Foundations of Physics: Physical World and Measurement

To master physics, you must first speak its quantitative language and understand how we observe the universe. This text-based course introduces you to the core principles of physical quantities, system of units, and the rigorous mathematical tools used to measure the physical world. You will gain a clear, structured understanding of the fundamental concepts that underpin all advanced scientific study. What you'll learn: Understand the nature of physical laws and the fundamental forces governing the physical world; Master the International System of Units (SI) and convert between different systems of measurement; Apply dimensional analysis to verify physical equations and derive relationships between quantities; Analyze experimental errors, understanding the difference between precision and accuracy; Calculate significant figures and propagate uncertainties through mathematical calculations; Practice solving foundational physics problems through clear, step-by-step written examples. The course begins with an introduction to basic scientific terminology and the philosophy of measurement, before guiding you through practical exercises in dimensional analysis and error estimation. This course is designed specifically for beginners, high school students preparing for exams, and self-directed learners with no prior physics background. Start your journey into the laws of nature today.