Julius Robert von Mayer

Julius Robert von Mayer was a 19th-century German physicist who made important contributions to understanding energy and conservation. In 1842, he discovered that energy cannot be created or destroyed, only transformed, which laid the groundwork for the First Law of Thermodynamics. His work showed that the energy in a system remains constant, fundamental to physics and engineering today. Mayer’s insights helped shape how scientists understand heat, work, and energy transfer, influencing numerous scientific advancements and technological developments.