“The Hiroshima bomb (thirteen KT) started fires two miles from ground zero. Therefore, a twenty MT (fifteen hundred times larger) would start fires three thousand miles away.” Statement made by a lecturer at a public educational meeting.
NUCLEAR WAR FACT: The danger radius increases by a factor of two as the weapon yield or mega tonnage increases by a factor of ten.
Some of the laws of physics do not progress on a linear scale. Although a twenty-MT weapon is fifteen hundred times larger than a thirteen-KT weapon, the danger radius increases by a factor of two as the weapon yield or mega tonnage increases by a factor of ten. A twenty-MT weapon has a danger radius of approximately eight times that of a twenty-KT weapon. A twenty-MT weapon may start fires twenty-two miles from ground zero under optimum conditions such as the land being flat, the atmosphere being clear, no clouds, no rain, and no snow. Fires may be ignited up to the 2-psi range.19