Unipolar spots are very seldom observed without some indication of the characteristics of bipolar groups.
The bipolar spot seems to be the dominant type, and the unipolar type a variant of it.
The rods and cones pass the impulse along to the bipolar cells and these in turn to the optic nerve cells, the axons of which extend by way of the optic nerve to the thalamus in the brain.
In accordance with the laws of electromagnetic induction, if the bipolar ring armature shown in fig.
Lap winding for bipolar machine, with uneven number of coils; in this case the rear connectors may be made directly across a diameter as shown.
In winding drum armatures for bipolar dynamos of two horse power or less, and especially for very small machines as used in fan or sewing machine motors, a form of winding, known as the Siemens winding, which is shown in fig.
The fields may be either bipolar or multi-polar, and with respect to the type of armature winding employed, motors are classed as: 1.
A large current low voltage bipolar dynamo built for electrolytic work and here shown to illustrate the large size commutator and brushes necessary to collect the large current.
From opposite points of the surface of the bipolar cell "a strong process is given off, which is directly continued into a nerve fibre.
The armature is of the hand wound bipolar type built up of thin punchings.
The points upon the commutator at which the tips of the brushes (carried by opposite arms of the rocker) bear, should be, in bipolar dynamos, at opposite extremities of a diameter.
The direction of rotation of ordinary series, shunt, or compound bipolar dynamos may be reversed by simply reversing the brushes without changing any of the connections, then changing the point of contact of the brush tips 180°.
Hand-winding is now only employed in very small bipolar machines, the process being expensive and accompanied by the disadvantage that if one section requires to be repaired, the whole armature usually has to be dismantled and re-wound.
The multipolar lap-wound armature is obtained by simply repeating the bipolar winding p times, as indicated by the dotted additions of fig.
As the bipolar closed-coil continuous-current armature has been shown to consist in reality of two circuits in parallel, each giving the same E.
This memoir, written in 1904, clearly asserts the homopolarity of the centrosomes, and shows that the nuclear division is the result of a bipolar action, two poles of the same sign exerting their influence on opposite sides of the nucleus.
A bipolar field has a hypertonic pole or centre of concentration, and a hypotonic pole or centre of dilution.
To give a clear idea of the principles of the dynamo, the bipolarmachine is best suited for illustration, and is here given in Figs.
When two are used they are arranged on opposite sides of the armature, and form what is known as the bipolar machine.
AE, BF, CG and DH represent the balance coil and its connection for different positions of the armature of a bipolar machine.
In the figure, AE, BF, CG, and DH represent the balance coil and its connection for different positions of the armature of a bipolar machine.
Now, the only sphere of nature-phenomena with a bipolar character accessible to the onlooker-consciousness 'was that of electricity.
It is this apparent uni-polarity of gravity which has given Professor Einstein so much trouble in his endeavour to create a purely gravitational world-picture with bipolar electricity and magnetism fitting into it mathematically.
This accounts for the fact that the unipolar concept of gravity had eventually to be supplemented by some kind of bipolar concept.
Salient pole, bipolar field magnet with two coils wound around the cores.
The difficulty experienced with bipolar machines is that, with a dynamo of large output, the speed at which its armature would have to rotate to generate commercial voltages would be excessive.
What may be said of bipolar and multi-polar dynamos?
Dynamos with bipolar field magnets were universally used prior to 1890, but since that time machines of this type are only made in very small sizes; the multi-polar dynamo is the type now in general use.
In the salient pole bipolar magnet, the winding may be either upon the limbs, M M fig.
Consequent pole, bipolar field magnet with two coils on the cores.
There was, I knew, a certain amount of feedback in a bipolar control circuit.
There was a certain amount of feedback in a bipolar control circuit and I could feel the heat of its body, the beat of the great heart, the rise and fall of the broad chest, the pulse of the blood vessels in the thick neck.
It is evident from the figure that to obtain high frequency would require too many revolutions of the armature of a bipolar machine for mechanical safety--especially in large alternators.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "bipolar" in a variety of sentences. We hope that you will now be able to make sentences using this word.
