How physics got its right hand: The origins of chiral conventions in electromagnetism

TL;DR

This paper explores the historical development of chiral conventions in electromagnetism, focusing on how standards like right-handed coordinates and positive rotation directions became universally adopted, influencing physics education and communication.

Contribution

It provides a detailed historical analysis of the origins of chiral conventions in electromagnetism and highlights their impact on scientific practice and pedagogy.

Findings

Historical roots of right-handed conventions traced to 19th century developments.

Influence of key figures like Newton and Maxwell on standardization.

Implications for physics teaching and communication emphasized.

Abstract

Why do physicists almost universally take the direction of positive rotation to be counterclockwise, and three-dimensional coordinates to be right-handed? This paper traces the historical development of these chiral conventions, with an emphasis on the physical quantity whose direction became the focal point of this discussion in the mid-1800s, the magnetic field. Though these standards are often reduced to mere mathematical, inconsequential choices, an analysis of the impact of Newton, Maxwell, the London Mathematical Society, and others toward the subject can enhance classroom discussion, not only as a contextual sidebar, but also by emphasizing the influence conventions in physics can have on pedagogy, communication, and scientific advancement.