Karl Norris: A Pioneer in Optical Measurements and Near-Infrared Spectroscopy, Part I

The first installment of a two-part "Icons of Spectroscopy" series, introduces the life and early scientific contributions of Karl H. Norris, the founding father of near-infrared (NIR) spectroscopy. With a career that began in the mid-20th century and extended over six decades, Norris’ work at the U.S. Department of Agriculture helped shift NIR from a scientific curiosity to a core analytical technique used globally. Part I focuses on his early development of optical methods, the principles behind NIR analysis, and how his foundational work sparked a revolution in the way agricultural and food products are measured and evaluated. Norris’ innovations not only transformed the USDA’s analytical capabilities but laid the groundwork for a technology that would become indispensable across multiple industries.