Examples of precipitation are: 1  As a weather condition: Water (Hail, Rain, Sleet, Snow) falling from the sky. 2  As a chemical reaction: The formation of an insoluble material when two mixtures containing soluble chemicals are mixed (eg: AgNO3 (aq) + KCl (aq) â AgCl (s) + KNO3 (aq)). precipitation solution is just like asking what is a precipitate; it is an insoluble solid compound that forms out of the water solution in an aqueous solution.
The medical term for dilated pupils is mydriasis. Medications or other drugs can also cause the pupil to dilate, either intentionally or as a side effect. For example, eye care professionals often use eye drops that dilate the pupils in order to examine structures at the back of eye, such as the retina. Other medications and illicit drugs that can dilate the pupils include cough and cold medications, decongestants, cocaine, and marijuana.
The duration of pupil dilation depends on the type and concentration of the drug used. Generally, dilation lasts three to six hours. Sometimes, the dilation can extend up to 24 hours if a more concentrated drug is used. Atropine is a common eye drop used to dilate pupils during eye examination. Eye color can also determine the duration of pupil dilation.