The name John in its Greek form á¼°ÏÎ¬Î½Î½Î·Ï (IÅannÄs) features prominently in the New Testament, being borne by John the Baptist, John the Apostle, and several others; the Gospel of John, three epistles, and Revelation are each attributed to a John . As a result, the name became immensely popular in Christian societies.n Welsh, the name John is rendered as Ieuan (pronounced as Yay-an or Yey-an), and as Ifan (pronounced IV-an), Ianto (pronounced as Yan-to) or Ioan (pronounced as Yo-an) or Sion (siÃ´n pronounced As-sh). On ifan eventually became rendered Into english As. evan
This is ironic, because the spot-type disc brake is an American invention. In 1898, Elmer Ambrose Sperry of Cleveland designed an electric car having front-wheel disc brakes. He made a large disc integral with the hub on each wheel.
The brakes in your car are a good example of a basic piston-driven hydraulic system. When you depress the brake pedal in your car, it is pushing on the piston in the brake's master cylinder. Four slave pistons, one at each wheel, actuate to press the brake pads against the brake rotor to stop the car.