| 单词 | self-induction |
| 例句 | In addition to succumbing to shoddy abortionists, many women would die through self-induction like trying to throw themselves down stairs, taking poisons or using coat hangers. This is what it was like trying to get an abortion in the United States before 1973 2022-05-07T04:00:00Z Some prefer self-care and turn to herbs and supplements to manage most of their health needs, and some women see self-induction as less invasive and more natural than a clinic-based abortion. Should over-the-counter medical abortion be available? | Daniel Grossman 2017-04-28T04:00:00Z And in fact, self-induction is in a legal gray area, and many enterprising prosecutors have charged women who carried out their own abortions with crimes. ‘Please I am out of options’: inside the murky world of DIY abortions 2016-11-21T05:00:00Z “Poverty, limited resources, and local facility closures limited women’s ability to obtain abortion care in a clinic setting and were key factors in deciding to attempt abortion self-induction,” the Texas Policy Evaluation Project found. Home abortions rise after Texas law closes clinics 2015-11-18T05:00:00Z About a quarter of states also still have old laws that make it a crime to help someone else with a self-induction. A Mother in Jail for Helping Her Daughter Have an Abortion 2014-09-22T04:00:00Z “Self-induction with mife and miso is not your mother or your grandmother’s self-induction. Provided that women have good knowledge about using the medication properly, it’s a great option.” The Dawn of the Post-Clinic Abortion 2014-08-28T04:00:00Z Think, for example, of the "coefficient of self-induction," and seek for its visualised mental image. Popular scientific lectures 2012-04-24T02:00:17.273Z In operating an induction coil with rapidly alternating currents, we realize with astonishment, for the first time, the great importance of the relation of capacity, self-induction and frequency as regards the general results. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Sec′ohmmēter, an instrument for measuring the coefficient, of electrical self-induction. Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) 2012-01-30T03:00:19.113Z Wade, the laws against helping with self-induction aimed to protect desperate women from dangerous procedures and unscrupulous providers. A Mother in Jail for Helping Her Daughter Have an Abortion 2014-09-22T04:00:00Z Thus the phenomena of self-induction are accounted for by the supposed medium. Heroes of Science: Physicists 2012-01-17T03:00:17Z But if, after having had sufficient discipline, he lights upon the phrase "coefficient of self-induction," he knows immediately what that term requires of him. Popular scientific lectures 2012-04-24T02:00:17.273Z A single coil wound upon a core has a high self-induction; for this reason, principally, this type of motor was chosen to perform the experiment. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z In a single circuit, consisting of a straight wire and a parallel return wire there is little or no self-induction. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z If we take pairs of elements in the same circuit, then Neumann’s formula gives us the coefficient of self-induction of the circuit or the potential of the circuit on itself. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Still, however rapidly the circuit is broken, self-induction causes a spark to fly across the gap until the energy of the current is used up. Heroes of Science: Physicists 2012-01-17T03:00:17Z In transmitting over ordinary conductors where the initial voltage is fairly high and the self-induction of the circuit very great, the use of the condenser will be found to be absolutely essential. Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 The devices m m are supposed to be of high self-induction so as to bring the frequency of the circuit more or less to that of the dynamo. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The effect of the iron core is to increase the self-induction. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z The plates were connected by a rectangular circuit whose self-induction L was calculated from the dimensions of the rectangle and the size of the wire. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z With such currents it is necessary to consider the effects of self-induction in the circuit and of electrostatic capacity. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" To this there is added at the instant when the transmitter resistance increases, the e. m. f. of self-induction in the coil, LA; and so the total e. m. f. applied to the tube is momentarily increased. Letters of a Radio-Engineer to His Son The simplest is probably to insert a large self-induction coil in series with the circuit L. When the arc is established, as by the discharger illustrated in Fig. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Because when the current is flowing it cannot be stopped instantly on account of self-induction, that is, it acts as though it possessed weight. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z He added definiteness to the idea of the self-induction or inductance of an electric circuit, and gave a mathematical expression for the current flowing out of a Leyden jar during its discharge. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Of these, it is believed that 4,000, at a conservative estimate, are criminally induced either through the agency of criminal abortionists or by self-induction, either of which is equally dangerous. Report of the Committee of Inquiry into the Various Aspects of the Problem of Abortion in New Zealand At first they object and during that instant they express their objection by an e. m. f. of self-induction which opposes the generator voltage. Letters of a Radio-Engineer to His Son When a circuit is connected to an alternator there are an indefinite number of values for capacity and self-induction which, in conjunction, will satisfy the condition of resonance. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z This is prevented by self-induction in the primary winding, which opposes any change in the current strength. