PHYS 3118

Foundations of Modern Physics

Sarah Lawrence College · UGRD · Fall 2026

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Our everyday experiences with the world around us give us an intuitive knowledge of some of the principles of physics; however, many areas of contemporary physics study the unseen—literally! This course will guide students through the core principles needed to understand modern physics and to think like a physicist. As we develop our knowledge of physics, we will study puzzles, thought experiments, and toy models of the real world to uncover the nature of our universe. Unlike traditional introductory physics courses, we will start with the modern formulations of classical mechanics, which lay the groundwork for how physical theories, including quantum mechanics, have been developed over approximately the last 100 years. We will also see how forces, such as the electromagnetic force and gravity, can be understood as field theories acting everywhere in space. As we develop our physics toolbox, we will focus on building a deep and intuitive understanding of the material, including the fundamental mathematics needed to study physics. This course will be mathematically rigorous; and while prior exposure to calculus will be helpful, a deep interest in mathematical reasoning will be essential. This seminar will focus on understanding the real-world physics at play. Work in this course will largely consist of problem sets designed to develop thinking and showcase progress over the course of the year. It’s About Time

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Class #sarah_lawrence-PHYS3118Fall 2026UGRD10 credits
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