Modern
An alternative to the diving helmet that allows communication with the surface is the full face diving mask. These cover the diver's face and are held onto his head by adjustable straps.
"Diving helmet" sometimes means a hard safety helmet like a workman's helmet that covers the top and back of the head, but is not sealed. These may be worn with a full-face mask to provide impact protection.
During the First World War the British Army used a few diving helmets out of water as emergency protection from mustard gas.
Read more about this topic: Diving Helmet
Famous quotes containing the word modern:
“Primitive times are lyrical, ancient times epical, modern times dramatic. The ode sings of eternity, the epic imparts solemnity to history, the drama depicts life. The characteristic of the first poetry is ingeniousness, of the second, simplicity, of the third, truth.”
—Victor Hugo (1802–1885)
“I tell you, sir, the only safeguard of order and discipline in the modern world is a standardized worker with interchangeable parts. That would solve the entire problem of management.”
—Jean Giraudoux (1882–1944)
“... for the modern soul, for which it is mere child’s play to bridge oceans and continents, there is nothing so impossible as to find the contact with the souls dwelling just around the corner.”
—Robert Musil (1880–1942)