The valve is a simple variable-geometry device that controls the opening and closing of the specified flow window or valve curtain area as determined by the camshaft and rocker ratio. The valve curtain area is defined as the flow window created by the open valve at maximum valve lift.
CALIFORNIA LEGENDS The California Gold Rush In the cold morning hours of January 24, 1848, James Marshall, a construction foreman at Sutter s Mill, was inspecting the water flow through the mill s tail race.
The first to hear confirmed information of the gold rush were the people in Oregon, the Sandwich Islands (Hawaii), and Latin America, and they were the first to start flocking to the state in late 1848. All in all, the news of gold brought some 300,000 people to California from the rest of the United States and abroad.