Honestly, I’m watching a war movie and a dude got hit by an IED. It got me thinking though, and I don’t quite get what is the lethal factor in an explosion?
There always seems to be fire in the movies, and it’s clearly a lot of force. But my question is what ACTUALLY happens to (I guess anything) that gets hit by a large bomb/explosion from a play by play/physics situation?
I feel like this is kinda dark, but I just had one of those curious moments and felt like this was the appropriate place to ask
In: Physics
The most lethal part of an explosion is the pressure change. Since the human body is more or less a bag of organs, getting caught in a high pressure area very suddenly tends to squish things, particularly organs that aren’t internally supported well, like the lungs. Depending on the explosive other factors can make a difference, such as shrapnel or heat. [Here](https://m.youtube.com/watch?v=W4DnuQOtA8E) is a video comparing the likelihood of surviving a grenade on land compared to underwater, which might answer things a little better.
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