Given the task definition and input, reply with output. In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: What do you call the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains? Answer: atomic emission spectrum
Atomic emission spectrum do you call the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains.