Which type of explosive is typically used in safety fuses?

The correct answer is low explosives because safety fuses are designed to be a reliable means of initiating a controlled slow-burning output. Low explosives burn at a relatively slow rate compared to high explosives, which react very quickly and can produce a shockwave. The burning rate of low explosives allows for a delay in detonation, making them useful for applications where timing is crucial, such as in blasting operations or pyrotechnics.

Safety fuses utilize the characteristics of low explosives to ensure that the ignition is safe and controlled. This ability to provide a steady, predictable burn makes them suitable for applications that require sequential explosions or timed detonations, minimizing the risks associated with sudden or uncontrolled explosions. Blasting agents and primary explosives would not serve this function effectively due to their reactive properties and intended uses, while high explosives are associated with instant detonation rather than a controlled burn.