The Anderson Bridge, developed in 1891 by Professor Alexander Anderson, recognised as a landmark in electrical engineering innovation

One of University of Galway’s former presidents has been recognised with a prestigious commemoration for his groundbreaking invention in electrical measurement, more than 130 years on from the discovery.

IEEE - the world's largest technical professional organisation advancing technology for humanity - has formally dedicated an IEEE Milestone for the Anderson Bridge which was developed at the University in 1891 by Professor Alexander Anderson.

The recognition is marked by a commemorative plaque now on permanent display in the University’s Alice Perry Engineering Building, named after the first woman to graduate in engineering in Ireland and the UK in 1913.

Used as the standard method for measuring electrical inductance for much of the 20th century, the Anderson Bridge refined how inductance was understood and taught in electrical engineering worldwide. Built on the principles first explored by Michael Faraday, Joseph Henry, and James Clerk Maxwell, the device became a cornerstone in engineering education and practice.

The IEEE Milestones program recognises significant achievements in technology that have had a lasting impact on humanity. The Anderson Bridge joins this prestigious list, honouring Professor Anderson’s enduring contribution to science and engineering.

Alexander Anderson was appointed Professor of Natural Philosophy in 1885 and subsequently served as President of the University from 1899 to 1934. The laboratory where Anderson carried out his work is located in the main Quadrangle of the University and today is home to the Alexander Anderson Boardroom. 

            Professor Peter McHugh, Interim President of University of Galway, said: “Professor Alexander Anderson’s work has influenced generations of engineers worldwide, and we are proud to see this legacy honoured here on our campus. This recognition by the IEEE is a testament to the lasting contributions of research carried out at our university and reminds us of the how discoveries made here in Galway can shape the world.”

            Kathleen Kramer, 2025 IEEE President and CEO, said: “Participating in IEEE Milestone dedication ceremonies, which recognise outstanding technical developments around the world, have always been joyful to me. Visiting these historically significant locations, where local volunteers have worked with technical experts, historians, and the public to celebrate pioneering achievements and the people behind them, is truly inspiring and a testament to how technological innovation benefits humanity. They are a great way to experience the history of technology alongside the global IEEE community.”

            Professor Gerard Hurley, Emeritus Professor of Electrical Engineering at University of Galway and member of the IEEE, said: “As an undergraduate in electrical engineering in UCC, I became aware of the Anderson Bridge for measuring inductance. I didn’t realise then that its invention was close to home. Incredibly, my whole career in Power Electronics has revolved around transformers and inductors and fate intervened to place me in Galway, home of the invention. Achieving the Milestone crowns a long association with its applications.”

            Professor Johan Enslin, Professor of Electrical Engineering at Clemson University and President of the IEEE Power Electronics Society, said: “Power Electronics engineers understand the term - To Measure is to Know - very well and this IEEE Milestone is an excellent reminder of this principal. The principles of the Anderson Bridge are embedded in our controls and development of power electronic inverters.”

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