Magnetic field from an electric current Stock Photos and Images
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Magnetic field from an electric current Stock Photos and Images
RMT96499–Deviation of the magnetic needle by current of battery. Hans Christian Ørsted (August 14, 1777 - March 9, 1851) was a Danish physicist and chemist who discovered that electric currents create magnetic fields, an important aspect of electromagnetism. In 1820 Ørsted noticed a compass needle deflected from magnetic north when an electric current from a battery was switched on and off, showing a relationship between electricity and magnetism.
RM2JCGX1R–Experiment showing an electromagnet supporting the weight of a boy. From L'Univers Illustre, published Paris, 1859
RM2HBRB4P–An old engraving of Wilde’s Machine, a magneto-electric device of the mid-1800s. It is from a Victorian book of the 1890s on discoveries and inventions during the 1800s. Here a small magneto (top) powers the field coils of a larger alternator below. Henry Wilde (1833–1919), from Manchester, England, used his self-made fortune to indulge his interest in electrical engineering. Wilde invented the powerful dynamo-electric machine, or self-energising dynamo. Wilde was fond of spectacular demonstrations, such as the ability of his machine to melt iron bars.
RM2E21CK7–Induced current from Faraday's experiment: moving a small coil in or out of a large one,the magnetic flux through the large coil changes, inducing a current measured by a galvanometer
RM2WJT5FJ–An old engraving of a large electromagnet from the 1800s. It is from Victorian book of the 1890s on sports, games and pastimes. Here the device is using electrical power to lift weights off the ground. An electromagnet is a where a magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole in the centre of the coil. The magnetic field disappears when the current is turned off. British scientist William Sturgeon invented the electromagnet in 1824.
RFJB35EG–Model of Barlow's Wheel, the first electric motor in the world. A wheel arranged in a magnetic field (Red=north) carries a current from a mercury comm
RMMF8TA1–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RFM7DW1H–Group of coils with magnetic core and copper winding. Beautiful close-up of toroidal inductors and the solenoid on background from hexagonal mesh.
RMPEPN5C–Senior Airman Max Bustamante, 22nd Maintenance Squadron non-destructive inspection Airman, checks the amount of magnetic current emanating from a part, Jan. 25, 2016, at McConnell Air Force Base, Kan. NDI-Airmen run an electric current through aircraft parts to demagnetize the part so that it does not interfere with the compass on the aircraft while in flight. (U.S. Air Force photo/Airman Jenna K. Caldwell)
RF2F84PM1–Closeup of rotor and stator from open electric EC motor in computer fan with white plastic blades. Red copper wire coils and iron ferromagnetic sheets.
RF2JYM9YF–Two big chokes for you to remove all the noize from the system - close up photo. Background picture.
RFHTTG0N–Electrical Power Transmission / The bulk movement of electrical energy from a generating site to an electrical substation.
RM2AG4685–. Electric transmission of power : its present position and advantages. TiniHift ^(nTrpiT- iIIhIiI iiiUpiii, JUUIlll^l lUIIiUlll.. not too large that powerful currents are developed, owingto the strong magnetic field produced by the circulationof the currents themselves around the field magnets.By diverting from external work a portion of the c 18 ELECTRIC TKANSMISSION OF POWEK, current of the machine, and using it either alone, or inconnection with the rest of the current for working thefield magnets, a permanent field may be obtained. Mr. Brush winds the cores of the field magnets with aquan
RMMA7AR0–. Electronic apparatus for biological research . Magnetic flux Figure 42.6 difficult to minimize the interference by altering the plane of the loop. Fortunately it is often possible to alter the direction of the field. Radiated electromagnetic fields—Whenever an alternating electric current flows round a circuit, systems of electric and magnetic fields may be thought of as growing out of, and collapsing back into, the conductors in sympathy with the successive growth and decay of current. These fields represent energy alternatively derived from, and returned to, the electric circuit. How- ever
RF2D7C032–Electromagnet icon. Simple element from digital disruption collection. Line Electromagnet icon for templates, infographics and more
RMT963XG–Deviation of the magnetic needle by current of battery. Hans Christian Ørsted (August 14, 1777 - March 9, 1851) was a Danish physicist and chemist who discovered that electric currents create magnetic fields, an important aspect of electromagnetism. In 1820 Ørsted noticed a compass needle deflected from magnetic north when an electric current from a battery was switched on and off, showing a relationship between electricity and magnetism.
