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.
He was wrong and, less than six years later, Mexico would cede California to the United States nine days after the largest gold strike in history. THE GOLD RUSH: James Marshall discovered gold at Sutter's Mill on the American River near Coloma, California, on January 24, 1848.He reported the find to his partner, John Sutter, on January 28, 1848. Even though Sutter and Marshall tried to keep the discovery a secret, word began to leak out within a few days.HE GOLD RUSH: James Marshall discovered gold at Sutter's Mill on the American River near Coloma, California, on January 24, 1848. He reported the find to his partner, John Sutter, on January 28, 1848.