From FM broadcasting to 5G communication, humanity's application of electromagnetic waves is essentially about the precise control of frequency. The frequency of an electromagnetic wave determines its characteristics and uses: low-frequency electromagnetic waves travel long distances but have limited bandwidth, while high-frequency electromagnetic waves have high transmission speeds but are easily blocked by obstacles. This correspondence between frequency and characteristics is the fundamental principle for communication engineers designing various wireless systems. The "Discover Electromagnetic Waves" interactive installation (1400*800*1200mm) transforms this professional concept into a science popularization experience accessible to the public. Visitors can "modulate" electromagnetic waves of different frequencies by operating the left and right handles, much like a sound engineer. The device's sophisticated sensing system monitors the input in real time and presents the difference
