But what's an atom made of? What is matter, really? Matter is defined as that which 1) has mass and 2) has volume or takes up space. Mass is an intrinsic property whose base SI unit is the ...

Solvej Balle’s “On the Calculation of Volume” rethinks the familiar story of the endlessly repeating day. By Hilary Leichter Hilary Leichter is the author of the novels “Temporary” and ...