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 California Gold Rush took place between 1848 and 1855. During this time gold was discovered in California. Over 300,000 people rushed to California to find gold and strike it rich. Gold Is Found in California. Gold was first discovered in California by James Marshall at Sutter's Mill near the city of Coloma.