Achim Leistner at the Australian Centre for Precision Optics, holding a 1 kg, single-crystal silicon sphere for the Avogadro project.
|Known for||Avogadro project|
Achim Leistner is an Australian optician of German origin. During his retirement, he was asked to join the Avogadro project to craft a silicon sphere with high smoothness, as automated machining does not match his precision.
In addition to precision instruments, Leistner uses his hands to feel for irregularities in the roundness of the sphere. The research team has called his extraordinary sense of touch "atomic feeling".
Leistner holds certificates in precision optics, geometrical optics, optical design drawing, and mathematics from Optic Carl Zeiss Jena Technical College. He has served as a member of the Australian Optical Society and on international conference working committees for SPIE and the Optical Society of America.
- Keats, Jonathon (27 September 2011). "The Search for a More Perfect Kilogram". Wired. Retrieved 16 June 2015.
- Powell, Devin (1 July 2008). "Roundest Objects in the World Created". New Scientist. Retrieved 16 June 2015.
- Episode 2: Mass and Moles. Precision: The Measure of All Things. BBC Four. 4 July 2014. 48.4 minutes in.