Caption Gas cell drawing. Inside, an extremely powerful laser strikes helium gas, heats it into a plasma and creates waves that kick electrons from the gas out in a high-energy electron beam ...

stood trial for a drawing that showed Jesus on a cross with a gas mask, titled Maul halten und weiter dienen (Shut up and do your duty). The work was created, along with some 300 others ...

More than 40 million gas masks were issued. In America there was a gas mask for children that looked like Mickey Mouse, with the character's nose and ears and even a picture of him on the gas filter.