It was especially cool for the fingerprint technician that noticed that the smoke also makes latent fingerprints on paper visible. That guy made a lot of money on something we all just found interesting and cool. I'm sorry to say that I was a crime scene technician by trade when I first experienced it with the old Satellite City Hot Stuff CA 30+ years ago. Unfortunately, I didn't have any documents around that would have shown me the potential. Oh well.....
BTW, the newer CA's don't smoke nearly as much as the old Satellite City stuff did.
Verne
ORIGINAL: mklein25
Verne - from what I remember, the drop of CA makes the baking soda smoke, and that's kinda cool:-)