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.
Online Gambling Age For Alaska Residents. When it comes to gambling in Alaska, you will find that there are various gambling age limits in place. First off, you have to be 19 to begin playing bingo. Both online and offline bingo halls require you to be 19 in order to play.