Nikola Tesla worked on telecommunication technology.
Nikola Tesla . Tesla tried to put these ideas to practical use in his unfinished Wardenclyffe Tower project , an intercontinental wireless communication and power transmitter , but ran out of funding before he could complete it . Wireless . It encompasses various types of fixed , mobile , and portable applications , including two-way radios , cellular telephones , personal digital assistants ( PDAs ) , and wireless networking . The term is commonly used in the telecommunications industry to refer to telecommunications systems ( e.g. radio transmitters and receivers , remote controls , etc. ) which use some form of energy ( e.g. radio waves , acoustic energy , ) to transfer information without the use of wires .