8:00pm – Thursday, September 22 on ABC1
Thursday,22 September 2011 Imagine the industrial revolution in reverse, where it’s as cheap to create single items as it is to mass produce them. 3D printers have shrunk in size and cost over the past decade, enabling small design teams to sidestep the mass manufacturing process to make unique creations. Jonica Newby travels to the U.K. to sample a flashy commercial 3D printer and the ultimate DIY workshop. Whether top of the range or in the backyard shed, 3D printers may have as profound an impact on the commercial world as the factory conveyor belt.
Wind and Waves A new study of satellite data covering a twenty-year period – the most comprehensive research of its kind ever undertaken – suggests that wind speeds have increased by 10% and wave heights have grown by nearly 7%, in extreme weather conditions. The research could inform the design of coastal buildings, structures and shipping.
But as Tanya Ha reports, this could also adversely affect the cycle of heat exchange between the sea and the atmosphere.
Gravity Derek Muller takes to the streets with a medicine ball and a basketball and poses the question: when dropped from the same height, which one will hit the ground first? You may know the correct answer, but can you explain why? This bouncy segment has Derek playfully intriguing his hapless subjects before delivering the goods and putting them out of their bemused puzzlement.
Recovered Memories Unfortunately, our memory is not like a video recorder and limited understanding of exactly how memory works has given rise to disagreements. None of these disagreements has been more vigorous than the battle over recovered memories. Buried memories of traumatic events can be recovered – but how reliable are they.
Are traumatic memories repressed through a process of dissociation? Or, do we simply forget? Jonica Newby explores the latest in thinking on recovered memories.
Penguin Wave Being the only vertebrate to breed during the harsh Antarctic winter, Emperor penguins have found a clever way to survive – by huddling. But, just as important as the huddle, is the wave – the cooperative, coordinated pattern of movements that keeps every penguin on its happy little feet and safe from the cold.