Important new technologies were introduced in textiles, energy and transportation. Its cumulative character led to it being called the

The process that takes a set of materials and other inputs—including the work of people and machines—and creates an output is called

A change in technology that reduces the amount of resources (labor, machines, land, energy, time) required to produce a given amount of the output.

By reducing the amount of work-time it takes to produce the things we need, technological changes allowed significant increases in

We measure technological progress in lighting by how many units of brightness called _________ could be generated by an hour of work.

The permanent technological revolution has produced a