The surprising stories behind four helpful household inventions to improve home life: Gilbert Toyne created an Aussie backyard icon - the rotary clothes hoist - only to have it made famous by someone else. Myra Taylor improved women's lives with her boneless corset leaving a legacy of freedom we still enjoy today. Mervyn Richardson forever changed the suburban landscape with his Victa lawnmower, while Dr Steve Cummings and Bruce Thompson achieved huge water savings around the world with the dual-flush toilet.

Australian inventors have boldly re-imagined communication across the spectrum of technologies: Graeme Clark's extraordinary bionic ear delivered deaf patients the sound of speech; John O'Sullivan and his CSIRO team created the world's first high-speed wi-fi that dramatically changed the communication landscape worldwide; Henry Sutton's visionary Telephane was designed in Ballarat decades before the television; and post-master James Raymond established the world's first pre-paid postage system in Sydney in 1838 with his delightfully simple pre-paid envelope.

The fires of war become the forges of Australian invention. William Scurry invented a decoy drip rifle to help Anzacs safely evacuate from Gallipoli. Alexander Worsfold built his all-terrain transporter to hurry injured soldiers to field hospitals on the Western Front. Adelaide-born Howard Florey and his team developed the wonder drug penicillin that was first deployed amongst infected allied soldiers during World War II. And from Wollongong, Evelyn Owen's submachine gun out-performed its competitors and become known as 'the diggers' darling'.

The push for smarter farming is at the core of Australia's tough agricultural history. Richard and Clarence Smith quarrelled over who was the true inventor, but their stump-jump plough improved the economic prospects of farmers working difficult terrain. Frederic Wolseley's mechanical shears eventually won over the shearers and transformed the wool industry. Lew Bandt designed the ute for farmers needing a comfortable working vehicle, and Benjamin Dunkerley invented a fur-cutting machine that led to the iconic Akubra.

Four great medicos and mavericks risked their careers testing these ground-breaking medical inventions. Psychiatrist Dr Joh Cade discovered the psychological effects of Lithium on his bipolar patients after first testing its toxicity on himself. Dr Mark Lidwill worked in secrecy on the world's first pacemaker following his experiments on the hearts of recently deceased patients. Professor Fiona Wood developed a process to help severe burns victims recover quickly with spray-on skin, and the Ansells helped fight infection with their disposable medical gloves.

The Inventors who got us airborne typify tenacity and perseverance. Lawrence Hargrave, who was ridiculed for his box kites, laid the foundation for all modern aviation. David Warren's black box helped make flying the safest form of transport, but he faced staunch resistance getting it off the ground. Jack Grant persisted for 10 years to get his lifesaving slide-raft into planes. While it took 60,000 years for the inventors of the returnable boomerang to receive recognition for their aeronautical achievements.

Four Australian inventions that transformed how we see the world around us, and what we know about it. William and Lawrence Bragg invented X-ray crystallography to reveal the atomic structure of crystals. Milutin Stoilovic and colleagues at the Australian National University worked with Federal Police to create a forensic lamp, the Polilight, which could detect latent finger prints. Charles Tait created the world's first feature film with the help of his family, and William Beech invented the periscope rifle in the trenches of Gallipoli.