RMMF8TAT–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMPEPN5D–Senior Airman Max Bustamante, 22nd Maintenance Squadron non-destructive inspection Airman, checks the amount of magnetic current emanating from a part, Jan. 25, 2016, at McConnell Air Force Base, Kan. Demagnetization is a final process completed by NDI-Airmen after defect identification and prevention inspections in order to send the part back to the aircraft mechanics for reinstallation. (U.S. Air Force photo/Airman Jenna K. Caldwell)
RM2AG1Y5F–. Electrical world. fig. s —new type of electric .UT0M0BILE. exhibited their searcnlights, which are finding e.xtensive use on au-tomobiles. Direct Current Dynamos and Motors. A line of direct-current machines, of bipolar and multipolardesign, is being introduced by the Hertner Electric Company, ofCleveland, Ohio. These machines range in sizes from % to 15 hpand are adapted for lighting, power and elevator work. Electricallythe intention of the designers seems to have been directed towardsmaking the magnetic circuit of the field as stiff as possible, resultingin a decrease in the speed or arm
RMMA7BN3–. Electronic apparatus for biological research . now seen to be equal and in opposite directions; a circulating current flows within the resonant circuit. The circulating current is jtoCV = jcoC . liLjCR) The current magnification of the circuit is Circulating current Generator current = jojLlR = JQ Physically, the circulating current represents the transfer of energy back and forth between electric field in the capacitance and magnetic field around the inductance. At each transfer some energy is lost in the resistance, and this is replaced by a small current from the generator. Impedance of p
RMMF8TA0–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2AFPG5H–. Popular science monthly. tothe presence within the earth of permanent magnets, no such theory canapply to the sun. If magnetic phenomena are to be found there, theymust result from other causes. The familiar case of the helix illustrates how a magnetic field isproduced by an electric current flowing through a coil of wire. Butaccording to the modern theory, an electric current is a stream of elec-trons. Thus a stream of elections in the sun should give rise to amagnetic field. If the electrons were whirled in a powerful vortex,resembling our tornadoes or water-spouts, the analogy with the wi
RMMF8TA6–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
![[Electric engineering.] . ELECTRIC LIGHTING. 19 blow-out coils, and unless they were of very low resistancethere would be considerable loss of energy. The air gap isbetween the vanes c, c. Fig. 6 shows how the arresters are con-nected. Current from the dynamo D flows through the coils Aand out on the line, thus setting up a magnetic field between r^m^ V/Ww r 2.1 A 1 ,. X-—X—X—X—X- V—X—X X—X- D &%7 Fig. 6. the pole pieces. When a discharge comes in over the line, itjumps from c to c and passes off to the ground. Thecoils A, A act as choke, or reactance, coils to keep the dis-charge out of the d Stock Photo](https://c8.alamy.com/comp/2AX2GBF/electric-engineering-electric-lighting-19-blow-out-coils-and-unless-they-were-of-very-low-resistancethere-would-be-considerable-loss-of-energy-the-air-gap-isbetween-the-vanes-c-c-fig-6-shows-how-the-arresters-are-con-nected-current-from-the-dynamo-d-flows-through-the-coils-aand-out-on-the-line-thus-setting-up-a-magnetic-field-between-rm-vww-r-21-a-1-x-xxxx-vxx-xx-d-7-fig-6-the-pole-pieces-when-a-discharge-comes-in-over-the-line-itjumps-from-c-to-c-and-passes-off-to-the-ground-thecoils-a-a-act-as-choke-or-reactance-coils-to-keep-the-dis-charge-out-of-the-d-2AX2GBF.jpg "[Electric engineering.] . ELECTRIC LIGHTING. 19 blow-out coils, and unless they were of very low resistancethere would be considerable loss of energy. The air gap isbetween the vanes c, c. Fig. 6 shows how the arresters are con-nected. Current from the dynamo D flows through the coils Aand out on the line, thus setting up a magnetic field between r^m^ V/Ww r 2.1 A 1 ,. X-—X—X—X—X- V—X—X X—X- D &%7 Fig. 6. the pole pieces. When a discharge comes in over the line, itjumps from c to c and passes off to the ground. Thecoils A, A act as choke, or reactance, coils to keep the dis-charge out of the d Stock Photo")
RM2AX2GBF–[Electric engineering.] . ELECTRIC LIGHTING. 19 blow-out coils, and unless they were of very low resistancethere would be considerable loss of energy. The air gap isbetween the vanes c, c. Fig. 6 shows how the arresters are con-nected. Current from the dynamo D flows through the coils Aand out on the line, thus setting up a magnetic field between r^m^ V/Ww r 2.1 A 1 ,. X-—X—X—X—X- V—X—X X—X- D &%7 Fig. 6. the pole pieces. When a discharge comes in over the line, itjumps from c to c and passes off to the ground. Thecoils A, A act as choke, or reactance, coils to keep the dis-charge out of the d
