Electromagnet Collection

The principle of the Morse telegraph, 1887
3480014 The principle of the Morse telegraph, 1887; (add.info.: The principle of the Morse telegraph, 1887. Thus let E be a fixed electromagnet; the insulated wires of which are attached to the two)

Diagram of Bell's second telephone, 1879
3479294 Diagram of Bell's second telephone, 1879; (add.info.: Diagram of Bell's second telephone: Acoustic waves through N (diaphragm) and A (lever)

Paths of alpha, beta, and gamma rays from a radium sample placed between poles of electromagnet
536622 Paths of alpha, beta, and gamma rays from a radium sample placed between poles of electromagnet, as used in Curies laboratory, Paris, 1904; (add.info.: Paths of alpha, beta)

Group of young women studying electro-magnets in normal school, Washington, D.C. (1899?)

Five-Needle Telegraph Instrument (chromolitho)
2802090 Five-Needle Telegraph Instrument (chromolitho) by English School, (20th century); Private Collection; (add.info.: Five-Needle Telegraph Instrument)

Eectromagnet above steel ingots, Park Gate Iron & Steel Co, Rotherham, South Yorkshire, 1964

Magnetism, c1850. Educational plate showing various aspects of magnetism and electromagnetism including a dip needle, compass, the lifting power of an electromagnet (12), Wheatstone telegraph (13)

Radium experiment, 1904. Artist: Poyet
Radium experiment, 1904. Paths of alpha, beta, and gamma particles from a radium sample placed between the poles of an electromagnet, as used in Marie and Pierre Curies laboratory, Paris

Illustration, electromagnet lifting red car

Cracker Ball released by electromagnet to crush scrap metal
Steel Cracker Ball released by electromagnet to crush scrap metal Date: circa 1920s

TELEGRAPH, 1832. Joseph Henrys signal telegraph apparatus of 1832, consisting of an electromagnet, a steel bar mounted on a pivot, and a bell. Wood engraving, American, 1888

determining that cathode rays (c) have definite mass because their bombardment against vanes (d, e)
J.J. THOMSONs EXPERIMENT determining that cathode rays (c) have definite mass because their bombardment against vanes (d, e)

Diagram by Heinrich Hertz from his Investigations into the Propagation of Electric Force, published in 1892
HERTZ EXPERIMENT, 1892. Diagram by Heinrich Hertz from his Investigations into the Propagation of Electric Force, published in 1892

Paths of alpha, beta, and gamma rays from a radium sample placed between poles of electromagnet, as used in Curies laboratory, Paris. Engraving published Paris, 1904

Electromagnet attracting iron filings

Computer hard disk read / write head, SEM
Computer hard disk read/write head. Coloured scanning electron micrograph (SEM) of the read and write electromagnetic device (head) of the hard disk of a computer

Teaching electromagnetism, circa 1899 C014 / 0454
Teaching electromagnetism. Group of young women studying electromagnets in a school classroom. This lesson is taking place in Washington DC, USA, and is thought to have taken place in around 1899

Faraday on electromagnets, 1832
Faraday on electromagnets. Page from the notebooks of British physicist Michael Faraday (1791-1867), showing notes and a diagram of a large electromagnet. These notes date from 1 November 1832

Magnet used by Faraday C016 / 3678
Faraday effect. A large electromagnet used by british scientist Michael Faraday (1791-1867) to demonstrate the Faraday effect

Faradays giant electromagnet
Electromagnetism. The Giant Electromagnet made by Michael Faraday in 1845 for his experiments on the effects of magnetic fields on matter

Gold detector, 1893
Gold detector, 19th-century artwork. Artwork from the 11th volume (first period of 1893) of the French popular science weekly La Science Illustree

Magnetism experiment, 1889 C013 / 8787
Magnetism experiment. 19th-century artwork of a permanent iron magnet in a form called a horseshoe magnet, placed on an electromagnet (two coils of wire around metal cores)

The Edson Electro-Magnetic Garter. Advertisement from and American newspaper, 1881
ELECTRO-MAGNETIC GARTER. The Edson Electro-Magnetic Garter. Advertisement from and American newspaper, 1881

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The electromagnet, a revolutionary invention in the world of science and technology, has played a pivotal role in various fields throughout history. From its early applications such as the Five-Needle Telegraph Instrument to its modern-day use in crushing scrap metal with a Cracker Ball, this powerful device has continuously amazed us. In 1964, at the Park Gate Iron & Steel Co in Rotherham, South Yorkshire, an electromagnet was seen hovering above steel ingots. Its magnetic force captivatingly showcased its ability to manipulate objects effortlessly. During the mid-19th century, magnetism became a subject of great interest. Artists like Poyet depicted mesmerizing experiments involving radium and electromagnets. These illustrations captured the enchanting allure of scientific exploration during that time. One notable figure who extensively utilized electromagnets was Thomas Edison. The American inventor's brilliance shone through his inventions that harnessed this incredible force. His contributions forever changed our lives and paved the way for countless innovations. Another influential scientist who delved into electromagnetic phenomena was Michael Faraday. Through his lectures on electricity and groundbreaking experiments with cathode rays, he unraveled their properties - determining their mass and electric charge by observing their interaction with magnetic fields. Heinrich Hertz further expanded our understanding of electromagnetism through his investigations into electric force propagation. In 1892, he published diagrams depicting electromagnetic waves formed around his oscillator when sparks appeared between two metal balls - revealing yet another astonishing aspect of this phenomenon. Moreover, alpha, beta, and gamma rays emitted from radioactive substances were observed traveling distinct paths when placed between poles of an electromagnet. This discovery shed light on radiation's behavior under magnetic influence - opening doors to advancements in nuclear physics and medicine. From telegraph apparatuses developed by Joseph Henry to cutting-edge technologies used today like lifting cars with an electromagnet; these captivating glimpses into history highlight how this extraordinary invention continues to shape our world.