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Perhaps the only useful thing you've got on this savage world is a way to make magnetic fields with minus self-induction. Long Ago, Far Away The self-induction of a coil in an overdrive field was not the same as in normal space. Talents, Incorporated Choking Coil.—The self-induction in a current of this kind is utilized in transmitting electricity to great distances. Electricity for Boys Usually, also, an adjustable self-induction coil in series with the circuit has been employed in these experiments. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z We are surprised to find a very weak extra current, a practical absence of self-induction on breaking, or, at least, a giving out of energy in nowise comparable to that on making. Scientific American Supplement, No. 711, August 17, 1889 Later Van Rysselberghe changed these arrangements for the still simpler device of introducing permanently into the circuit either condensers or else electro-magnets having a high coefficient of self-induction. Scientific American Supplement, No. 443, June 28, 1884 Induction within a circuit occurs because the circuit possesses inductance; it is called self-induction. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. This result we accomplish by the introduction of the choking coil, which has the effect of absorbing the excessive 50 volts, the action being due to its quality of self-induction, referred to in the foregoing. Electricity for Boys This I may do by inserting a self-induction coil in the path of the discharges, or by augmenting the capacity of the condensers. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Separating the strands of a divided conductor increases the length of magnetic paths around it, and so diminishes the self-induction. Scientific American Supplement, No. 711, August 17, 1889 It will be noted that the time constant of a circuit can be reduced either by diminishing the self-induction or by increasing the resistance. Scientific American Supplement, No. 787, January 31, 1891 The self-induction of a telephone line is smaller as its wires are closer together. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. The best way is undoubtedly to use the condenser in series with the primary and with the alternator, and to adjust its capacity so as to annul the self-induction of both the latter. Experiments with Alternate Currents of High Potential and High Frequency A number of experiments are then shown, illustrating the effects of frequency, self-induction and capacity; then a number of ways of operating motive and other devices by the use of a single lead. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z When the strips were allowed to lie closely together, the short conductor showed an enormous self-induction, which cut down the effective potential at its ends near the work. Scientific American Supplement, No. 711, August 17, 1889 In reality the current is not governed either by the self-induction or by the resistance alone, but by the ratio of the two. Scientific American Supplement, No. 787, January 31, 1891 This would need a large self-induction, and a small change of speed would stop the effect. Scientific American Supplement, No. 795, March 28, 1891 In operating an induction coil with rapidly alternating currents, we realize with astonishment, for the first time, the great importance of the relation of capacity, self-induction and frequency as regards the general result. Experiments with Alternate Currents of High Potential and High Frequency We now come to a new class of motors in which resort is had to condensers for the purpose of developing the required difference of phase and neutralizing the effects of self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Its condition is discoverable, however, by the test of self-induction to currents of different direction. Scientific American Supplement, No. 711, August 17, 1889 That is to say, if there is self-induction as well as resistance in the circuit, the amateur rule does not tell you the best way of arranging the battery. Scientific American Supplement, No. 787, January 31, 1891 There is as yet no authoritative statement as to exactly what happens, and it is generally assumed that the effect depends on the relation of capacity to self-induction, and is a sort of resonator action. Scientific American Supplement, No. 795, March 28, 1891 Were a secondary closed coil wound upon the core, it would tend to diminish the self-induction, and then it would be necessary to employ a much higher frequency and potential. Experiments with Alternate Currents of High Potential and High Frequency To produce this kind of discharge the number of alternations per second must not be too great for the coil used; and, generally speaking, certain relations between capacity, self-induction and frequency must be observed. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The considerations just given concern the loss of field or the shortening and apparent disappearance of the magnetic lines or circuits, as giving rise to the self-induction or increased potential on breaking. Scientific American Supplement, No. 711, August 17, 1889 Let E = 2 volts; R = 1 ohm; and let us take a relatively large self-induction, so as to exaggerate the effect; say let L = 10 quads. Scientific American Supplement, No. 787, January 31, 1891 He had studied and experimented with electromagnets in enormous variety, and knew their peculiarities in charge and discharge, lag, self-induction, static effects, condenser effects, and the various other phenomena connected therewith. Edison, His Life and Inventions A single coil wound upon a core has a high self-induction; for this reason principally, this type of motor was chosen to perform the experiment. Experiments with Alternate Currents of High Potential and High Frequency Another difficulty will be encountered in the capacity and self-induction necessarily possessed by the coil. