John Dalton Facts

John Dalton Facts
John Dalton (September 6, 1766 to July 27, 1844) was a British scientist who made many important contributions to various fields of study. While he is probably best known for his groundbreaking research and contributions to atomic theory, colorblindness is often referred to as Daltonism due to his important work in the field.
Interesting John Dalton Facts:
As a Quaker, also designated as a Dissenter in England, Dalton was not allowed to attend or hold a university position. He taught instead at a school his brother founded for Quaker students in Kendal.
He went on to be named a mathematics and philosophy teacher at the New College in Manchester.
When the college fell into financial problems, Dalton became a private tutor in Manchester.
It was discovered in 1995 that Dalton actually had a very rare form of colorblindness, a fact that Dalton himself studied in great detail and published on many times. He was one of the first to theorize that colorblindness was a genetic feature, as his brother was also colorblind.
Due to Dalton's rare form of colorblindness, he was only able to see one color, yellow.
Dalton was also very influential in the study of meteorology, and many of his ideas were not altered until the invention of the airplane and weather balloons.
His work in meteorology, specifically barometric pressure, then led to his publication of a series of papers called Experimental Essays in which he discussed the make up of mixed gases.
He also researched and wrote on the constitution of steam at different temperatures, specifically its atmospheric pressure.
Dalton also included his findings based on research in evaporation of liquids and thermal expansion.
In 1803, he theorized what has now become known as Dalton's Law: essentially it states that the total pressure of combined gases is equal to the partial pressures of each of those gases separately.
Dalton's research had a tremendous impact on atomic theory, as his work on the physical properties of different gases required there to be a physical structure to atoms.
From his understanding of atoms, Dalton also published a listing of atomic weights for six different elements: hydrogen, oxygen, nitrogen, carbon, sulfur, and phosphorous.
His work led him to conclude that chemical combinations happen between particles of different atomic weights, a groundbreaking concept that outshone the assumptions of many of the ancient Greeks.
Dalton's interpretation of atomic theory maintained that atoms are combined in chemical reactions, but also that they can be separated and rearranged.
However, Dalton concluded that the atoms themselves could not be separated or created.
Different elements' atoms can combine in set ratios to produce new compounds.
One of his most important contributions is also his work on the principles of volumetric analysis.


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