JOHN DALTON (1766 - 1844)
PROFILE OF ENGLISH MAN
JOHN DALTON ON COIN
Dalton was a British physicist and chemist who gave us the atomic theory which was later called Dalton’s atomic theory.
Dalton was almost self taught. He began his career as a teacher. But his earnings were very heagre. So he worked in farms to enhance his earnings. However in 1793 Dalton became a lecturer in mathematics and natural philosophy at new college in Manchester. With the publication of his atomic theory he became one of the most famous men in Europe. His atomic investigation appeared in a new system of chemical philosophy. He was elected a fellow of the Royal Society in 1822 and 1830. he was one of the eight foreign associates of the French Academy of Sciences.
Dalton earlier essays in science were published in the Centleman’s dairy and the Ladies diary. He was also the author of a series of essays on his meteorological investigations.
Dalton resigned from Manchester college. As a source of earning money he wrote a book on grammar which was interesting and original. He spent rest of his life studying chemical processes.
The basic postulates of the atomic theory are that matter consists of small individual units called atoms. Atoms can neither be created nor he destroyed. All atoms of the same element are identical and different elements have different types of atoms, and that chemical reactions take place by rearrangement of atoms. Using this theory Dalton rationalized the various laws of chemical combination namely law of conservation of mass, law of definite proportions and law of multiple proportions.
Law of multiple proportions or Dalton’s law states that when two elements combine to form more than one compound, the amounts of one of them which combine with a fixed amount of the other exhibit a simple multiple relations.
Dalton was almost self taught. He began his career as a teacher. But his earnings were very heagre. So he worked in farms to enhance his earnings. However in 1793 Dalton became a lecturer in mathematics and natural philosophy at new college in Manchester. With the publication of his atomic theory he became one of the most famous men in Europe. His atomic investigation appeared in a new system of chemical philosophy. He was elected a fellow of the Royal Society in 1822 and 1830. he was one of the eight foreign associates of the French Academy of Sciences.
Dalton earlier essays in science were published in the Centleman’s dairy and the Ladies diary. He was also the author of a series of essays on his meteorological investigations.
Dalton resigned from Manchester college. As a source of earning money he wrote a book on grammar which was interesting and original. He spent rest of his life studying chemical processes.
The basic postulates of the atomic theory are that matter consists of small individual units called atoms. Atoms can neither be created nor he destroyed. All atoms of the same element are identical and different elements have different types of atoms, and that chemical reactions take place by rearrangement of atoms. Using this theory Dalton rationalized the various laws of chemical combination namely law of conservation of mass, law of definite proportions and law of multiple proportions.
Law of multiple proportions or Dalton’s law states that when two elements combine to form more than one compound, the amounts of one of them which combine with a fixed amount of the other exhibit a simple multiple relations.
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