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.
The minimum gambling age is 21 at most casinos (at some itâs 18) and 18 for bingo or pari-mutuel betting. Look in the âSpecial Featuresâ listing for each casino to see which allow gambling at 18 years of age. Although most of the casinos have toll-free numbers be aware that some of these numbers will only work for calls made within Washington.