The early history of radio is the history of technology that produces radio instruments and uses radio waves. During that time, many people contributed to the theory and inventions in radio. The development of radio began as “wireless telegraphy”. The idea of wireless communication preceded the discovery of radio, with experiments in wireless telegraphy through capacitive induction and transmission over land, water, and even train tracks from the 1830s onwards. James Clerk Maxwell showed theoretically and mathematically in 1864 that electromagnetic waves can propagate in free space. It is likely that the first intentional transmission of a signal using electromagnetic waves was performed in an experiment by David Edward Hughes around 1880, although this was considered induction at the time. In 1888, Heinrich Rudolf Hertz, did an experiment that confirmed Maxwell’s theory of electromagnetism, was able to definitively prove electromagnetic waves transmitted through air