Mood jewelry is made from either a clear capsule filled with thermo chromic liquid crystal, or a thin sheet of liquid crystal paint that is sealed underneath a plastic or glass dome. Mood jewelry change colors by the same principle as a liquid crystal thermometer.
A senatorial candidate must be 30 years old to qualify for election. Candidates for the House of Representatives must be 25 years old to qualify for election. Presidential and vice-presidential candidates must be 35 years old. A senatorial candidate must be 30 years old to qualify for election.
With respect to the states, the minimum age required to serve as a house representative ranges from 18 to 25, with about half the states requiring a minimum age of 21. Only about a third of the states allow 18-year-olds to serve in the state senate, and 20 have set a minimum age of 25. In five states, the minimum age required to serve as a state senator is 30. For governor, most states require a minimum age of 30.