Showing results for "Clay" in Engineering

At the end of the last century, Johnstown, Pennsylvania, was a booming coal-and-steel town filled with hardworking families striving for a piece of the nation's burgeoning industrial prosperity. In the mountains above Johnstown, an old earth dam had been hastily rebuilt to create a lake for an exclusive summer resort patronized by the tycoons of that same industrial prosperity, among them Andrew Carnegie, Henry Clay Frick, and Andrew Mellon.

Before the advent off the wireless technology era, the existing communication technologies were primarily powered by wired technology. From the telephone to the fax machine, communication was not possible without a physical connection between the communication device and the source of the power of the device. For instance, there had to be a connection between a wired telephone and the dial board for communication to be possible. Just as with every other wired device, wireless communication has successfully displaced wired communication.