Thames Tunnel The oldest underwater tunnel in the world. (0.4 km) (1825 - 1843). Severn Tunnel One of the oldest underwater tunnels in the world (3.62 km) (1873 - 1886). Chesapeake Bay Bridge Tunnel (23 miles (37 km)), connecting Virginia Beach with the Eastern Shore of Virginia (1960 - 1964).
Business Productivity is the ability of an organization to utilize its available resources in order to produce profitable goods or services as desired by customers or clients. It is the productivity that measures the performance of an organization...
Productivity is useful as a relative measure of actual output of production compared to the actual input of resources, measured across time or against common entities. As output increases for a level of input, or as the amount of input decreases for a constant level of output, an increase in productivity occurs.Therefore, a productivity measure describes how well the resources of an organization are being used to produce input. Productivity is often confused with efficiency.Efficiency is generally seen as the ratio of the time needed to perform a task to some predetermined standard time.herefore, a productivity measure describes how well the resources of an organization are being used to produce input. Productivity is often confused with efficiency. Efficiency is generally seen as the ratio of the time needed to perform a task to some predetermined standard time.