Acetylene Explosion
I've been wanting to work with small gas/oxygen explosions using bubbles to see if I can get a good shock wave for some microsecond photographs. I started this evening with propane/oxygen but didn't get a good pop. The "explosive" range for acetylene is wider so I decided to switch after a while.
The pop was much more impressive. I'm just guessing on the proper ratio but got pretty close with a few tries. I'm probably near 50/50 with this video. It is shot at a high frame rate, about 8000fps so the resolution is poor. As I kind of feared my poor glass bubble holder didn't survive too many tries. I'll have to think about a better bubble holder, maybe copper wire.
Update: The idea didn't work. The light from the oxy/acetylene explosion is too bright to be used in combination with my microsecond flash. Maybe I'll try oxy/hydrogen.
Cheers.
Acetylene Explosion
I've been wanting to work with small gas/oxygen explosions using bubbles to see if I can get a good shock wave for some microsecond photographs. I started this evening with propane/oxygen but didn't get a good pop. The "explosive" range for acetylene is wider so I decided to switch after a while.
The pop was much more impressive. I'm just guessing on the proper ratio but got pretty close with a few tries. I'm probably near 50/50 with this video. It is shot at a high frame rate, about 8000fps so the resolution is poor. As I kind of feared my poor glass bubble holder didn't survive too many tries. I'll have to think about a better bubble holder, maybe copper wire.
Update: The idea didn't work. The light from the oxy/acetylene explosion is too bright to be used in combination with my microsecond flash. Maybe I'll try oxy/hydrogen.
Cheers.