(轉貼)澳洲新恐龍化石 比迅猛龍還兇

the result of X-ray-heated air (the fireball) sending a shock/pressure wave in all directions, initially at a velocity greater than the speed of sound,[44] analogous to thunder generated by lightning. Knowledge about urban blast destruction is based largely on studies of Little Boy at Hiroshima. Nagasaki buildings suffered similar damage at similar distances, but the Nagasaki bomb detonated 3.2 kilometres (2.0 mi) from the city center over hilly terrain that was partially bare of buildings