The foundation of our researches is the assumption that the terrestrial magnetic force is the collective action of all the magnetised particles of the earth’s mass.
The constancy with which a magnetised needle points along a certain line which varies a little from the earth’s axial line, renders it one of the most important instruments to the practical and the scientific man.
More than seventy years ago Joseph Henry, in the United States, noticed the effect of an electric spark at a distance upon magnetised needles.
Your next step is to examine the action of the two needles which you have thus magnetised upon each other.
Vary your experiments by causing your magnetised darning-needle to attract and repel your large magnet; it is quite competent to do so.
I hold a magnetised strip of steel by its centre, and find that one half of the strip attracts, and the other half repels, the north end of a magnetic needle.
Six inches of this, magnetised in the manner of the darning-needle, will be better able to carry your paper indexes.
Supposing the north end of your little needle to be that attracted below, you infer that the entire lower half of your magnetised strip exhibits south magnetism, while the entire upper half exhibits north magnetism.
When the electro-magnet is magnetised by the passage of the current, the armature is pulled suddenly on one side, and then the pendulum swings backwards and forwards in front of the aperture for some minutes before it comes to rest.
We shall need, first of all, a magnetised needle; this can be made out of a piece of watch spring.
Moreover the armature, besides beingmagnetised by induction, as acted on in the ordinary method of making electric bells, is by Messrs.
During the electric storm on the Liedenbrock sea, that ball of fire, which magnetised all the iron on board, reversed the poles of our magnet!
Boys have been heard to remark that that organ was magnetisedand attracted iron filings.
Any change in the inclination of the magnetised needle?
The variation of the compass remained unaltered, as also the behaviour of magnetised iron at all altitudes.
A series of simple experiments now embarked upon showed the behaviour of magnetised iron, as also of a galvanic pile or battery, to remain unaltered.
A piece of steel is readily magnetised by stroking it from end to end in one direction with the pole of a magnet, and in this way compass needles and powerful bar magnets can be made.
The soft iron diaphragm is, of course, magnetised by the induction of the pole, and would be attracted bodily to the pole were it not fixed by the rim, so that only its middle is free to move.
Figure 34 illustrates a common poker magnetised in the same way, and supporting nails at both ends.
The box intensifies the sounds by its sonorousness, through the medium of the slight touches which the magnetised iron gives to the box at every expansion or elongation which the electro-magnetism gives it.
This alternating current is conducted to a frequency meter, which consists of a powerful electro-magnet, over which are placed magnetised steel springs, having different natural periods of vibration.
In all arrangements of this kind there is a tendency for the armature spring to vibrate, as it were, sinusoidally, if the coil is magnetised and demagnetised at a higher rate than the natural period of vibration of the spring.
The other portion of the current from D flows through the coil M, and it becomes magnetised at the same time that the coil N becomes demagnetised.
To the coherer is connected the sensitive electro-magnet M, which becomes magnetised as soon as the incoming waves act upon the coherer.
On passing the discharge, the needle was found to be a magnet; but it appeared probable that a part of the electricity of the jar had passed off to the small helix, and so magnetised the needle.
The discovery of using the magnetisediron needle as a compass.
The discovery that the magnet (or magnetised iron) possessed the quality of definite direction, one of its poles always indicating the north, if it were so supported or suspended that it could move freely.
Some deny all vital magnetism, and would reject alike the holy water of religion and the magnetised water of medical science.
They are all magnetised objects, more or less powerful, or useless, according to the knowledge, purity, and spirituality of the person who magnetises them.
Its emissions explain the light that those who have been magnetised believe they see: the wandering flames in cemeteries, the forms of phantoms.
They adopted it; and they sent their clients magnetised tokens, magnetised handkerchiefs, magnetised water, and magnetised bread.
A magnetised sovereign having been placed on the floor, Jane, then in the state of delirium, was directed to stoop and pick it up.
On the 9th of July bread with butter was given to her, and while eating it she drank some magnetised water, and falling into a stupor dropped her food from her hand and frowned.
Having magnetised the child and the dumb youth with results so extraordinary, M.
If she drank water magnetised in this manner, she was constrained involuntarily to pour forth her soul in song.
The epileptic patients at the Salpetriere were magnetised by permission of M.
On another occasion, when in a state of delirium, in which she had remained three hours, she was asked to describe her feelings when she handled any magnetised object and went off into the stupor.
A deaf and dumb lad, eighteen years of age, and subject to attacks of epilepsy, was magnetisedfifteen times by M.
But above all, they are magnetised by the application of his hands and the pressure of his fingers on the hypochondres and on the regions of the abdomen; an application often continued for a long time-sometimes for several hours.
If a magnetised rod were laid on her right eye, every object on which she gazed appeared magnified.
He was a man of great simplicity and much benevolence, and not only magnetised but fed the sick that flocked around him.
Analogous to this is the case of a bar of magnetised steel of high coercive force: the steel retains its magnetic properties until a new force displaces them.
Also, when the iron-filings are absent, we must think of the magnetised bar as in a different condition from that of the unmagnetised.
Let us consider a magnetised bar of steel by the side of a second unmagnetised bar, in all other respects the same.
Indeed, it is not too much to say that the maritime commerce of the world was based upon the behaviour of that little piece of magnetised steel.
Magnetised electricity is the first matter of the magnum opus.
His celebrated azoth some say was magnetised electricity, and others that his magnum opus was the science of fire.
The Chinese used a magnetised needle, which they placed in a bit of rush or pith, which was floated in a basin of water, and thus allowed to move freely and turn towards the poles.
This proves not only that they knew the attractive properties of the loadstone, and its power of imparting these properties to metal, but also that they were aware of the polarity of a magnetised needle.
The fact is known, and we see its result; but the reason why magnetised steel or iron should have this tendency, this polarity, is one of the mysteries which man has not yet been able to penetrate, and probably never will.
The next slot in the wheel that was to be magnetised was 33.
I have kept them there until now," he said, "in order that they might not become magnetised by the electric work I have been doing.
He backed red, and, far away at the top of the Hotel Malmaison, Emile Deschamps pressed the key which magnetised the slot 18 in the wheel upon the green table--18 being a red number.
The absorption of thought by a band of magnetisedsteel was a startling fact, nevertheless the theory was, as I afterwards found, not an altogether unknown one.
The transference of thought by means of this crescent of magnetised steel, the horns of which acted as positive and negative poles, must be one of the many marvels which, though known to the ancients, have been lost to us for ages.
Illustration] m m is a permanent bar-magnet, to the upper end of which is attached a soft iron core, which becomes magnetised by the permanent magnet.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "magnetised" in a variety of sentences. We hope that you will now be able to make sentences using this word.
