A top Australian Technology: WiFi

In the 1990s, there were no smart phones or other wireless devices. You had to connect your computer to actual wires. 

Many companies around the world had invented wireless technology, but the stumbling black was reverberation.

Reverberation is an echo that distorts the signal caused by radio waves bouncing around.

Australia's CSIRO invented and patented wireless LAN (WLAN) technology that allows wireless phones and computer devices.

The Fast Fourier Transform (FFT) chip developed by Australian radio-astronomer John O'Sullivan and his colleagues at CSIRO was one centimetre square, with 95,000 transistors.

However, CSIRO did not invent core elements of its wireless technology. They developed a solution to the "multipath problem" of interference to radio waves indoors. 

As Isaac Newton wrote in a letter to Robert Hooke in 1675, “If I have seen further [than others] it is by standing on the shoulders of Giants”.

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