In order to protect ships against the magnetic mines that the Royal Air Force began dropping on the Danube from 1944, a de-magnetisation device was built in the harbour at Albern.
32.
I don't get how the pi / 2 pulse in nuclear magnetic resonance results in maximum magnetisation, or why the pi pulse puts the population of all the protons in an excited state.
33.
This equation is valid only under the so-called quasi-static conditions, where the frequency of magnetisation does not result in the skin effect; that is, the electromagnetic wave fully penetrates the material.
34.
Some areas that appear normal under normal MRI look abnormal under special MRI, like magnetisation transfer MTR-MRI . These are called Normal Appearing White Matter ( NAWM ) and Normal Appearing Grey Matter ( NAGM ).
35.
According to the same announcement, when these texts were written, there was no solution used on the walls, but, probably, they were done by activating the micro metal crumbs inside the walls through magnetisation.
36.
Magnetic properties close to the surface of soft magnetic materials can be analysed using the Magneto-Optic Kerr Effect Potter ( MOKE ) which utilises the transverse Kerr effect to measure magnetisation loops in samples such as ferromagnetic films.
37.
A "'spin valve "'is a device, consisting of two or more conducting magnetic materials, whose electrical resistance can change between two values depending on the relative alignment of the magnetisation in the layers.
38.
I have doubts about whether even the most sophisticated equipment could recover any data at all from a modern hard drive after two low-level formats because the tracks are so close together that there is probably little residual magnetisation between tracks.
39.
The magnetic surface is conceptually divided into many small sub-micrometer-sized magnetic regions, referred to as magnetic domains, ( although these are not magnetic domains in a rigorous physical sense ), each of which has a mostly uniform magnetisation.
40.
Modern magnetism is concerned with furthering the understanding of the behaviour of the magnetisation on very small ( sub-micrometre ) length scales and very fast ( sub-nanosecond ) timescales and how this can be applied to improving existing or generating new technologies and computing concepts.
