field gradient वाक्य
उदाहरण वाक्य
मोबाइल
- When an electric field gradient exists between the two electrodes, exceeding 34 kilovolts per centimeter at sea level atmospheric pressure, an electric arc occurs.
- The role of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge.
- The spring constant and relative partial charges on the atom and associated Drude particle determine its response to the local field gradients, which interact with higher order moments.
- Since the resolution of the imaging technique depends on the magnitude of magnetic field gradient, many efforts are made to develop increased field strength, often using superconductors.
- In 2008 Hennig published a concept for imaging with non-linear magnetic field gradients which allows increasing the image resolution in brain MRI in the outer image regions.
- In atoms, hyperfine structure occurs due to the energy of the nuclear electric quadrupole moment in the electric field gradient due to the distribution of charge within the atom.
- DQF COSY uses a coherence selection method such as phase cycling or pulsed field gradients, which cause only signals from double-quantum coherences to give an observable signal.
- Another relaxation mechanism is the electrostatic interaction between a nucleus with an electric quadrupole moment and the electric field gradient that exists at the nuclear site due to surrounding charges.
- If a magnetic field gradient is superimposed on the uniform field, those atoms whose magnetic moments are aligned with the field will have lower energies in a higher field.
- As the edges of the Schottky contact are fairly sharp, a high electric field gradient occurs around them, which limits how large the reverse breakdown voltage threshold can be.
- Pulsed field gradient ( PFG ) techniques are key to magnetic resonance imaging, spatially selective spectroscopy and studies of diffusion via diffusion ordered nuclear magnetic resonance spectroscopy ( DOSY ).
- In many cases coronas can be suppressed by corona rings, toroidal devices that serve to spread the electric field over larger area and decrease the field gradient below the corona threshold.
- By sensing electric field gradients at a distance, they can detect energized objects without making direct contact, making these instruments useful for scanning or screening large areas for potential electrical hazards.
- :: : 2 ) The E field gradient inside a simple resistor is linear so the drift velocity of electrons in the direction of the field is constant throughout the resistor material.
- In MRI, the static magnetic field is caused to vary across the body ( by using a field gradient ), so that different spatial locations become associated with different precession frequencies.
- The pole pieces of the magnet are so shaped that there is a region in which the product of the field strength and field gradient in the " z " direction is constant.
- Magnetic separations of arsenic at very low magnetic field gradients with high-surface-area and monodisperse magnetite ( Fe 3 O 4 ) nanocrystals have been demonstrated in point-of-use water purification.
- Schwarzschild did mention the 1952 use of field gradients to correlate nuclear signals to spatial location and thus enable the measurements of both diffusion and flow, but the 1952 MRI measurement of structure was not mentioned.
- The effects are important at very high electrical field gradients ( 10 8 10 9 V / m ), like those observed in electrical double layers at interfaces or at the surfaces of electrodes in electrochemistry.
- This corrugation gives rise to strong electric field gradients in the near-tip zone ( on the order of an atomic radii or less from the tip ), which during ionisation deflects ions away from the electric field normal.
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