A poem qualifies as blank verse when it is written in unrhymed iambic pentameter. For example, Shakespeare often writes in blank verse, as in this example from Hamlet:
To sleep: perchance to dream: ay, there's the rub;
For in that sleep of death what dreams may come
An iamb is a metrical unit comprising a pair of syllables and made up of an unstressed syllable followed by a stressed syllable. "To sleep," is, therefore, one iamb, and "perchance " is another. When a poem is written in iambic pentameter, there are five iambs to a line, which means also that the final syllable is always emphasized. When a line concludes with a rhyming syllable, it produces what is known as a rising meter, as opposed to a falling meter, which is when the final...
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