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 gambling age is 18 in CA, but many of the casinos are 21 & up because they serve alcohol. One must be 18 years of age to gamble in California, unless alcohol is served at the establishment, then you must be 21. ChaCha! Gambling is limited to those who are at least 21 years of age in California. ChaCha on! You must be 18 years or older to be able to claim any winnings won in the State of California. A person must be at least 18 years of age to gamble in California. Thanks for using ChaCha! Gambling is limited to those who are at least 21 years of age in California.