She pulled a small detonator out of her pocket and held down two buttons.

He leaned over a small detonator while the men cleared the intersection of pedestrians.

Using a robotic arm, it places a small detonator on top of them before setting off the device remotely.

In the five seconds of silence that followed, Dunne grabbed the firebomb -a petrol can with a small detonator -and readied it.

"A human being," I continued, "sometimes illustrates this principle figuratively- Imeanthe violent explosion of a large cartridge by means of a small detonator.