Electromagnetism and Electronics: Signals in Technology

Khan Academy is a free online educational platform that offers a wide range of resources, including videos, exercises, and instructional materials across various subjects. This specific page focuses on electromagnetism, particularly how radios and cellphones catch signals from the air, and the electronic components involved. Key features include interactive learning modules, self-paced study options, and a comprehensive approach to complex scientific concepts, making it suitable for learners of all ages, especially those interested in physics and technology.