RMMF8TAW–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2CRMH5F–. Practical wireless telegraphy; a complete text book for students of radio communication . going that a solenoid has north and southpoles and, in fact, possesses all the properties of a permanent steel magnet withthe advantage that the magnetism in the case of the solenoid is entirely undercontrol. The strength of the magnetic field of a solenoid is proportional to the strengthof the electric current passing through it and the number of turns of wire com-posing the coil, but the magnetizing power may be increased from 200 to 2,000times by merely inserting an iron core or bar of soft iron with
RMMF8TAC–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFG6R–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2CRKD97–. Dental and oral radiography; a textbook for students and practitioners of dentistry . due to the core, plus the field due to the currentpassing through the coil. Thus far we have discussed the fact that a magneticsubstance in the field of an ordinary magnet, or a con-ductor carrying an electric current, is magnetized. Thisphenomenon, we know, is due to magnetic induction. Itis also a fact that an electric current may he induced ina conductor hy causing the latter to move through a mag-netic field. It makes no difference whether this fieldcomes from an ordinary magnet or from an electriccharg
RMMCFFNT–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2CRT23N–. Dental and oral radiography : a textbook for students and practitioners of dentistry . ld due to the core, plus the field due to the currentpassing through the coil. Thus far we have discussed the fact that a magneticsubstance in the held of an ordinary magnet, or a con-ductor carrying an electric current, is magnetized. Thisphenomenon, we know, is due to magnetic induction. Itis also a fact that an electric current may be induced ina conductor by causing the latter to move through a mag-netic field. It makes no difference whether this fieldcomes from an ordinary magnet or from an electricch
RMMCFFXD–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2CGXHH7–. Electric railway journal . switch No. 60 through starting motor. This condition is taken care of by apolarized motor relay (No. 7), the design and operationof which are as follows: No. 7 relay consists of a tiny motor with a perma-nent magnetic field. Its armature is geared to a smallskeleton drum switch having four positions (see illus-tration). The contacts made in the several positionsare designated by 1A, IB, 7C, and ID in the diagram.The armature of this motor is supplied from the con-verter direct-current brushes during the starting pe- 950 Electric Railway Journal Vol. 53, No. 20 riod
RMMCFFNJ–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RM2CR65KK–. The Street railway journal . e-fore in demand, and to meet it the General Electric Companyinvented the automatic circuit breaker shown herewith. This breaker is now constructed to meet almost every pos-sible variation of current from 150 to 3,000 amperes. The prin- poles of which enclose a chute containing supplementary con-tact points; these supplementary contacts break the circuit justafter the main contacts have separated. When the latch trips, the main bridge drops, forcing thewhole current to pass through the small magnets. This resultsin the creation of an intense magnetic field betwee
RMMCFFP5–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRM2X8Y–. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. ELECTRIC WAVE TELEGEAPHY FLEMING. 189 the earth. (See fig. 17.) Let a current be supposed to flow round it, in clockwise direction. Then it creates a magnetic field, the direction of which along the surface of the earth in a direction at right angles to the plane of the circuit, and at equal distances from the center, is toward the spectator on both sides. Suppose, then, that a wire equal in length to one side of the square is placed in con
RMMCFG28–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRGFPRM–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 314 bulletin: museum of comparative zoology. is in general this:— if a beam of light falls upon the thermal junction (via aperture a in side of box), an electric current is generated in the circuit; and since a wire carrying a current is surrounded by a magnetic field, this loop, being converted into a temporary magnet and free to rotate will adjust itself like a magnetic needle to the influence of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili
RMMCFFP8–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRGG361–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 314 bulletin: museum of comparative zoology. is in general this:— if a beam of light falls upon the thermal junction (via aperture a in side of box), an electric current is generated in the circuit; and since a wire carrying a current is surrounded by a magnetic field, this loop, being converted into a temporary magnet and free to rotate will adjust itself like a magnetic needle to the influence of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
