Hans Christian Ørsted’s groundbreaking research in 1820, revealing the connection between electricity and magnetism, had a profound impact on technology development. His discovery paved the way for the creation of electromagnets, which are integral to numerous applications, including electric motors and generators. These innovations revolutionized industries such as transportation and manufacturing. Ørsted’s work also influenced the advancement of telegraphy, enabling long-distance communication through electromagnetic signals. Moreover, his insights laid the foundation for Michael Faraday’s discoveries in electromagnetic induction, leading to the development of transformers and the generation of electricity in power plants. The principles elucidated by Ørsted are fundamental to modern electronics, shaping the design of electronic components like inductors and transformers. The utilization of electromagnetic sensors and compasses in technology, from navigation systems to smartphone sensors, further underscores Ørsted’s lasting impact on the technological landscape. Overall, Ørsted’s research laid the groundwork for key advancements in electromagnetism, contributing significantly to the trajectory of technology development in the 19th and 20th centuries.