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z But little self-induction now on making energy not absorbed. Scientific American Supplement, No. 711, August 17, 1889 I may here refer to some determinations made by M. Vaschy,4 respecting the coefficients of self-induction of the electromagnets of a number of pieces of telegraphic apparatus. Scientific American Supplement, No. 787, January 31, 1891 This arrangement is simpler in construction than the bobbin winding, and is less liable to generate self-induction current in the armature. Scientific American Supplement, No. 392, July 7, 1883 If it act so, then in a vacuum tube even of great length, and no matter how strong the current, self-induction could not assert itself to any appreciable degree. Experiments with Alternate Currents of High Potential and High Frequency Striking effects are produced by proper adjustments of capacity and self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z At once we find a very strong counter potential or opposing self-induction developed. Scientific American Supplement, No. 711, August 17, 1889 Also let the coefficient of self-induction of the electromagnet and circuit be 6 quadrants. Scientific American Supplement, No. 787, January 31, 1891 Copper being less susceptible of self-induction than iron, is preferred for trunk lines. The Story of Electricity The armature coils in this case, as in the previous figure, are wound for different self-induction to correspond with the field coils. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z If the arc be interrupted by the interposition of a glass plate, the capacity of the condenser obtained counteracts the self-induction, and a stronger current is made to pass. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The total magnetism which could be set up by a current would be lessened, and the self-induction, therefore, lessened. Scientific American Supplement, No. 711, August 17, 1889 The circuit A is to have the higher self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The better results are obtained when the primary has a low self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The primary coils D in this case have a low self-induction and high resistance, while the coils E F, included in the secondary circuit, have a high self-induction and low resistance. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z These circuits are of different self-induction, and may be made so in various ways. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z This done, we break the reversed current without much effect of self-induction. Scientific American Supplement, No. 711, August 17, 1889 On this principle Mr. Tesla constructs a motor having independent field circuits of different self-induction, which are joined in derivation to a source of alternating currents. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z But when the frequency of the impulses is very great, the flow of the current is practically determined by self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Now self-induction can be overcome by combining it with capacity. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The armature coils are wound to correspond with the field-coils with respect to their self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z By spreading apart the strips so as to lengthen a line around the conductor, the self-induction could be easily made less than 35 per cent. of what it had been before. Scientific American Supplement, No. 711, August 17, 1889 It is simpler and safer to join the condenser in series with the self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z But the chief determining factor is the relation of the self-induction and capacity of coil C and plate P1 and the frequency of the currents. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z It may be caused by ohmic resistance or self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Furthermore, in order to approximate the magnetic quantities of the poles excited by these coils, Mr. Tesla employs in the self-induction circuit cores much longer than those in the other or resistance circuit. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Hence the self-induction of a strand, coil or conductor of the same section varies with the rapidity of current changes, owing to the conduction being uneven. Scientific American Supplement, No. 711, August 17, 1889 The moral is, use self-induction instead of resistance. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z By taking a coil with a very large self-induction the critical capacity is reduced to a very small value, and the capacity of the coil itself may be sufficient. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z In this manner both capacity and self-induction were adjusted to suit the dynamo frequency. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Let it be assumed that an ordinary alternating current generator is connected up in a circuit of practically no self-induction, such, for example, as a circuit containing incandescent lamps only. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z As regards the rise of potential through resonant action, of course, theoretically, it may amount to anything since it depends on self-induction and resistance and since these may have any value. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z To sum up, the requirements for constant current are: Weak magnetic connection between the induced and inducing circuits, greatest possible self-induction with the least resistance, greatest practicable rate of change of the current. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Their arc light machines have weak fields, large armatures, with a great length of copper wire and few commutator segments to produce great variations in the current's strength and to bring self-induction into play. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Increasing the self-induction of the primary reduces the e. m. f. induced in the secondary, whilst lengthening the secondary does not increase the e. m. f. per unit length. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The motor having, say, eight poles contains two field-circuits A and B, of different self-induction. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z As a consequence of the self-induction of the coil and the high frequency, the current is minute while there is a corresponding rise of pressure. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Now, it is quite certain that at any point within a certain radius of the source S a properly adjusted self-induction and capacity device can be set in action by resonance. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z |
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