John Dalton (1766 - 1844)

John Dalton was a British chemist which born from noble family. Dalton was the first man that gives explanation scientifically about color-blind (1794), a condition which he suffers and known as "Daltonism". Dalton noted more than 200,000 atmosphere research and researched gas mixture and gas expansion when they were heated. Dalton's law is still used to describe the law of partial pressure in chemistry. This work brought him to his greatest contribution in chemistry, that is an atomic theory of matter which has scientific base. He started teaching his discovery in 1803 and published his discoveries in A New System of Chemical Philosophy in 1808.

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