Intellectually speaking, A strip of magnesium acting as a fuse would work, but require lighting before the trip. In practice, though, someone could get hurt, so only do this for science.
A cigarette is the classic slow-acting fuse that will give you 3-5 minutes. In college, we would hook them up to firecrackers, and then go hang out near the RA, so when it went off, we had a fool-proof alibi. The bang would destroy all evidence of the cigarette fuse.
We once set 3 at once and then were hanging in plain sight near the RA when the first one went off. We all ran to that one, and then we heard another one go off down another hall, etc. We were standing next to the RA when all of them went off. The PERFECT crime.
Intellectually speaking, A strip of magnesium acting as a fuse would work, but require lighting before the trip. In practice, though, someone could get hurt, so only do this for science.
A cigarette is the classic slow-acting fuse that will give you 3-5 minutes. In college, we would hook them up to firecrackers, and then go hang out near the RA, so when it went off, we had a fool-proof alibi. The bang would destroy all evidence of the cigarette fuse.
We once set 3 at once and then were hanging in plain sight near the RA when the first one went off. We all ran to that one, and then we heard another one go off down another hall, etc. We were standing next to the RA when all of them went off. The PERFECT crime.
Can’t get away with it today, too many cameras.
In school, we used a magnesium fuse in a puddle of glycerin.