Arthur Louis Day
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Arthur Louis Day (October 30, 1869 – March 2, 1960) was an American geophysicist and
volcanologist A volcanologist, or volcano scientist, is a geologist who focuses on understanding the formation and eruptive activity of volcanoes. Volcanologists frequently visit volcanoes, sometimes active ones, to observe and monitor volcanic eruptions, col ...
. He studied high temperature
thermometry Temperature measurement (also known as thermometry) describes the process of measuring a current local temperature for immediate or later evaluation. Datasets consisting of repeated standardized measurements can be used to assess temperature tren ...
,
seismology Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other ...
and geothermal energy.


Early life

Day was born in
Brookfield, Massachusetts Brookfield is a town in Worcester County, Massachusetts, United States. Brookfield was first settled by Europeans in 1660. The population was 3,439 at the 2020 census. History Brookfield was first settled by Europeans in 1660 and was officiall ...
and received his
A.B. Bachelor of arts (BA or AB; from the Latin ', ', or ') is a bachelor's degree awarded for an undergraduate program in the arts, or, in some cases, other disciplines. A Bachelor of Arts degree course is generally completed in three or four yea ...
from
Sheffield Scientific School Sheffield Scientific School was founded in 1847 as a school of Yale College in New Haven, Connecticut, for instruction in science and engineering. Originally named the Yale Scientific School, it was renamed in 1861 in honor of Joseph E. Sheffiel ...
at
Yale University Yale University is a Private university, private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the List of Colonial Colleges, third-oldest institution of higher education in the United Sta ...
in 1892. He earn his
Ph.D A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is ...
from Sheffield in 1894, and taught at Yale until 1897. Day received an
honorary doctorate An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or ''ad hon ...
from the
University of Groningen The University of Groningen (abbreviated as UG; nl, Rijksuniversiteit Groningen, abbreviated as RUG) is a public research university of more than 30,000 students in the city of Groningen in the Netherlands. Founded in 1614, the university is th ...
(The Netherlands) on July 1, 1914.


Career

In 1894 and 1895 he worked with German physicist Friedrich Kohlrausch studying the
conductive In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. Electric current is gene ...
properties of
electrolytes An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water. Upon di ...
. From 1897 to 1900 he worked at Physikalisch-Technische Bundesanstalt in
Berlin Berlin ( , ) is the capital and List of cities in Germany by population, largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's List of cities in the European Union by population within ci ...
and began his study of thermometry. He worked with the
U.S. Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and ...
from 1900 to 1907 studying the properties of rocks and minerals at very high and low temperatures. Day served as the director of the Geophysical Laboratory of the
Carnegie Institution for Science The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research. Th ...
from 1907 until his retirement in 1936. From 1933 to 1941 he served as vice president of the National Academy of Sciences. He was president of
The Geological Society of America The Geological Society of America (GSA) is a nonprofit organization dedicated to the advancement of the geosciences. History The society was founded in Ithaca, New York, in 1888 by Alexander Winchell, John J. Stevenson, Charles H. Hitchco ...
in 1938. Following his retirement, he traveled to New Zealand to continue his study of
seismology Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other ...
and geothermal energy. He studied the area's volcanic areas until he had to stop his research in 1946 due to poor health. He died on March 2, 1960, in
Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...


Awards and legacy

Day was awarded the
John Scott Medal John Scott Award, created in 1816 as the John Scott Legacy Medal and Premium, is presented to men and women whose inventions improved the "comfort, welfare, and happiness of human kind" in a significant way. "...the John Scott Medal Fund, establish ...
, the
Wollaston Medal The Wollaston Medal is a scientific award for geology, the highest award granted by the Geological Society of London. The medal is named after William Hyde Wollaston, and was first awarded in 1831. It was originally made of gold (1831–1845), ...
, the
Penrose Medal The Penrose Medal was created in 1925 by R.A.F. Penrose, Jr., as the top prize awarded by the Geological Society of America. Originally created as the Geological Society of America Medal it was soon renamed the Penrose Medal by popular assent of t ...
, the Bakhuis Roozeboom Medal and the
William Bowie Medal The William Bowie Medal is awarded annually by the American Geophysical Union for "outstanding contributions to fundamental geophysics and for unselfish cooperation in research". The award is the highest honor given by the AGU and is named in honor ...
. In 1948, Day established the Arthur L. Day Medal through the
Geological Society of America The Geological Society of America (GSA) is a nonprofit organization dedicated to the advancement of the geosciences. History The society was founded in Ithaca, New York, in 1888 by Alexander Winchell, John J. Stevenson, Charles H. Hitch ...
. The medal is for "outstanding distinction in contributing to geologic knowledge through the application of physics and chemistry to the solution of geologic problems".


Family life

Day was the son of Daniel P. and Fanie (Hobbs) Day. In 1900, he married Helen Kohlrausch, daughter of physicist Friedrich Kohlrausch. Day and his wife had four children: Margaret, Dorothy, Helen and Ralph. In 1933, he married Ruth Sarah Easling. They had no children together.


References


External links


Portrait of Arthur Louis Day

National Academy of Sciences Biography
{{DEFAULTSORT:Day, Arthur 1869 births 1960 deaths American geologists American geophysicists Wollaston Medal winners Penrose Medal winners American volcanologists People from Brookfield, Massachusetts Yale School of Engineering & Applied Science alumni Yale University faculty University of Groningen alumni United States Geological Survey personnel