electric field mill operating during suborbital flight [PDF]

Review of Scientific Instruments, 1974
A rotating-vane electric field mill was used to measure the electric field at the base of a series of vehicles as they passed through the ionosphere and reentered the atmosphere. Anticipated rapid and large variations in measured electric fields required a time response of a few milliseconds and a dynamic range from 40 to 50 000 V/m.
Thomas P. Sheahen
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Measurements with Angular Sensitive Electric Field Mill in Thunderstorms

Journal of Physics: Conference Series
Abstract Electric Field Mills (EFMs) are critical tools in atmospheric sciences for measuring electric fields within thunderstorms. Traditional EFMs primarily record field magnitudes and often lack the precise temporal resolution and directionality necessary for in-depth storm analysis.
Martin Kákona, Jakub Kákona, Roman Dvořák, Iva Ambrožová, Olena Velychko, Martina Lužová, Jakub Šlegl, Marek Sommer, Vít Hanousek, Ronald Langer, Samuel Štefánik, O. Ploc   +11 more
openalex   +3 more sources

Retrieving Storm Electric Fields from Aircraft Field Mill Data. Part II: Applications

Journal of Atmospheric and Oceanic Technology, 2006
Abstract The Lagrange multiplier theory developed in Part I of this study is applied to complete a relative calibration of a Citation aircraft that is instrumented with six field mill sensors. When side constraints related to average fields are used, the Lagrange multiplier method performs well in computer simulations.
William J. Koshak, Douglas M. Mach, Christian Hergarten, M. F. Stewart, Monte G. Bateman   +4 more
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Model, design, and experiments of a field mill sensor for measuring high-voltage DC electric fields

Journal of Physics: Conference Series
Abstract In an attempt to measure the DC field intensity in the space below the high voltage transmission line, based on the principium of electrostatic induction, the DC-induced signal is transformed into an AC signal by continuously changing the relative area of the parallel plate capacitor, and then the signal is filtered and ...
Tongtong Xie
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Atmospheric Electric Field-Mill Sensor Field Campaign Report

, 2021
Hugo Silva, Francis M. Lopes
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The electrical activity of Saharan dust as perceived from surface electric field observations [PDF]

Atmospheric Chemistry and Physics, 2021
We report on the electric field variations during Saharan dust advection over two atmospheric remote stations in Greece, using synergistic observations of the vertical atmospheric electric field strength (Ez) at ground level and the lidar-derived ...
V. Daskalopoulou, V. Daskalopoulou, S. A. Mallios, Z. Ulanowski, Z. Ulanowski, G. Hloupis, A. Gialitaki, A. Gialitaki, I. Tsikoudi, I. Tsikoudi, K. Tassis, K. Tassis, V. Amiridis   +12 more
doaj   +1 more source

Isotropic Irradiation Model from Atmospheric Discharges Using Local Atmospheric Electric Field Data

Brazilian Archives of Biology and Technology, 2022
Using a local atmospheric electric field sensor network (Field Mill), an electromagnetic link model was proposed considering a free space electric field and a theoretical electric field calculated from an atmospheric discharge. With this, it was possible
Armando Heilmann, Lucas Filus Ramos, César Augusto Dartora, Augusto Mathias Adams   +3 more
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Karakteristik Medan Listrik Atmosfer Kota Padang dan Hubungannya dengan Sambaran Petir Awan ke Tanah

Jurnal Nasional Teknik Elektro, 2017
The possibility of using Electric Field Mill data as parameter of lightning warning sistem requires atmospheric electric field data comparisons with lightning detection sistems.
Primas Emeraldi, Ariadi Hazmi
doaj   +5 more sources