Explosion analysis from images: Trinity and Beirut*

Images of an explosion can be used to study some its physical properties. After reviewing the key aspects method originally developed first nuclear detonation and analyzing Trinity blast data, is applied Beirut August 2020 by using images from videos posted online. The applicability discussed process selection, extraction, analysis data presented. estimate for energy yield found $2.3^{+1.1}_{-1.1}$ TJ or $0.6^{+0.3}_{-0.3}$ kt TNT equivalent. result consistent with others recently appeared in literature different methods. Notice that this article includes content readers may find distressing.