1 Forensic phonetics: the use of phonetics (the science of speech) for forensic (legal) purposes. 2  Speech recognition: the analysis and transcription of recorded speech by a computer system. 3  pronunciation: to learn actual pronunciation of words of various languages.
Mercury vapor is odorless, colorless and very toxic. Even though liquid mercury evaporates slowly, a significant amount of mercury vapor can build up indoors after mercury is spilled, and it can be dangerous to breathe these mercury vapors.
At Ballou High School in Washington, D.C., in 2003, a student took liquid mercury from a science laboratory and sold some to other students. Mercury was found in the classrooms, gymnasium and cafeteria, and the school had to be shut down for 35 days to clean it up.