These were the âBlue Bladeâ type that had a blue oxide finish, and that finish, in contact with an ordinary pencil âleadâ, made a point-contact rectifier. This served the purpose of the âcrystalâ and âcats whiskerâ of early crystal radios; it permitted current coming in from the antenna to flow in only one direction.
Age restrictions: To participate in the state lottery or horse track betting you must be 18 years old. To gamble in a casino or on a video poker machine, you must be 21. Casinos and Racetracks: Riverboat casinos are legal in Louisiana.
Minimum Gambling Ages. Each state or province determines its own minimum age for gambling. Some have 2 minimum ages (18 in some casinos, 21 in others). This is typical in states with alcohol-licensed casinos. If alcohol is served on the casino floor, the minimum age is 21. If not, the minimum age is 18. In the list below, we left a blank where we have not determined the minimum age.