In Saint Petersburg, Alexander Stepanovich Popov, a notable Russian physicist and electrical engineer, made a significant contribution to the nascent field of radio communication by presenting his invention, the Popov lightning detector, to the Russian Physical and Chemical Society. This groundbreaking device functioned as an early radio receiver capable of detecting lightning strikes, demonstrating the practical applications of electromagnetic waves. Popov’s work was inspired by previous experiments by Heinrich Hertz, who confirmed the existence of electromagnetic waves. With his innovative creation, Popov was able to not only detect but also visualize atmospheric discharges that we now understand as lightning, effectively tapping into the broader potential for wireless communication that would emerge in the following decades.

The Popov lightning detector utilized a coherer—a device making use of metallic filings that could change resistance in response to electromagnetic waves—thus allowing the detection of signals. This presentation marked a pivotal moment in the study of wireless communication, as it illustrated tangible applications stemming from theoretical physics. Popov's pioneering work helped pave the way for the development of radio technology and was foundational for subsequent inventions by other inventors such as Guglielmo Marconi, who famously took these advancements and commercialized radio communication.

Following this demonstration, Popov continued to refine his designs and contribute to the development of radio technology. His efforts would eventually lead to the radio transmitters and receivers that became central to modern communication, radio broadcasts, and navigation systems. The impact of Popov’s work has been celebrated in various regions, particularly in the former Soviet Union, where his contributions to radio technology are recognized annually on Radio Day.