Magnetic field of a solenoid
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Magnetic field of a solenoid
Magnetic field of a solenoid. Solenoid (centre) and iron filings (black) marking the field lines of its magnetic field. A solenoid is simply a coil of electrical wire. When electricity flows through the wire, a magnetic field is created. Any current flowing through a wire will have a magnetic field, but the coiling of a lot of wire produces a strong magnetic field like that of a bar magnet. This is a phenomenon known as electromagnetism, and the solenoid is known as an electromagnet. It can be used to magnetize materials like iron, and also to generate motion (as in an electric motor) and to generate electricity (as in a dynamo)
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Media ID 6284161
© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY
Class Room Demonstrating Demonstration Device Education Educational Electrical Electricity Electro Magnet Electromagnetic Electromagnetism Electronics Experiment Experimental Field Filing Iron Filings Lesson Line Lines Magnet Magnetic Magnetism Pattern School Solenoid Laboratory Physical
EDITORS COMMENTS
This print from Science Photo Library showcases the magnetic field of a solenoid, providing a visual representation of the invisible force at work. In the center of the image, we see a solenoid - a simple coil of electrical wire that becomes an electromagnet when electricity flows through it. The black iron filings elegantly trace out the intricate pattern of magnetic field lines surrounding the solenoid. The phenomenon depicted here is known as electromagnetism, where any current flowing through a wire generates its own magnetic field. However, in this case, with numerous coils tightly wound together, the resulting magnetic field resembles that of a powerful bar magnet. Beyond its aesthetic appeal, this mesmerizing display holds significant scientific implications. Solenoids can be employed to magnetize materials like iron and are instrumental in generating motion (as seen in electric motors) and producing electricity (as observed in dynamos). In an educational setting such as a laboratory or classroom, this photograph serves as an excellent tool for demonstrating and understanding key concepts related to magnetism and electromagnetism. It exemplifies how technology harnesses natural forces to create practical devices while fostering curiosity and knowledge about physics and electronics. Science Photo Library has once again captured both beauty and education within one frame by immortalizing this striking portrayal of electromagnetic phenomena using their expertise behind the lens.
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