【See】How is this different from the way people washed their clothes two hundred years ago?
【Think】Why did people make these changes?
Exhibition 2｜One hundred years ago - washing tools invented by humans
Noema: Humans innovated tools to ease the labor-intensive process of agitating laundry water and experimented with the use of a drum for water extraction. From labor force to motor, the critical transition is the invention of electricity hundred years ago.
Progress：4/7
