Magnetograph, 19th century

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Magnetograph, 19th century

Magnetograph. This apparatus was erected by the French physicist Eleuthere Mascart (1837-1908) in Mountsouris, Paris, France. It was designed to measure the variations in the local magnetic field, with a system of light beams and mirrors used to co-ordinate the different parts of the apparatus. At lower left is a magnetic balance. At centre left are temperature and humidity monitors. Three solenoids (marked H ) help track the time. The results are recorded by the apparatus at centre right. Artwork from the eighth volume (second period of 1891) of the French popular science weekly La Science Illustree

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Media ID 6363043

© SCIENCE PHOTO LIBRARY

1891 Annual Volume Components Device Diagram Experimenting France French La Science Illustree Louis Figuier Magazine Magnetic Field Magnetism Measurement Measurements Mirrors Observatory Optical Optics Popular Science Researching Weekly Laboratory Light Beams Mono Chrome Physical Synchronisation Synchronised

EDITORS COMMENTS
This print showcases the Magnetograph, a remarkable 19th-century apparatus erected by French physicist Eleuthere Mascart in Mountsouris, Paris. Designed to measure variations in the local magnetic field, this intricate device utilized a system of light beams and mirrors to coordinate its different components. The artwork from La Science Illustree depicts various elements of the magnetograph, including a magnetic balance at lower left for precise measurements. At center left, temperature and humidity monitors were strategically placed to ensure accurate readings. Three solenoids marked "H" aided in tracking time synchronization. The results obtained by this sophisticated instrument were recorded at center right. The image provides us with a glimpse into the world of scientific research during the late 1800s. With its combination of optical technology and experimentation, this magnetograph played an essential role in advancing our understanding of magnetism. Published as part of the eighth volume (second period) of La Science Illustree – a popular science weekly magazine – this artwork represents one among many contributions made by Louis Figuier's publication to disseminate knowledge across Europe. Overall, this historical photograph not only highlights technological advancements but also serves as a testament to human curiosity and ingenuity in unraveling the mysteries of physics through meticulous laboratory work.

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