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Brownian motion

Science

Active and passive in-cell movements distinguished for the first time

If you looked inside any cell in your body right now, you'd notice that the individual structures and components within it are constantly moving around. While some of that twitching and jostling is passive, other movement is more deliberate, with the cell actively exerting energy to move components. A new data analysis technique is improving our ability to distinguish between those two types of movement, and the results could significantly improve our understanding of cell biology.Read More

Science

Molecular assembler finally created

Ribosomes are the main engines of creation of the proteins on which the body depends. Now, an artificial analog of the biological ribosome has been designed and synthesized by Professor David Leigh FRS and his team in the School of Chemistry at the University of Manchester.Read More

Science

Einstein's prediction finally witnessed one century later

Einstein said it couldn't be done. But more than one hundred years later physicists at the University of Texas at Austin have finally found a way to witness “Brownian motion”; the instantaneous velocity of tiny particles as they vibrate. The “equipartition theorem” states that a particle's kinetic energy, that due to motion, is determined only by its temperature and not its size or mass, and in 1907 Einstein proposed a test to observe the velocity of Brownian motion but gave up, saying the experiment would never be possible – not so.Read More

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