273 articles from THURSDAY 26.3.2020

Quantum effect triggers unusual material expansion

You know how you leave space in a water bottle before you pop it in the freezer—to accommodate the fact that water expands as it freezes? Most metal parts in airplanes face the more common opposite problem. At high altitudes (low temperatures) they shrink. To keep such shrinkage from causing major disasters, engineers make airplanes out of composites or alloys, mixing materials that have...

Empty shelves not an indicator of a broken supply chain

For the millions of Americans concerned about shortages of vital supplies like toilet paper, food basics and other items vital to getting us through an unprecedented global health crisis, there is some encouraging news, according to researchers at Northern Arizona University.