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.
Age Policies of the Major Lines. Carnival (www.carnival.com). All passengers must be 21 years old to drink alcohol no matter where the ship is sailing. You must be 18 to gamble in the casino; if you're under age 21, there must be at least one person in the cabin over 25.Celebrity Cruises (www.celebritycruises.com).ge Policies of the Major Lines. Carnival (www.carnival.com). All passengers must be 21 years old to drink alcohol no matter where the ship is sailing. You must be 18 to gamble in the casino; if you're under age 21, there must be at least one person in the cabin over 25.