The atomic bomb is an example of a chain fission.

Combining the two uranium masses suddenly initiates a chain fission reaction and a nuclear explosion.

The shock wave created by the conventional explosion squeezes the plutonium enough to initiate a chain fission reaction.

To do this requires the explosion of conventional chemicals, which slam the fissionable components together hard enough to cause an instantaneous chain fission reaction.

The atomic bomb is an example of a chain fission.

Combining the two uranium masses suddenly initiates a chain fission reaction and a nuclear explosion.

The shock wave created by the conventional explosion squeezes the plutonium enough to initiate a chain fission reaction.

To do this requires the explosion of conventional chemicals, which slam the fissionable components together hard enough to cause an instantaneous chain fission reaction.