Hitting droplets of nitroglycerin with a hammer in slow motion

In the interests of science, the presenter from the BBC's "How We Shook the World" hits a droplet of nitro with a hammer, over and over again, in slow motion. I am enscienced!

Nitroglycerine Detonation Filmed in Slo-Mo - Explosions: How We Shook the World, Preview - BBC Four (Thanks, Freeal, via Submitterator)