Deflagration
A small amount of energetic material in a six inch long line burns quickly. When I filmed this a few years back using a normal video the stuff went all at once like flash powder. From counting frames it's burning at 10 feet/sec.
It still amazes me that the paper underneath is not burned at all.
I had to stop the lens down to keep from saturating the sensor.
ASA 400 1/4000 3000fps 448X352 50mm f/22
Deflagration
A small amount of energetic material in a six inch long line burns quickly. When I filmed this a few years back using a normal video the stuff went all at once like flash powder. From counting frames it's burning at 10 feet/sec.
It still amazes me that the paper underneath is not burned at all.
I had to stop the lens down to keep from saturating the sensor.
ASA 400 1/4000 3000fps 448X352 50mm f/22