James Gregory

James Gregory was a 17th-century Scottish mathematician and astronomer who made significant contributions to optics, especially in understanding how lenses bend light. He is best known for his work on the design of telescopes, particularly the Gregorian telescope, which uses a concave mirror and two lenses to improve image quality. His research laid the groundwork for later advancements in optical instruments. Gregory's studies on the behavior of light helped establish foundational principles in geometrical optics, influencing both scientific thought and practical applications in astronomy and vision technologies.