Home > Popular Themes > Physicists
Ayrton-Jones ampere balance C016 / 2034
Wall Art and Photo Gifts from Science Photo Library
Ayrton-Jones ampere balance C016 / 2034
Ayrton-Jones ampere balance. This apparatus is used to measure a standard value for the ampere, the international (SI) unit of electric current. It balances the force between two current-carrying coils (left and right) and a known weight. Invented in 1898 by British physicists William Edward Ayrton and John Viriamu Jones, it was used from 1907 by the UKs National Physical Laboratory (NPL) to determine the ampere. Limitations in this method mean that a device called a watt balance is now used instead. New definitions of the ampere have been proposed for consideration in 2014. Photographed at the NPL, Teddington, UK
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9216475
© NATIONAL PHYSICAL LABORATORY CROWN COPYRIGHT/SCIENCE PHOTO LIBRARY
1898 1900s 1907 Ampere Apparatus Balance Balancing Coil Coils Device Electric Current Electricity Force Measurement Measuring Metrology Museum National Measurement Institute National Physical Laboratory Si Unit Standard Weight Blue Background Laboratory William Edward Ayrton
EDITORS COMMENTS
This print showcases the Ayrton-Jones ampere balance C016/2034, an extraordinary apparatus used to measure the standard value for the ampere, which is the international unit of electric current. The device ingeniously balances the force between two current-carrying coils on either side and a known weight in order to determine accurate measurements. Invented by British physicists William Edward Ayrton and John Viriamu Jones in 1898, this groundbreaking invention was employed by the UK's National Physical Laboratory (NPL) from 1907 onwards to establish precise values for electrical currents. Although this historical device played a crucial role in metrology during its time, advancements have led to its replacement with a more modern instrument called a watt balance due to certain limitations. Nevertheless, it remains an iconic symbol of technological progress and scientific innovation. The photograph captures this remarkable piece of equipment against a serene blue background within the NPL premises located in Teddington, United Kingdom. Its still life composition emphasizes both its historical significance and technical intricacy. As we admire this relic from the late 19th century, we are reminded of how far our understanding of electricity has come since then. This image serves as a testament to human curiosity and relentless pursuit of knowledge that continues even today with proposed new definitions for the ampere being considered since 2014.
MADE IN AUSTRALIA
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 Cart.
