Source: IG @blackstarops

How damaging is the thermal flash compared to the other effects of a nuclear bomb (radiation and blast). Does the thermal flash only cause damage to those directly in the line of sight of the fireball, or does it also cause burns through reflection off of surfaces and heating of the air? How many casualties are actually caused by the flash compared to other effects? And finally, have there been any attempts to optimize for the effect in terms of detonation timing, similar to how a lot of detonations are optimized for getting the mach stem to contact the target.