From the motion sensor to the computer chip, in many products of daily life components are used whose functioning is based on smallest structures of the size of thousandths -- or even millionths -- of ...

Assigning dimensions to physical quantities is not just for practicality. Steven T. Bramwell reflects on the deeper physical connotations of it all. This operational conclusion about dimensions may ...

In physics classes it is taught to include units when evaluating formulas with values and to always check that the units work out right in equations. That way we easily detect if we forgot to square a ...