Wi-Fi
An Australian engineering team led by radio astronomer John O'Sullivan invented the core technology, with radio networking standardization by Dutch engineer Vic Hayes setting the shape.
During the late 1980s and early 1990s at the Commonwealth Scientific and Industrial Research Organisation in Sydney, Australia, O'Sullivan and his colleagues sought a reliable method to transmit data wirelessly indoors. Confined architectural spaces presented severe multipath interference, where radio signals ricocheted off interior walls and scrambled incoming transmissions. Drawing on mathematical algorithms originally developed in 1977 to clean up distorted radio waves from exploding mini black holes, the team applied fast Fourier transform techniques to divide high-speed data across multiple carrier frequencies.
The CSIRO team, which included Terence Percival, Graham Daniels, Diethelm Ostry, and John Deane alongside O'Sullivan, filed their landmark wireless local area network patent in 1993, granted as US Patent 5,487,069. Meanwhile, in the Netherlands, NCR Corporation engineers led by Vic Hayes and Bruce Tuch were developing commercial WaveLAN hardware and petitioning the Institute of Electrical and Electronics Engineers to standardize local radio networking. The IEEE 802.11 standards working group, chaired by Hayes from 1990 to 2000, released the initial baseline protocol in 1997.
Consumer adoption surged in 1999 when Apple integrated the technology into the iBook as AirPort, licensing hardware derived from the Dutch team's work. That same year, major networking hardware manufacturers formed the Wireless Ethernet Compatibility Alliance to ensure device interoperability across different brands. The consortium hired branding consultancy Interbrand to create a consumer-friendly trademark, resulting in the official moniker Wi-Fi.
Radio astronomy signal processing designed to detect cosmic remnants provided the mathematical breakthrough required to send wireless data across a room.