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.
This ended the California Gold Rush. Hereâs a brief account of what happened during Californiaâs gold rush between 1849 and 1859. The California Gold Rush was the largest migration of people to California, and started California on the road to what it is today.By 1849 the gold rush was on.People from all over the United States and the World were rushing to California.he California Gold Rush was the largest migration of people to California, and started California on the road to what it is today. By 1849 the gold rush was on. People from all over the United States and the World were rushing to California.