Tank Mask ‘Masks like this one were worn by British crews in tanks during the First World War. The leather mask is shaped to fit around the eyes and nose and the chain mail was used to protect against splinters from explosions as the tank came under fire. Life inside these primitive vehicles would have been extremely uncomfortable as well as dangerous.’ ~Protective face mask, United Kingdom, 1917-1918)
Rudolf Carnap (May 18, 1891 – September 14, 1970) was a German-born philosopher who was active in Europe before 1935 and in the United States thereafter. He was a major member of the Vienna Circle and an advocate of logical positivism.