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December 17, 2020 11:07 IST
In 1992, Carl Woese won the Dutch Royal Academy of Science’s Leeuwenhoek Medal, the highest honour in microbiology
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Carl R. Woese | File. The portrait was taken by Don Hamerman. The photo was taken in 2004 at the University of Illinois.
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In 1992, Carl Woese won the Dutch Royal Academy of Science’s Leeuwenhoek Medal, the highest honour in microbiology
Carl Woese (1928 - 2012) was an American microbiologist who discovered the third domain of life, archaea, which are a group of single-cell prokaryotic organisms. Until this discovery, the tree of life included only two domains, namely – eukaryotic (which include animals, plants and fungi) and the prokaryotes (all microscopic organisms).
Hair Styling with Physics
Physics 13, s161
Experiments show that hair-like bundles form different shapes depending on the speed at which they are dried.
J. Ha and Y. S. Kim/University of Illinois at Urbana–Champaign.
J. Ha and Y. S. Kim/University of Illinois at Urbana–Champaign.
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Sameh Tawfick and his teammates came across a strange occurrence a few years ago while studying how carbon nanotubes self-assemble in liquid: the tubes formed different structures depending on how fast they dried. Curious to know the reason for this drying dependence, the team based at the University of Illinois at Urbana–Champaign began a series of experiments on micrometer-thick carbon fibers, or “hairs.” In their latest study, they monitor how the speed at which liquid drains from a bundle of hairs determines the bundle’s shape when dry [1]. Untangling the role that hydrodynamics plays in fiber morphology could allow the design of smart fibers that can be controlled with wetting.