in ww2 when America dropped the atomic bombs on Japan, there are images after of shadows of people being left on the street. What is the science behind that?

Question

in ww2 when America dropped the atomic bombs on Japan, there are images after of shadows of people being left on the street. What is the science behind that?

In: 1289

Answer 1

The first wave of energy that reaches somewhere after a large explosion is the light. Just like for example the sun it heats up everything in its path. But unlike the sun the light from a nuclear explosion is powerful enough to scorch concrete and set fire to paint. But just like the light from the sun it does not go through flesh and will cast shadows. What you are seeing is the unburned walls in the shadow of people.