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.
Some failed, some were successful, but nearly all of the prospectors faced severe hardships during their fortune-hunting days. Today, 165 years after that first discovery check out eight facts you may not know about the California Gold Rush. 1. California did not have the first gold rush in American history. That honor actually belongs to North Carolina. Fifty years before gold was discovered at Sutterâs mill, the first gold rush in American history got underway after a 17-pound gold nugget was found in Cabarrus County, North Carolina.