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Aqua

Aqua. aqua definition aqua noun pl. water; esp., in pharmacy, a solution of a substance in water. Cartographer. car·tog·ra·pher noun a person whose work is making maps or charts. Celestial Navigation.

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Aqua

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  1. Aqua aqua definition aqua noun pl. water; esp., in pharmacy, a solution of a substance in water

  2. Cartographer • car·tog·ra·pher • noun • a person whose work is making maps or charts

  3. Celestial Navigation • navigation based on observation of the sun, moon, stars, or planets to determine position

  4. Challenger Expedition • The Challenger expedition of 1872–76 was a scientific exercise that made many discoveries to lay the foundation of oceanography. The expedition was named after the mother vessel, HMS Challenger.

  5. Chronometer • A marine chronometer is a timekeeper precise enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation.

  6. Christopher Columbus • navigator, colonizer, and explorer whose voyages across the Atlantic Ocean led to general European awareness of the American continents in the Western Hemisphere. • Christopher Columbus performed oceanographic studies on his voyages.

  7. Charles Darwin • Darwin collected and studied numerous marine organisms during this famous voyage, which eventually lead to his famous subsidence theory of coral reef formation (for atolls), and a classification of barnacles that is still useful today. Observations he made on the Beagle expedition also provided him with the ideas that he later used to formulate his theory of evolution and natural selection.

  8. Echo Sounder • Echo sounding is the technique of using sound pulses directed from the surface or from a submarine vertically down to measure the distance to the bottom by means of sound waves. • Distance is measured by multiplying half the time from the signal's outgoing pulse to its return by the speed of sound in the water, which is approximately 1.5 kilometres per second. Echo sounding is effectively a special purpose application of sonar used to locate the bottom.

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