A "'dive computer "', "'personal decompression computer "'or "'decompression meter "'is a device used by an underwater diver to measure the time and depth of a dive so that a safe ascent profile can be calculated and displayed so that the diver can avoid decompression sickness.
32.
Ensuing issues featured purported quotes from underwater divers supplying " positive proof " that the Spanish, in spite of their denials, had masterminded the gory disaster . ( Years later, official examinations of the hull would speculate that the Maine had blown up internally, probably from combustion or accidental fire in the coal supply, setting off explosions of the adjacent ammunition stores .)
33.
In a 9th-century Arab work " Kitb al-Khawss al Kab + r ", there are numerous products listed that were native to China, including waterproof and dust-repelling cream or varnish for clothes and weapons, a Chinese and Indian ink, a waterproof cream for the silk garments of underwater divers, and a cream specifically used for polishing mirrors.