San Francisco Bay Area is home to approximately 7.68 million people.
Westinghouse Park is a city-block sized municipal park in Pittsburgh , Pennsylvania .. Pittsburgh. Pittsburgh, Pennsylvania. Pennsylvania. Pennsylvania. The park land is the former estate of George Westinghouse , an American entrepreneur and engineer , and his wife Marguerite .. George Westinghouse. George Westinghouse. American. United States. entrepreneur. entrepreneur. engineer. engineer. With an area of about 10 acres , it was the site of his mansion known as Solitude .. At this house , Westinghouse worked with his engineers , including Nikola Tesla , and entertained notable people of the day , including scientist William Thomson -LRB- Lord Kelvin -RRB- , and congressman and later president William McKinley .. Nikola Tesla. Nikola Tesla. Lord Kelvin. Lord Kelvin. William McKinley. William McKinley. Close by was another building , a carriage house , that housed his private laboratory in the basement .. There , he developed some of his residential electric lighting technology , installing a generator and running cables to the main house , with wires that were left exposed on the interior walls , so as not to cut into the woodwork .. Also there , Westinghouse invented methods to control and transmit natural gas for both industrial and residential consumers .. natural gas. natural gas. In the winter of 1883 / 1884 , seeking a source of natural gas in his own `` back yard , '' Westinghouse ordered drilling on his estate .. natural gas. natural gas. When gas was struck on May 22 , 1884 , a blowout resulted in the uncontrolled release of gas for about a week .. Westinghouse devised a way to cap the well .. An illumination test was conducted by igniting the gas jet at the top of a tall pipe .. It initially produced a 100-foot flame that illuminated a mile-wide area to a brightness sufficient to read a newspaper .. This well was designated as `` Westinghouse Well No. 1 '' or `` Old No. 1 '' to distinguish it from several other wells that were drilled in the area .. Eventually , several natural gas derricks towered above the estate 's Victorian gardens .. natural gas. natural gas. In modern times there is no above-ground trace left of these derricks .