August Krogh

About August Krogh

Who is it?: Zoophysiologist
Birth Day: November 15, 1874
Birth Place: Grenå, Danish
Known for: Krogh's principle
Awards: Nobel Prize in Physiology or Medicine
Fields: Zoophysiology
Institutions: University of Copenhagen
Influences: Christian Bohr, A. Bornstein
Influenced: Joseph Barcroft, Torkel Weis-Fogh

August Krogh

August Krogh was born on November 15, 1874 in Grenå, Danish, is Zoophysiologist. August Krogh was a Danish professor who was conferred with the Nobel Prize in Physiology or Medicine in 1920 for his discovery of the mechanism of regulation of the capillaries in the skeletal muscle. His contribution to understanding the anatomy and physiology of the capillary system has been exceptionally remarkable and noteworthy. A prodigious child, Krogh showed an interest in natural sciences early on his life. It was a lecture by Christian Bohr that made Krogh turn to physiology as his career option. He became a pioneer in comparative studies of animals. Furthermore, he made a number of fundamental and revolutionary discoveries in the fields of physiology, and became famous for developing the Krogh Principle. He served as the Professor of the department of zoophysiology at the University of Copenhagen from 1916 to 1945. Interestingly, Krogh in his lifetime devised a number of instruments and machines that aided in his physiological study. His recording spirometer is till date used in many hospitals, his bicycle ergometer is one of the most valued working machines, his precision pipettes and respiration apparatus improved methods for gas analysis. They reflect a constructive side of Krogh that remained veiled behind his outstanding achievements as a scientist.
August Krogh is a member of Scientists

Does August Krogh Dead or Alive?

As per our current Database, August Krogh has been died on September 13, 1949(1949-09-13) (aged 74)\nCopenhagen.

🎂 August Krogh - Age, Bio, Faces and Birthday

When August Krogh die, August Krogh was 74 years old.

Popular As August Krogh
Occupation Scientists
Age 74 years old
Zodiac Sign Sagittarius
Born November 15, 1874 (Grenå, Danish)
Birthday November 15
Town/City Grenå, Danish
Nationality Danish

🌙 Zodiac

August Krogh’s zodiac sign is Sagittarius. According to astrologers, Sagittarius is curious and energetic, it is one of the biggest travelers among all zodiac signs. Their open mind and philosophical view motivates them to wander around the world in search of the meaning of life. Sagittarius is extrovert, optimistic and enthusiastic, and likes changes. Sagittarius-born are able to transform their thoughts into concrete actions and they will do anything to achieve their goals.

🌙 Chinese Zodiac Signs

August Krogh was born in the Year of the Dog. Those born under the Chinese Zodiac sign of the Dog are loyal, faithful, honest, distrustful, often guilty of telling white lies, temperamental, prone to mood swings, dogmatic, and sensitive. Dogs excel in business but have trouble finding mates. Compatible with Tiger or Horse.

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He was born in Grenaa on the peninsula of Djursland in Denmark, the son of Viggo Krogh, a shipbuilder. He was educated at the Aarhus Katedralskole in Aarhus. He attended the University of Copenhagen graduating MSc in 1899 and gaining a doctorate PhD in 1903.


He married Marie Jorgenson in 1905. Much of Krogh's work was carried out in collaboration with his wife, Marie Krogh (1874–1943), a renowned scientist in her own right.


Krogh began lecturing in the University of Copenhagen in 1908 and in 1916 was promoted to full Professor becoming the head of the first laboratory for animal physiology (zoophysiology) at the university.


Krogh was a pioneer in comparative physiology. He wrote his thesis on the respiration through the skin and lungs in frogs: Respiratory Exchange of Animals, 1915. Later Krogh took on studies of water and electrolyte homeostasis of aquatic animals and he published the books: Osmotic Regulation (1939) and Comparative Physiology of Respiratory Mechanisms (1941). He contributed more than 200 research articles in international journals. He was a constructor of scientific instruments of which several had considerable practical importance, e.g. the spirometer and the apparatus for measuring basal metabolic rate.


August and Marie had four children, the youngest of whom, Bodil, was born in 1918. She too was a Physiologist, and became the first woman President of the American Physiological Society in 1975. Bodil married another eminent Physiologist, Knut Schmidt-Nielsen.


In 1920 August Krogh was awarded the Nobel Prize in Physiology or Medicine for the discovery of the mechanism of regulation of the capillaries in skeletal muscle. Krogh was first to describe the adaptation of blood perfusion in muscle and other organs according to demands through opening and closing the arterioles and capillaries.


Krogh and his wife Marie brought insulin to Denmark shortly after its discovery in 1922 by Nicolae Paulescu. Marie, a Doctor who had patients with type 1 diabetes, was herself suffering from type 2 diabetes and was naturally very interested in the disease. Together with a Doctor, Hagedorn, August and Marie Krogh founded Nordisk Insulinlaboratorium, where Krogh made decisive contributions to establishing a Danish production of insulin by ethanol extraction of the hormone from the pancreatic glands of pigs.


In the 1930s, Krogh worked with two other Nobel prizewinners, the radiochemist George de Hevesy and the Physicist Niels Bohr on the permeability of membranes to heavy water and radioactive isotopes, and together they managed to obtain Denmark's first cyclotron for experiments on animal and plant physiology, as well as in dental and medical work.


Torkel Weis-Fogh, an eminent pioneer on the study of insect FLIGHT, was a student of August Krogh's. Together they wrote a classic paper on that subject in 1951.

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