The explosion of gunpowder is a form of what chemists refer to as a redox (reduction/oxidation) reaction.
Some people have suggested that Shakespeare's Macbeth was connected with the Gunpowder Plot. It was certainly written at about that time and contains a reference to the "Great Equivocator," Henry Garnet.
The term 'black powder' can refer to a number of different things. It is mostly used to describe gunpowder, which is used in weapons, explosives and the like.
Some scholars have tried to link the play Macbeth to the Gunpowder Plot. There is not much connection although the Porter's reference to an "equivocator" is almost certainly a reference to Henry Garnet, a Jesuit priest known as "The Great Equivocator".
In plays, like Broadway plays, there are scenes and acts. Scene 2 would refer to the second scene of the play act 1 would refer to act 1 of scene 2 in that play.
By his Roman name Vulcan. "as foul as Vulcan's stithy . . ."
Gunpowder came to Europe in the late 13th century. The first guns appeared along side. To clarify your question, 'gun' can refer to either artillery/cannons or small arms. The first small arms (i.e. hand cannon) appeared in the 14th Century.
The term trickster may refer to someone who plays pranks or otherwise disobeys normal rules and conventional behavior. Trickster could also refer to someone who is bad or no good.
Some people have tried to link the play Macbeth to the Gunpowder Plot. It is true that the reference to an "equivocator" in the Porter's speech is almost certainly a reference to Henry Garnet, a Jesuit priest who was executed as part of the Gunpowder Plot, and who wrote a famous treatise on "equivocation", saying that it was ok to say something which was literally true but implied something false. This would have been a hot topical item at the time the play was written, after 1605.
Horse Isle quest answer: Macbeth
Macbeth is the play that actors are superstitious about.
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