The Dramatic Irony in Shakespeare’s Hamlet Irony is, in general, one of the most significant dramatic devices that is frequently used in dramatic works to achieve the dramatic effect. Generally, irony is created when the audience are familiar with more information about a certain situation than one or more than one character within the dramatic work. In Act I, scene ii, Hamlet is in Claudius's court mooning over the death of his father; however, from scene i the audience knows that the ghost of Hamlet's father has been seen on the castle ramparts. Therefore, much of Hamlet's idealizing and grieving is misplaced; the situation is more dynamic than he thinks it is. The dramatic irony is that Hamlet's feelings would be intensified--and he already thinks that they are intense--is more appropriate than he at that point knows. Later on, when he says: "O my prophetic soul," he does know. By act II, the audience knows that Claudius killed Hamlet, Sr. The ghost has told him so, sending Hamlet into a frenzy. However, Claudius and the others, apart from Horatio, a special case, do not. Therefore, when Hamlet puts his antic disposition on and Polonius, Claudius, Opehlia, et. al. believe that he is mad; their misunderstanding is an instance of dramatic irony: the audience knows he is not mad in the way they believe him to be. However, there's an additional edge of dramatic irony here because in one sense Hamlet is mad, even as he thinks he is merely pretending to be so. In other words he believes he is pretending to be that which he is not, but in fact he is pretending to be that which he is. Later on, he tells the traveling player that people don't leap and cavort about, yet so he has done at the end of Act I--and--depending on how the actor playing the part comports himself--at the end of Act II as well. In ActI Sc.5, the Ghost reveals to Hamlet that he was poisoned to death by Claudius who spread the rumour that he died of snake bite which is believed to be true by everyone in Denmark. Dramatic irony results because only Hamlet and the readers know the truth that Claudius murdered Hamlet's father. After this revelation, the audience sympathize with Hamlet and begin to hate Claudius. At the end of ActI Sc.5, Hamlet makes his two friends Horatio and Marcellus to swear that they must not reveal what they have just seen and heard. Also the audience sympathize with Hamlet who has decided to "put an antic disposition on" (to pretend madness) to deceive the others and not reveal his true feelings and his future plan of action in revenging his father's death. Dramatic irony results because only the readers and his friends Marcellus and Horatio know that he is only pretending to be mad. In Act II Sc.1 Ophelia reports to her father Polonius the strange behaviour of Hamlet. Polonius immediately concludes that Hamlet is 'madly in love' with Ophelia: "This is the very ecstasy of love" and that he has gone mad because she has obeyed his instruction in spurning Hamlet's love: "That hath made him mad." Only the readers know that Hamlet is only pretending to be mad.