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.
Article I, Section 2 of the U.S. Constitution prescribes three qualifications for representatives. Like senators, there is an age qualification, but it is lower -- you need to be at least 25 to be a representative. The citizenship qualifications are also slightly less stringent -- you only need to be a citizen for seven years.