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.
All passengers must be 21 years old to drink alcohol and 18 to gamble in the casino. All passengers must be 21 years old, or have at least one person in the cabin over age 21. During certain times of the year, like Spring Break, passengers ages 21 to 24 must have one person at least 25 years old in the same cabin.orwegian Cruise Line (www.ncl.com) Passengers ages 18 to 20, with the written consent of their parents or guardian, can purchase beer or wine for themselves only when the ship is sailing in international waters (except in Alaska and Hawaii, where you must be 21 years of age to consume or purchase alcohol or any kind).