A charge of compressed wet guncotton may be exploded, even under water, by the detonation of a small primer of the dry and waterproofed material, which in turn can be started by a small fulminate detonator.
The detonation of this particular storyline hit all the right notes in the episodes dealing with it and the ripple effects were felt for months.
These results showed clearly that liquefied acetylene was far too dangerous for general introduction for domestic purposes, since, although the occasions would be rare in which the requisite temperature to bring about detonation would be reached, still, if this point were attained, the results would be of a most disastrous character.
In order for detonation to occur, a sphere of plutonium has to be rapidly compressed by a series of conventional high explosives.
Skimming the head also increases the compression ratio and to avoid detonation with low octane fuel a low compression piston is used.