There are many uses of strontium that nobody would think of. Strontium is used in the fire that is in flares; the kind of flares police men use to tell people to watch out. It is also used for fireworks. Some types of strontium are used to make the glass on a color television tube. It is sometimes used in optical materials such as glasses or telescopes. If a doctor puts a little bit of strontium in a person's body, it is taken up by the bone tissue. Then the doctor uses radiation detectors to locate the radioactive strontium to assess the patents abnormalities.