Electromagnetic waves, including microwaves and radio waves, can be represented as particles (photons) similar to visible light, as Quantum Electrodynamics applies across the entire electromagnetic spectrum. While photons are quantized energy packets, their energy at lower frequencies is minuscule, making detection challenging without specialized equipment. The wave model is often more practical for understanding radio and microwave signals, as individual photons are difficult to count at these frequencies. The discussion emphasizes the importance of using the appropriate model—particle or wave—based on the context and application. Ultimately, both representations coexist, and understanding their interplay is crucial in physics and engineering.