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 legal age to gamble in Ontario is 18. You can buy lottery tickets and play bingo. You can not gamble in Ontario where alcohol is served until 19, as in casinos, as the drinking age in Ontario is 19. In Quebec you can gamble and drink at age 18, so casinos are an available at 18.In some provinces such as Ontario, 18 is the legal age to vote but 19 to buy alcohol.ou can not gamble in Ontario where alcohol is served until 19, as in casinos, as the drinking age in Ontario is 19. In Quebec you can gamble and drink at age 18, so casinos are an available at 18. In some provinces such as Ontario, 18 is the legal age to vote but 19 to buy alcohol.