Abohm May 2026

The Ghost in the Circuit: A Look at the Abohm If you’ve spent any time looking at electrical units, you’re probably familiar with the , the standard unit of electrical resistance. But hidden in the attic of scientific history is its tiny, nearly forgotten ancestor: the abohm .

The term "abohm" was introduced around by Arthur Edwin Kennelly. The "ab-" prefix stands for absolute , a nod to the "absolute electromagnetic system" used at the time. The Ghost in the Circuit: A Look at

Back then, scientists were trying to create a coherent system of measurements based on basic physical properties like mass, length, and time. While the abohm was mathematically "pure" within that system, it was far too small for practical use in everyday engineering. This led to the adoption of the as a more practical unit for real-world applications. Is It Still Used? In short: not really . The "ab-" prefix stands for absolute , a