[ad_1] Magic squares have been in the imagination of humanity for a long time. The oldest known magic square comes from China and is over 2000 years old. One of the most famous magic squares is found in the copper engraving by Albrecht Dürer Melencolia I. Another is found on …
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[ad_1] IMAGE: The evolution of infection in people as a function of the asymmetry in population distribution shows that when the boundary from high-density to low-density areas is closed, the total spread of the disease … More Credit: Image courtesy of Massimiliano Zanin WASHINGTON, November 17, 2020 – Pandemics are …
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[ad_1] Many types of motile cells, such as bacteria in our guts and sperms in the female reproductive tract, need to push themselves through tight spaces filled with viscous fluid. In recent years, the movement of these “micro swimmers” has been mimicked in the design of micro- and nanoscale self-propelled …
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