13.437. preparative chemistry: spectroscopic and structural
... where = viscosity and V = molecular volume. There are three main terms which need to be minimised in order to obtain reasonable linewidths in quadrupolar nuclei, namely: the linewidth factor, the electric field gradient and the correlation time. The linewidth factor is dependent only on the intrin ...
... where = viscosity and V = molecular volume. There are three main terms which need to be minimised in order to obtain reasonable linewidths in quadrupolar nuclei, namely: the linewidth factor, the electric field gradient and the correlation time. The linewidth factor is dependent only on the intrin ...
Antenne_verslag_eng
... With μe the permeability of the material in the coil, n the number of turns in the coil and r the radius of the ferrite rod. Higher radiation resistances are obtained with this antenna than with a conventional wire antenna at a wavelength of 3868 meters. If the coil is for example wound in a circle ...
... With μe the permeability of the material in the coil, n the number of turns in the coil and r the radius of the ferrite rod. Higher radiation resistances are obtained with this antenna than with a conventional wire antenna at a wavelength of 3868 meters. If the coil is for example wound in a circle ...
© NCERT not to be republished
... from the source? A copper wire is stretched uniformly to double its length; how will its resistance change? Will its resistivity also be changed? What happens to the value of current if positions of battery and ammeter are interchanged in such a manner that the current enters at the positive termina ...
... from the source? A copper wire is stretched uniformly to double its length; how will its resistance change? Will its resistivity also be changed? What happens to the value of current if positions of battery and ammeter are interchanged in such a manner that the current enters at the positive termina ...
"periodic principle" in the development of propulsion
... universe prevent unsound nations from overtaking others in the race for the most powerful propelling devices. B2. The basics of propulsion In this treatise the term "propulsion" is used to describe a device which is able to produce a controllable motion. In turn the controllable motion is the motion ...
... universe prevent unsound nations from overtaking others in the race for the most powerful propelling devices. B2. The basics of propulsion In this treatise the term "propulsion" is used to describe a device which is able to produce a controllable motion. In turn the controllable motion is the motion ...
Generation of scale invariant magnetic fields in
... the coherent magnetic fields in the intergalactic medium has been obtained [23, 24]. These observations cannot be explained by astrophysical process alone and, it seems inevitable that, at least on the largest scales, the magnetic fields have a cosmological origin. This has led to the construction ...
... the coherent magnetic fields in the intergalactic medium has been obtained [23, 24]. These observations cannot be explained by astrophysical process alone and, it seems inevitable that, at least on the largest scales, the magnetic fields have a cosmological origin. This has led to the construction ...
PPT - Wayne State University
... Magnetic relaxation When the local moments are perturbed, there are two main relaxation effects on the magnetic dynamics. T1 (Longitudinal relaxation time) is a measure of how long the magnetization takes to recover to align along B after being flipped 90o. This depends on interactions of the momen ...
... Magnetic relaxation When the local moments are perturbed, there are two main relaxation effects on the magnetic dynamics. T1 (Longitudinal relaxation time) is a measure of how long the magnetization takes to recover to align along B after being flipped 90o. This depends on interactions of the momen ...
An Introduction to AC Field Hall Effect Measurements
... The samples explored for this document were chosen specifically to provide transparency concerning the validity of the AC Hall effect. The first sample of moderately low mobility material would be easily recognized and tested in many laboratories. By looking at the mobilities derived in the transpar ...
... The samples explored for this document were chosen specifically to provide transparency concerning the validity of the AC Hall effect. The first sample of moderately low mobility material would be easily recognized and tested in many laboratories. By looking at the mobilities derived in the transpar ...
Effects of MHD slow shocks propagating along magnetic flux tubes
... ∼ 3. However, between these peaks, the spacecraft seems to cross the cold ionosphere of Io, and thus, the data points are not valid for the warm plasma in the torus. Extrapolating the data points with a Gaussian function reveals that the real enhancement of the plasma pressure must be even bigger, ∼ ...
... ∼ 3. However, between these peaks, the spacecraft seems to cross the cold ionosphere of Io, and thus, the data points are not valid for the warm plasma in the torus. Extrapolating the data points with a Gaussian function reveals that the real enhancement of the plasma pressure must be even bigger, ∼ ...
Katholieke Hogeschool Limburg
... It is indeed the original vibration that propagates, but the rope itself doesn’t propagate... Likewise every sound originates in a vibration at its source. For example, what vibrates when you hear the sound of a guitar? ................................................................................ ...
... It is indeed the original vibration that propagates, but the rope itself doesn’t propagate... Likewise every sound originates in a vibration at its source. For example, what vibrates when you hear the sound of a guitar? ................................................................................ ...
1 Relationship between the magnetic hyperfine field and the
... value of the proportionality constant, a, depends on theoretical approach. In this respect the most detailed calculations were carried out by Lindgren and Sjøstrøm who calculated Bcp (1s, 2s, 3s) and Bcep (4s, 3d, 4p) terms for five different exchange correlation potentials both for a band iron and ...
... value of the proportionality constant, a, depends on theoretical approach. In this respect the most detailed calculations were carried out by Lindgren and Sjøstrøm who calculated Bcp (1s, 2s, 3s) and Bcep (4s, 3d, 4p) terms for five different exchange correlation potentials both for a band iron and ...
Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.