The second Industrial Revolution was that of electricity, internal combustion engine, running water, indoor toilets, communications, entertainment, chemicals, petroleum which went from 1870 to 1900.
The third Industrial Revolution was that of computers, the web, mobile phones went from 1960 to present.
Economic growth thus gradually accelerated after 1750, reached a peak in the middle of the 20th century, and has been slowing down since. His (Robert Gordon) thesis is that the economy is moving back to the “normal” state that it was in from 1300 to 1750, namely, zero growth. more> http://tinyurl.com/kzjj5kt