Results 11 to 20 of about 2,049,034 (240)

High Voltage Electric Fields Have Potential to Create New Physical Pest Control Systems

open access: yesInsects, 2020
An electric field is the space surrounding an electric charge, within which it is capable of exerting a perceptible force on another electric charge. Especially under high voltage, electric fields induce various electrostatic phenomena, some of which ...
Shin-ichi Kusakari   +3 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

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

Influences of cosmic radiation, artificial radioactivity and aerosol concentration upon the fair-weather atmospheric electric field in Lisbon (1955–1991) [PDF]

open access: yes, 2006
The atmospheric electric field is influenced by cosmic radiation, radioactivity and aerosols. In this work we investigate the existence of: (i) correlations between relative anomalies of annual values of atmospheric electric field and cosmic radiation ...
Lucio, P.S.   +3 more
core   +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

Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge [PDF]

open access: yes, 2007
The pulsed electroacoustic (PEA) technique was used to perform space charge measurements in polymeric power cables. However, for a practical dc power cable the electric field is affected by conductivity of the material, which is a function of both ...
Chen, George, Choo, Wilson
core   +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

Preparation of circular Rydberg states in helium using the crossed fields method [PDF]

open access: yes, 2016
Helium atoms have been prepared in the circular $|n=55,\ell=54,m_{\ell}=+54\rangle$ Rydberg state using the crossed electric and magnetic fields method.
Hogan, S. D., Zhelyazkova, V.
core   +2 more sources

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

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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