Dilation is used in eye exams so that the eye doctor can view the patient's eye better. After a while it will slowly reduce in size and return back to normal.
A microscope dilates a specific specimen four times larger. A microscope, a projector, a model boat, or a model of a city. All of these use dilation..
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And your question is which one is it? Well it's all of the above.
[tex]\color{red}{\tt{Hope \ It \ Helps}} [/tex]
