Arquebus, or Harquebus, an early firearm. Several types of firearms were known by the name arquebus during the 16th and 17th centuries. All were fired from the shoulder or chest. The firing mechanism was originally a matchlock, a device that held a piece of burning wick and touched it to the powder in the gun when a trigger was pulled. Later, other firing arrangements were used.
In what may prove to be the first nuclear explosion since 1998, North Korea claims it has conducted an underground test of a nuclear weapon.
Do you feel your job is unfulfilling? Maybe you should consider becoming a nuclear detective. These modern Sherlocks might just stop nuclear war from happening.