Unwelcome Components of Breathing Gases
Many gases are not suitable for use in diving breathing gases. Here is an incomplete list of gases commonly present in a diving environment:
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“If you corner me, you are going to hear some unwelcome truths.”
—Mason Cooley (b. 1927)
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“The bird is not in its ounces and inches, but in its relations to Nature; and the skin or skeleton you show me, is no more a heron, than a heap of ashes or a bottle of gases into which his body has been reduced, is Dante or Washington.”
—Ralph Waldo Emerson (1803–1882)