RMMCFG3E–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRHT2CT–. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. 484 BELL SYSTEM TECHNICAL JOURNAL then givfes tVe contribution to the conductance from the normal concen- tration of holes. In a second experiment 1 ma of the current of A ma flowing in the fila- ment was injected from an emitter point near one end of the filament. From the probe potentials, estimates have been made of the change in PROBE POINTS. -«—Ib=4ma (a) NO MAGNETIC FIELD, NORMAL HOLE CONCENTRATION. Please note that these images are extracted from scanned page im
RMMCFFP2–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
![. Airborne radar. Airplanes; Guided missiles. 12-5] THE CATHODE RAY TUBE 623 Focusing of the electron beam is accomplished by either electric or magnetic fields. A magnetically focused CRT is shown in Fig. 12-8. The control grid is followed by a second grid which serves to screen the region between the cathode and control grid from the high accelerating potential of the anode and thereby reduces the control voltage necessary to cut off the beam current. This electrode serves no focusing function. Focusing in a magnetic system is accomplished by means of a longitudinal magnetic field (of circul Stock Photo](https://c8.alamy.com/comp/RPXHR5/airborne-radar-airplanes-guided-missiles-12-5-the-cathode-ray-tube-623-focusing-of-the-electron-beam-is-accomplished-by-either-electric-or-magnetic-fields-a-magnetically-focused-crt-is-shown-in-fig-12-8-the-control-grid-is-followed-by-a-second-grid-which-serves-to-screen-the-region-between-the-cathode-and-control-grid-from-the-high-accelerating-potential-of-the-anode-and-thereby-reduces-the-control-voltage-necessary-to-cut-off-the-beam-current-this-electrode-serves-no-focusing-function-focusing-in-a-magnetic-system-is-accomplished-by-means-of-a-longitudinal-magnetic-field-of-circul-RPXHR5.jpg ". Airborne radar. Airplanes; Guided missiles. 12-5] THE CATHODE RAY TUBE 623 Focusing of the electron beam is accomplished by either electric or magnetic fields. A magnetically focused CRT is shown in Fig. 12-8. The control grid is followed by a second grid which serves to screen the region between the cathode and control grid from the high accelerating potential of the anode and thereby reduces the control voltage necessary to cut off the beam current. This electrode serves no focusing function. Focusing in a magnetic system is accomplished by means of a longitudinal magnetic field (of circul Stock Photo")
RMRPXHR5–. Airborne radar. Airplanes; Guided missiles. 12-5] THE CATHODE RAY TUBE 623 Focusing of the electron beam is accomplished by either electric or magnetic fields. A magnetically focused CRT is shown in Fig. 12-8. The control grid is followed by a second grid which serves to screen the region between the cathode and control grid from the high accelerating potential of the anode and thereby reduces the control voltage necessary to cut off the beam current. This electrode serves no focusing function. Focusing in a magnetic system is accomplished by means of a longitudinal magnetic field (of circul
RMMCFFNX–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRH02G3–. Bulletin. Science. Figure 20.—Some of the various means used by Faraday to induce an electric current by magnetism: (a) coil to induce a momentary current in another coil by making or breaking the galvanic circuit in the first coil, (A, c) inducing a momentary current by making or breaking a magnetic circuit, (d) inducing a momentary current by moving a magnet through a coil of wire, and (e) inducing a continuous current by rotating a conducting disk in a magnetic field. The last was the converse of the Barlow wheel experiment. From Philosophical Transactions, 1832, vol. 122, pi. 3. using th
RMMCFFNW–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMRH02GN–. Bulletin. Science. Figure 20.—Some of the various means used by Faraday to induce an electric current by magnetism: (a) coil to induce a momentary current in another coil by making or breaking the galvanic circuit in the first coil, (A, c) inducing a momentary current by making or breaking a magnetic circuit, (d) inducing a momentary current by moving a magnet through a coil of wire, and (e) inducing a continuous current by rotating a conducting disk in a magnetic field. The last was the converse of the Barlow wheel experiment. From Philosophical Transactions, 1832, vol. 122, pi. 3. using th
RMMCFFXF–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFFP4–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFFYW–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFG5E–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFFP9–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
RMMCFFP7–Large industrial powerful horseshoe magnet made from component parts attracting iron nails, galvanised staples, clouts demonstrating magnetic field
Search Results for Magnetic field from an electric current Stock Photos and Images (60)
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