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.
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Famous quotes containing the word modern:
“We Irish, born into that ancient sect
But thrown upon this filthy modern tide
And by its formless spawning fury wrecked,
Climb to our proper dark, that we may trace
The lineaments of a plummet-measured face.”
—William Butler Yeats (1865–1939)
“The Oriental philosophy approaches easily loftier themes than the modern aspires to; and no wonder if it sometimes prattle about them. It only assigns their due rank respectively to Action and Contemplation, or rather does full justice to the latter. Western philosophers have not conceived of the significance of Contemplation in their sense.”
—Henry David Thoreau (1817–1862)
“I may be old-fashioned. I don’t like this modern movement.... And yet, there are certain sorts of work a woman may well do; teaching, being governess, or any taking care of children.”
—Julia Dent Grant (1826–1902)