The unit recommended by the World Meteorological Organization is the megajoule per square metre (MJ m2) or joule per square millimetre (J mm2).

He estimated the number of molecules in a cubic millimetre of gas, at room temperature and pressure, from data obtained from the kinetic theory of gases.

On Israel's Independence Day, only a few weeks ago, in the midst of celebrations, members of a terrorist militia in southern Lebanon fired a 107 millimetre mortar shell specifically at civilian targets.