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:
“Through a series of gradual power losses, the modern parent is in danger of losing sight of her own child, as well as her own vision and style. It’s a very big price to pay emotionally. Too bad it’s often accompanied by an equally huge price financially.”
—Sonia Taitz (20th century)
“The modern woman is the curse of the universe. A disaster, that’s what. She thinks that before her arrival on the scene no woman ever did anything worthwhile before, no woman was ever liberated until her time, no woman really ever amounted to anything.”
—Adela Rogers St. Johns (1894–1988)
“Grief that is dazed and speechless is out of fashion: the modern woman mourns her husband loudly and tells you the whole story of his death, which distresses her so much that she forgets not the slightest detail about it.”
—Jean De La Bruyère (1645–1696)