instantaneous detonator

instantaneous detonator

[¦in·stən¦tā·nē·əs ′det·ən‚ād·ər]
(engineering)
A type of detonator that does not have a delay period between the passage of the electric current through the detonator and its explosion.
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1, three charges were placed atop the rock and primed with instantaneous detonators.

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