Home > Arts > Artists > F > Benjamin Franklin
Jean Jallabert (1712-1768)
Wall Art and Photo Gifts from Science Photo Library
Jean Jallabert (1712-1768)
Jean Jallabert, professor of physics and mathematics at Geneva, investigating the effects of points and knobs on electrical discharges. He is standing on a wax insulating platform, one hand touching an electrostatic generator and the other holding a pointed piece of wood. When its point nears one end of a conducting rod mounted on a pivot, the deflection of the rod caused by the discharge shows whether there is a positive or negative charge. Benjamin Franklin knew of these experiments and went on to study the theory of the Ôé¼╦£power of pointsÔé¼Ôäó, which formed the basis of his development of the lightning conductor. Jallabert analysed electricitys ability to stimulate muscles.In 1747 he started applying electrical stimulation to the paralyzed arm of a locksmith. After 3 months there was considerable improvement. This is considered to be the first application of electrotherapy
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6330687
© Sheila Terry
1749 18th Century Franklin Geneva History Of Science Lightning Conductors Electrotherapy Nollet
EDITORS COMMENTS
The captivating print captures Jean Jallabert, a renowned professor of physics and mathematics at Geneva, delving into the intriguing realm of electrical discharges. Standing on a wax insulating platform, Jallabert is seen engrossed in his investigation, with one hand touching an electrostatic generator and the other holding a pointed piece of wood. This peculiar setup allows him to analyze the effects of points and knobs on electrical discharges. It was through these experiments that Benjamin Franklin became aware of the theory known as the "power of points" which later formed the foundation for his groundbreaking work on lightning conductors. However, Jallabert's contributions extend beyond this discovery. In 1747, he began applying electrical stimulation to a locksmith's paralyzed arm, marking the first-ever application of electrotherapy. Over three months' time, significant improvement was observed in the locksmith's arm due to electricity's ability to stimulate muscles—an achievement that laid down crucial groundwork for future advancements in bioelectrics. This image not only showcases an important moment in scientific history but also highlights Jallabert's pioneering spirit and dedication to unraveling nature's mysteries. This remarkable photograph from Science Photo Library serves as a testament to both Jallabert’s profound impact on science during the 18th century and his role in shaping our understanding of electricity and its applications today.
MADE IN THE UK
Safe Shipping with 30 Day Money Back Guarantee
FREE PERSONALISATION*
We are proud to offer a range of customisation features including Personalised Captions, Color Filters and Picture Zoom Tools
SECURE PAYMENTS
We happily accept a wide range of payment options so you can pay for the things you need in the way that is most convenient for you
* Options may vary by product and licensing agreement. Zoomed Pictures can be adjusted in the Basket.
