by admin | Mar 5, 2018 | Technology
Graph of US iron and steel production, 1900-2014, data from USGS Percentages of US steel making processes, 1900-2012. Data from USGS and US Bureau of Mines Minerals Yearbook. Source: Wikipedia
by admin | Apr 5, 2017 | Technology
“The pink curve on the graph shows the mean driving distance for PGA tour professionals for every year between 1980 and 2008. The two curves either side show the average plus and minus 1 standard deviation (a measure of the variation amongst the golfers). The...
by Gary Hoover | Jan 19, 2017 | Technology
— In 1900, <10% of families owned a stove, or had access to electricity or phones — In 1915, <10% of families owned a car — In 1930, <10% of families owned a refrigerator or clothes washer — In 1945, <10% of families owned a clothes...
