J. R. Eyerman
One of a series of photos appearing in LIFE Magazine. Scientists demonstrating on a chalkboard how to calculate the orbit of satellites…yet to be launched by anyone in the GOUSA.
Your smartphone or tablet has sufficient horsepower to crank out in a few seconds what this group of scientists worked on for hours in 1957.
December 1951 advertisement for the IBM 604 Electronic Calculating Punch explicitly comparing electronic computers to engineers calculating with slide rules, which were mechanical analog computers.