Results 1 to 10 of about 313,903 (266)

Trends and Features of Thunderstorms and Lightning Activity in the Upper Volga Region

open access: yesAtmosphere, 2023
An increase in the frequency of atmospheric hazards in a changing climate has attracted interest in the study of regional features of mesoscale convective systems and trends of lightning activity. Severe convective storms are the most destructive weather
Svetlana Dementyeva   +5 more
doaj   +1 more source

Polychromatic electric field knots

open access: yesPhysical Review Research, 2021
The polarization of a monochromatic optical beam lies in a plane and, in general, is described by an ellipse, known as the polarization ellipse. The polarization ellipse in the tight-focusing (nonparaxial) regime forms nontrivial three-dimensional ...
Manuel F. Ferrer-Garcia   +4 more
doaj   +1 more source

Experimental Study on the Fracture Characteristics of Hole-Crack in Rock-like Material under Biaxial Compression

open access: yesApplied Sciences, 2023
Using experimental methods to study the influence of hole and cracks on the mechanical properties and fracture characteristics of rock-like mortar materials under biaxial compression conditions.
Yuan Tian   +4 more
doaj   +1 more source

Recognition and conversion of electric field representations: The case of electric field lines

open access: yesPhysical Review Physics Education Research, 2023
We conducted a study with introductory and upper-division physics students in a Mexican university to learn how students independently recognize the electric field’s main characteristics in the electric field lines diagram and as a source or target ...
Esmeralda Campos   +3 more
doaj   +1 more source

Torsional Moving Electric Field Sensor with Modulated Sensitivity and without Reference Ground

open access: yesProceedings, 2017
A MEMS electric field sensor is presented with wide measurement resolution and adjustable sensitivity. The sense membrane is mounted using torsional springs and employs opposite biased electrodes on its surface, causing rotation in presence of an ...
Sampath Liyanage   +3 more
doaj   +1 more source

Study on real-time detection of laser drilling in transparent hard and brittle materials by an external electric field

open access: yesMeasurement: Sensors, 2021
This research proposes to applied external electric field detect to the laser processing, Design and analysis of detection electrodes to detect plasma induced by laser processing, and then transmit the plasma signal to the controller in real time through
Chao-Ching Ho, Jun-Yi Gao
doaj   +1 more source

Karakteristik Medan Listrik Atmosfer Kota Padang dan Hubungannya dengan Sambaran Petir Awan ke Tanah

open access: yesJurnal 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   +1 more source

Tripolar electric field Structure in guide field magnetic reconnection [PDF]

open access: yesAnnales Geophysicae, 2018
It has been shown that the guide field substantially modifies the structure of the reconnection layer. For instance, the Hall magnetic and electric fields are distorted in guide field reconnection compared to reconnection without guide fields (i.e ...
S. Fu, S. Huang, M. Zhou, B. Ni, X. Deng
doaj   +1 more source

Electric field measurement in electric-field modified flames

open access: yesProceedings of the Combustion Institute, 2021
Abstract The application of an electric field to a flame modifies the flame characteristics due to the collective motion of charged particles generated within the flame. The applied field mobilises electrons and ions depending on their polarity, leading to localised regions of space charge with sufficient density to either locally amplify or shield ...
Thomas D. Butterworth, Min Suk Cha
openaire   +2 more sources

Field comparison between electrostatic charge and light scattering monitors for continuous monitoring of airborne PM1.0, PM2.5, and PM10 mass concentrations [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2018
This study evaluates and simultaneously compares two monitors, an electrostatic PM mass and a light scattering, DustTrak 8533 mass monitor, TSI Incorporated, for PM1. 0, PM2. 5 and PM10 measurements at ambient conditions at the Research Unit of Applied
Panich Intra   +2 more
doaj   +1 more source

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