Frames sequence extracted from the recently declassified video of the "Tesla" nuclear test, part of operation Teapot (Nevada, 1955). The weapon was placed on top of a 308ft tall tower (visible in the top-left frame). The high-speed camera was recording about 2,400 frames per second.  The 'spikes' visible on the lower part of the expanding fireball are due to mooring cables being vaporized by the radiative precursor (rope trick effect), debris of the weapon's casing are visible in frames 16 and 28. We estimated the approximate position of the blast wave from the radius of the fireball at different times (overlaid dashed circles). Watch the original video here. Credits: LLNL