This electromagnet was made by the workshop staff at the Science Museum, London. In 1825, English inventor William Sturgeon wound a coil of wire...
Reconstruction made in 1931. In 1825, English inventor William Sturgeon wound a coil of wire around an iron rod and made one of the first...
worker inspecting electronic component under magnifier in electromagnetics factory - 電磁鐵 個照片及圖片檔放大鏡, 磁石, 工廠
An electromagnet is used to pick up some of approximately 3,500 confiscated guns to be melted down at Gerdau Steel Mill on July 19, 2018 in Rancho...
Powerful electromagnet for the removal of scrap metal, France, photo from Les Merveilles des Sciences et de l'Industrie, by Eugene-Henri Weiss,...巴黎
Engraving depicting Heinrich Hertz's experiments of electromagnetic waves: demonstration proves James Clerk Maxwell's contention that a metallic...
Arc lamp with mechanism controlled by an electromagnet. Arc lamps were first demonstrated in the 1840s and by 1870, dynamo-electric machinery could...
Interest in designing electromagnetic engines grew following the discovery of electromagnetism in 1821 and by the late 1830s a number of designs had...
Interest in designing electromagnetic engines grew following the discovery of electromagnetism in 1821 and by the late 1830s a number of designs had...
Interest in designing electromagnetic engines grew following the discovery of electromagnetism in 1821 and by the late 1830s a number of designs had...
When the current is switched on, the electromagnet attracts a nearby piece of iron. The movement of the iron, known as the armature, can be used to...門鈴
After the discovery by Hans Christian Orsted of the magnetic effect of an electric current in 1820, and the invention of electromagnets a few years...
Interest in designing electromagnetic engines grew following the discovery of electromagnetism in 1821 and by the late 1830s a number of designs had...
Ernest Lawrence was an American physicist who worked from 1929 to produce particles sufficiently energetic for nuclear reactions. Linear accelerators...
Reconstruction made in 1925. In 1825, English inventor William Sturgeon wound a coil of wire around an iron rod and made one of the first...
This receiver printed the dots and dashes of morse code onto paper tape. The telegraph's electric current would energise the receiver's twin...
Ernest Lawrence was an American physicist who worked from 1929 to produce particles sufficiently energetic for nuclear reactions. Linear accelerators...
Large electromagnet by Ducretet. Large electromagnet by Ducretet, formerly the property of Spottiswoode Made by Ducretet, E. - 1879 - 1883 Associated...
Electromagnet and rotating copper disc, with brush, for demonstrating induced currents, 1889. Made by Harvey and Peak, this model demonstrates one of...
This electromagnet was built by Rex Richards and colleagues at Oxford University. Nuclear magnetic resonance allows scientists to investigate the...
Engraving of William Sturgeon who produced an improved electromagnet in 1821. This had a soft iron bar that was coated with shellac varnish to...
Rica Kellogg' 12-inch energised moving-coil loudspeaker with integral rectifier unit. This was marketed as an 'American hornless' loudspeaker and was...
In this picture taken on November 24, 2017 a worker operates an electromagnet to collect scrap metal to be melted to make manhole covers at a factory...
In this picture taken on November 24, 2017 a worker operates an electromagnet to collect scrap metal to be melted to make manhole covers at a factory...
An eye, ear, nose and throat specialist uses an electromagnet to remove shell splinters from the eye of a patient on board the US hospital ship 'USS...
Fox Photos photographer Derek Berwin is hoisted up on an electromagnet at the Boxmag works in Birmingham, in order to take a photograph of typist...磁石
Paths of alpha, beta, and gamma rays from a radium sample placed between poles of electromagnet, as used in Curies' laboratory, Paris. Engraving...
The principle of the Morse telegraph, 1887. 'Thus let E be a fixed electromagnet; the insulated wires of which are attached to the two binding...
Diagram of Bell's second telephone: Acoustic waves through N and A make the armature of the electromagnet connected to lever vibrate. New York, dated...
The research laboratory of Dr. Ernest Rutherford at the University of Cambridge. | Location: Cambridge, Cambridgeshire, England, UK.
electromagnets being held under magnifier on production line in electromagnetics factory - 電磁鐵 個照片及圖片檔
worker inspecting electromagnetic coil seen through large coil in electromagnetics factory - 電磁鐵 個照片及圖片檔電線, 磁石
worker inspecting electromagnetic coil seen through large coil in electromagnetics factory - 電磁鐵 個照片及圖片檔磁石, 工業, 電線
Keesom, Willem Hendrik - Physicist, Netherlands*21.06.1876-+- invented a method to freeze liquid helium - colleague W. J. Haas on electromagnet-...
Use of an electromagnet for the construction of railway lines- undated- Photographer: Hans G. Casparius- Published by: 'Berliner Morgenpost' Vintage...
Group of men and teenage boys break up an armature to reclaim the copper. The armature is an electrical engine component from a ship. They work in an...
Chicago, IL: Monster atom smasher of the University of Chicago, already the focus of the nuclear physics world, takes a stride toward completion as...迴旋加速器
An electromagnet gathers scrap metal at the Kaiser Steel plant in Fontana. Much of the metal was collected in a scrap metal drive to aid the war...
Dr. Stanley Livingston and Dr. Ernest Lawrence stand next to the 85-ton electromagnet device which was designed by Dr. Lawrence, Professor of Physics...
Magnetism, c1850. Educational plate showing various aspects of magnetism and electromagnetism including a dip needle, compass, the lifting power of...地球, 插圖
