Magnetic Liquids
Originally published in 1987
Body
Ferrofluidics Corporation's recent innovation is a spindle for rotating computer discs that supports the disc's rotating shaft on a film of magnetic fluid instead of conventional ball bearings. According to its developers, the spindle offers greatly increased rotational stability, meaning substantially reduced vibration and mechanical noise, and non-repeatable runout. This allows disc drives to store two to 10 times more information.
Full article: http://hdl.handle.net/hdl:2060/20020087776
Abstract
Ferrofluidics Corporation's recent innovation is a spindle for rotating computer discs that supports the disc's rotating shaft on a film of magnetic fluid instead of conventional ball bearings. According to its developers, the spindle offers greatly increased rotational stability, meaning substantially reduced vibration and mechanical noise, and non-repeatable runout. This allows disc drives to store two to 10 times more information.