An
electric field is the invisible force around an electrically charged object that can attract or repel other charged objects nearby. It is like an invisible bubble that can push or pull other charged things.
Full definition
New research suggests that swirling designs on the dusty lunar surface might be the product
of electric fields generated by pockets of magnetic bubbles.
There are materials with magnetic ordering, which react to magnetic fields, and there are materials with electric ordering, which can be influenced
by electric fields.
It takes two electrodes positioned at an angle to each other, together
with electric field lines which are curved upward between the two electrodes.
In future it could be extended to seconds, perhaps by
using electric fields to alter the tuning of the ions.
When subjected to strong driving forces, such as
strong electric fields, «the behavior of such defects had not been well - understood,» she says.
Application of an
external electric field to the crystal sets the electrons in motion, again strongly influenced by the spatial correlations among all electrons.
Just as every planet has a gravity field, it is believed that every planet with an atmosphere is also surrounded by a
weak electric field.
This scientific area has attracted much interest due to its potential to write small magnetic elements with a low - power
electric field rather than magnetic fields that require high - power charge currents.
When a
negative electric field is applied to the «ink», the white particles move to the top of the capsule making the surface appear white at that specific spot.
That is, since water molecules are polar, having a positive end and negative end, they begin to rotate rapidly as the
alternating electric field passes through.
The device is filled with voltage - sensitive dye that gives off green to red light in proportion to the
surrounding electric field.
Researchers have developed a way to propel and direct microscopic - sized worms along a narrow channel using a
mild electric field.
The idea stems from the fact that, when a plane flies through an
ambient electric field, its external electrical state, normally in balance, shifts.
Magnetic fields, at strength levels appropriate for substantial energy transfer, are easier to generate than
equivalent electric fields.
«Charge controls the ability to transport particles that are interacting with cells and other objects that
possess electric fields,» he said.
This beam enabled the researchers to create a tiny, three -
dimensional electric field and scan a molecule from all conceivable angles.
By freezing, the embryo may reduce its heart rate, which in turn may also reduce its
own electric field, making it harder for predators to notice it.
Many of those models estimate the sizes and numbers of dust particles in the atmosphere based on weather conditions, but they don't include the effects
of electric fields.
The team demonstrated a theoretical framework and showed how the stability and structure of a point defect is altered under
strong electric fields.
During manufacture the fabric is exposed to a
high electric field, which causes positive and negative charges in the polymer to be separated in an orderly manner.
The trap compensates a single molecule's Brownian diffusive motion by continuously applying
electric fields in solution that drive the molecule back to the center of the field - of - view.
«By combining three electrons in a triple quantum dot and oscillating an
applied electric field at the frequency that separates adjacent energy levels, we can thus control the spins of the electrons without measuring them,» explains Charles Marcus.
Esposito's experiment had aimed to study for the first time the effect of
electric field on the creation of martian dust storms.
The experimental results show the decreasing electron temperature along the expansion, following a near perfect adiabatic expansion of an electron gas
when electric fields are removed from the system.
Because powerlines are typically 400,000 volts, and Earth is at an electrical potential voltage of zero volts, pylons
create electric fields between the cables they carry and the ground.
The usage of
pulsed electric field for conditioning substrates can significantly enhance biogas yield in commercial biogas plants.
The dipole can be made to vibrate by the
oscillating electric field in light, which makes the dipole emit its own light, according to the theory of electromagnetism.
The intense
electric field at the center of a focused laser beam polarizes the particle, just as it would polarize an atom.
The researchers show that the webs cause tiny distortions in Earth's
electric field within a few millimeters of their location.
In an FLCD, the molecules can be moved by a pulse of
electric field between two stable positions: one in which the molecules shift the polarisation of light to let it through, and one in which they do not.
The challenge of using
electric fields for wireless power transfer — the capacitive approach — is that the large airgap between the roadway and the electric vehicle results in a very small capacitance through which the energy must be transferred.
«The equipment currently used to
measure electric field strength has some significant downsides,» explains Andreas Kainz from the Institute of Sensor and Actuator Systems (Faculty of Electrical Engineering, TU Wien).
This strategy makes use of the
intense electric fields associated with pulsed, high - energy laser beams to accelerate electrons and protons to «relativistic» velocities (i.e. speeds approaching that of light).
Map of the modelled changes in
electric field caused by the St Patrick's Day storm, where blue is low and red is high.
In this example, the natural
electric field around a real flower draws tiny amounts of charged paint to the edges of the petals.
In the MMS mission, each of the four identical spacecraft has numerous instruments measuring magnetic and
electric fields as well as the motion of ions and electrons.
• The rapid discovery of fluoride - based multiferroic materials, which could allow for
generating electric fields that would support more efficient electronic devices or be electronic responsive under a magnetic field.
A strong
electric field inside the chamber guided the electrons to positions on a planar detector that depended on their initial velocities rather than on their initial positions.
Phrases with «electric field»