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	{{~~jpg-image~~}}		{{Short description\|English chemist and physiologist}}
	John Mayow (~~1641–1679~~) was ~~a 17th-century~~ English chemist~~, physician,~~ and physiologist who ~~made significant contributions to the~~ early ~~study of respiration and~~ the nature of ~~air~~. Mayow conducted experiments that led him to conclude that air is not a single element but contains a life-supporting substance, which he called "spiritus nitroaereus". Although his theories were not entirely accurate by modern standards, they were remarkably prescient for his time and laid ~~the~~ groundwork for ~~future~~ discoveries in ~~respiratory physiology~~ and ~~chemistry~~.		{{Use dmy dates\|date=October 2023}}

			'''John Mayow''' (1641 – 1679) was an English chemist and physiologist who is best known for his early studies on the nature of combustion and respiration. His work laid important groundwork for later discoveries in chemistry and biology.

	==Early Life and Education==		==Early Life and Education==
	John Mayow was born in ~~London~~, England~~, in 1641~~. He studied at Wadham College, Oxford, where he developed an interest in chemistry ~~and medicine~~. ~~After completing his studies at Oxford,~~ Mayow ~~pursued a career in medicine, becoming a successful physician~~.		John Mayow was born in 1641 in [[Cornwall]], England. He studied at [[Wadham College, Oxford]], where he developed an interest in natural philosophy and the emerging field of chemistry. Mayow was influenced by the work of [[Robert Boyle]] and other contemporary scientists.

	==Scientific Contributions==		==Scientific Contributions==
	Mayow's most ~~notable work was in the field of~~ respiration. ~~Through~~ his experiments, ~~he observed~~ that a component of the air ~~(which he identified as spiritus nitroaereus)~~ was consumed during combustion ~~and respiration~~. ~~Mayow theorized~~ that ~~this substance~~ was ~~also responsible~~ for ~~the color of blood, suggesting an early understanding of the role of oxygen~~ in ~~blood oxidation, although the concept of oxygen would not be defined until over~~ a ~~century later by Antoine Lavoisier~~.		Mayow is most renowned for his experiments and theories regarding combustion and respiration. He proposed that both processes involved a common substance, which he called "spiritus nitro-aereus," a precursor concept to what would later be understood as [[oxygen]].
	~~In addition~~ to ~~his work on respiration~~, ~~Mayow studied~~ the ~~properties of gases, and he~~ was ~~among~~ the ~~first to suggest that air pressure could affect chemical reactions and the boiling point~~ of ~~liquids. His work~~ in ~~this area anticipated later discoveries in the field of pneumatic chemistry~~.
	~~Mayow also made contributions to the study of muscular movement, theorizing~~ that ~~muscle contraction~~ was ~~caused~~ by the ~~reaction of nerves~~ and ~~certain chemicals, a hypothesis that hinted at the modern understanding of muscle physiology~~.		===Combustion Experiments===
			[[File:Mayow_John_burning_expt.jpg\|thumb\|right\|Illustration of Mayow's burning experiment]]
			In his experiments, Mayow demonstrated that a candle burning in a closed container would extinguish after a certain amount of time, suggesting that a component of the air was consumed during combustion. He also showed that the same component was necessary for respiration by placing a mouse in a similar closed environment.

			===Respiration Studies===
			Mayow extended his ideas to biological systems, proposing that the "spiritus nitro-aereus" was also involved in the process of respiration in animals. He suggested that this substance was absorbed by the blood in the lungs and was essential for life.

	==Legacy==		==Legacy==
	John Mayow's work was ahead of its time. Although his theories were not immediately recognized, they contributed to the foundation of several scientific fields, including respiratory physiology, chemistry, and the study of gases. His innovative approach to scientific inquiry, emphasizing experimentation and observation, was a precursor to the methods of modern science.		John Mayow's work was largely forgotten until the late 18th century when [[Antoine Lavoisier]] and others rediscovered the principles of combustion and respiration. Mayow's early insights were recognized as significant contributions to the development of modern chemistry and physiology.
	~~Mayow's contributions were~~ largely forgotten until the ~~19th~~ century when ~~his work was~~ rediscovered ~~and appreciated for its early insights into~~ the ~~composition~~ of ~~air~~ and ~~the process of~~ respiration. ~~Today, John~~ Mayow ~~is remembered~~ as ~~a pioneering figure in~~ the ~~history~~ of ~~science, whose early experiments~~ and ~~theories helped pave the way for future discoveries~~.
	==~~Death~~==		==Related pages==
	~~John Mayow died in 1679 at the age of 38. Despite his early death, his work left a lasting impact on the fields~~ of chemistry~~, physiology, and medicine.~~		* [[Robert Boyle]]
			* [[Antoine Lavoisier]]
			* [[History of chemistry]]
			* [[Oxygen]]

	[[Category:English chemists]]		[[Category:English chemists]]
	~~[[Category:Physiologists]]~~
	[[Category:1641 births]]		[[Category:1641 births]]
	[[Category:1679 deaths]]		[[Category:1679 deaths]]
	~~{{science-stub}}~~		[[Category:Alumni of Wadham College, Oxford]]

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{{jpg-image}}
John Mayow (1641–1679) was a 17th-century English chemist, physician, and physiologist who made significant contributions to the early study of respiration and the nature of air. Mayow conducted experiments that led him to conclude that air is not a single element but contains a life-supporting substance, which he called "spiritus nitroaereus". Although his theories were not entirely accurate by modern standards, they were remarkably prescient for his time and laid the groundwork for future discoveries in respiratory physiology and chemistry.
==Early Life and Education==
John Mayow was born in London, England, in 1641. He studied at Wadham College, Oxford, where he developed an interest in chemistry and medicine. After completing his studies at Oxford, Mayow pursued a career in medicine, becoming a successful physician.
==Scientific Contributions==
Mayow's most notable work was in the field of respiration. Through his experiments, he observed that a component of the air (which he identified as spiritus nitroaereus) was consumed during combustion and respiration. Mayow theorized that this substance was also responsible for the color of blood, suggesting an early understanding of the role of oxygen in blood oxidation, although the concept of oxygen would not be defined until over a century later by Antoine Lavoisier.
In addition to his work on respiration, Mayow studied the properties of gases, and he was among the first to suggest that air pressure could affect chemical reactions and the boiling point of liquids. His work in this area anticipated later discoveries in the field of pneumatic chemistry.
Mayow also made contributions to the study of muscular movement, theorizing that muscle contraction was caused by the reaction of nerves and certain chemicals, a hypothesis that hinted at the modern understanding of muscle physiology.
==Legacy==
John Mayow's work was ahead of its time. Although his theories were not immediately recognized, they contributed to the foundation of several scientific fields, including respiratory physiology, chemistry, and the study of gases. His innovative approach to scientific inquiry, emphasizing experimentation and observation, was a precursor to the methods of modern science.
Mayow's contributions were largely forgotten until the 19th century when his work was rediscovered and appreciated for its early insights into the composition of air and the process of respiration. Today, John Mayow is remembered as a pioneering figure in the history of science, whose early experiments and theories helped pave the way for future discoveries.
==Death==
John Mayow died in 1679 at the age of 38. Despite his early death, his work left a lasting impact on the fields of chemistry, physiology, and medicine.
[[Category:English chemists]]
[[Category:Physiologists]]
[[Category:1641 births]]
[[Category:1679 deaths]]
{{science-stub}}

John Mayow - Revision history

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