Pneumatic tool Pneumatic tool A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air, supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide () stored in small cylinders allowing for portability. Most pneumatic tools convert the compressed air to work using a pneumatic motor. Compared to their electric power tool equivalents, they are safer to run and maintain, without risk of sparks, short-circuiting or electrocution, and have a higher power to weight ratio, allowing a smaller, lighter tool to accomplish the same task. Furthermore, they are
The Work of Art in the Age of Mechanical Reproduction free", for lacking the "aura" of the original work of art. The Work of Art in the Age of Mechanical Reproduction The Work of Art in the Age of Mechanical Reproduction (1935, "Das Kunstwerk im Zeitalter seiner technischen Reproduzierbarkeit"), by Walter Benjamin, is an essay of cultural criticism which proposes that the "aura" of a work of art is devalued by mechanical reproduction. The subject and themes of the essay have much influenced the fields of art history and architectural theory, and of cultural studies and media theory. During the Nazi régime (1933–1945) in Germany, Benjamin wrote the essay to