Eunice Newton Foote
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Eunice Newton Foote (July 17, 1819 – September 30, 1888) was an American scientist, inventor, and women's rights campaigner. She was the first scientist to conclude that certain gases warmed when exposed to
sunlight Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when t ...
, and that rising carbon dioxide () levels would change atmospheric temperature and could impact climate. Born in Connecticut, Foote was raised in New York at the center of social and political movements of her day, such as the abolition of slavery, anti-alcohol activism, and women's rights. She attended the
Troy Female Seminary The Emma Willard School, originally called Troy Female Seminary and often referred to simply as Emma, is an independent university-preparatory day and boarding school for young women, located in Troy, New York, on Mount Ida, offering grades 9– ...
and the Rensselaer School from age seventeen to nineteen, gaining a broad education in scientific theory and practice. After marrying an attorney in 1841, Foote settled in Seneca Falls, New York. She was a signatory to the Declaration of Sentiments and one of the editors of the proceedings of the 1848 Seneca Falls Convention, the first gathering to treat women's rights as its sole focus. In 1856 she published a paper notable for demonstrating the absorption of heat by and water vapor and hypothesizing that changing amounts of in the atmosphere would alter the climate. It was the first known publication in a
scientific journal In academic publishing, a scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. Content Articles in scientific journals are mostly written by active scientists such as s ...
by a woman in the field of physics. She published a second paper in 1857, on static electricity in atmospheric gases. Although she was not a member of the
American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...
, both her papers were read at the organization's annual conferences. These were the only papers in the field of physics to be written by an American woman prior to 1889. She went on to patent several inventions. Foote died in 1888 and for almost a hundred years her contributions were unknown, before being rediscovered by women academics in the twentieth century. In the twenty-first century, new interest in Foote arose when it was realized that her work predated discoveries made by
John Tyndall John Tyndall FRS (; 2 August 1820 – 4 December 1893) was a prominent 19th-century Irish physicist. His scientific fame arose in the 1850s from his study of diamagnetism. Later he made discoveries in the realms of infrared radiation and the p ...
, who had been recognized by scientists as the first person to experimentally show the mechanism of the greenhouse effect involving infrared radiation. Detailed examination of her work by modern scientists has confirmed that three years before Tyndall published his paper in 1859, Foote discovered that water vapor and absorb heat from sunlight. Furthermore, her view that variances in the atmospheric levels of water vapor and would result in climate change, preceded Tyndall's 1861 publication by five years. Because of the limits of her experimental design, and possibly a lack of knowledge of infrared radiation, Foote did not examine or detect the absorption and emission of radiant energy within the thermal infrared range, which is the cause of the greenhouse effect. In 2022, the American Geophysical Union instituted The Eunice Newton Foote Medal for Earth-Life Science in her honor to recognize outstanding scientific research.


Childhood and education

Eunice Newton was born July 17, 1819, in Goshen, Connecticut, to Thirza and Isaac Newton, Jr. By 1820, the family had relocated to Ontario County in western
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...
. Her father was a farmer and entrepreneur in
East Bloomfield East Bloomfield is a Administrative divisions of New York#Town, town in Ontario County, New York, Ontario County, New York (state), New York, United States. The population was 3,661 at the 2020 census. The Town of East Bloomfield is in the western ...
, amassing wealth and losing it through
speculation In finance, speculation is the purchase of an asset (a commodity, good (economics), goods, or real estate) with the hope that it will become more valuable shortly. (It can also refer to short sales in which the speculator hopes for a decline i ...
. Isaac was a distant relative of the scientist Sir Isaac Newton. Eunice had six sisters and five brothers, although the oldest sister died at two years old. Her father died in 1835 and the fifth child, a daughter named Amanda, took it upon herself to rid the properties of debt and become sole owner to keep the family farm from being sold. The area of New York where Eunice grew up and spent most of her life was the era's center of social activism. She would have been exposed to abolitionists, dress reform activists, mystics, temperance advocates, and women's rights campaigners. Newton was educated at the
Troy Female Seminary The Emma Willard School, originally called Troy Female Seminary and often referred to simply as Emma, is an independent university-preparatory day and boarding school for young women, located in Troy, New York, on Mount Ida, offering grades 9– ...
, a pioneering women's preparatory school, established by feminist Emma Willard. Students of the seminary were encouraged to attend science courses at the adjacent Rensselaer School, which was led by Amos Eaton, the senior professor and a proponent of women's education. Eaton's innovative methods included lectures in scientific theory accompanied by practical experimentation in the laboratory, rather than rote memorization. Newton attended these schools between 1836 and 1838. During Newton's attendance, the assistant principal of the seminary was Willard's sister Almira Hart Lincoln Phelps, who prepared the school's curricula and wrote textbooks for the students. Students were allowed to challenge their marks prior to the weekly meeting evaluating their moral gaps. Rather than the typical
finishing school A finishing school focuses on teaching young women social graces and upper-class cultural rites as a preparation for entry into society. The name reflects that it follows on from ordinary school and is intended to complete the education, wit ...
curricula offered to girls, pupils studied dance, history, languages (English, French, Italian, Latin), literature, mathematics (general, algebra, geometry), music, painting, philosophy,
rhetoric Rhetoric () is the art of persuasion, which along with grammar and logic (or dialectic), is one of the three ancient arts of discourse. Rhetoric aims to study the techniques writers or speakers utilize to inform, persuade, or motivate parti ...
, and science (botany, domestic science). At the Rensselaer School, Newton learned how to conduct research, as well as laboratory testing. Girls attending the school could study astronomy, chemistry, geography, meteorology, and natural philosophy.


Marriage and family life

On August 12, 1841, in East Bloomfield, Newton married Elisha Foote Jr. (1809–1883), a lawyer. Foote had trained in Johnstown, New York, under Judge Daniel Cady, the father of women's right activist
Elizabeth Cady Stanton Elizabeth Cady Stanton (November 12, 1815 – October 26, 1902) was an American writer and activist who was a leader of the women's rights movement in the U.S. during the mid- to late-19th century. She was the main force behind the 1848 Seneca ...
. In 1844, in a sheriff's sale, Elisha bought the
house A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air condi ...
that the Stanton family moved into in 1847. He deeded it the following year to Daniel Cady, who in turn gave it to his daughter, Elizabeth in 1846. Writer Ermina Leonard described Eunice as "a fine portrait and landscape painter", who was also known as an amateur scientist and an inventor. On her 1862 passport application, the officials described Foote as being just under tall, with blue-gray eyes, a "rather large" mouth, with an oval face, a sallow complexion, and dark brown hair. The marriage produced two daughters, Mary, born July 21, 1842, who became an artist, writer and women's rights advocate; and Augusta, born October 24, 1844, who became a writer. Both daughters were born in Seneca Falls. Elisha became a judge who worked at the Court of Common Pleas in Seneca County, but he resigned from his post in 1846. He continued working as a lawyer and Eunice designed and built a laboratory in their home. By the spring of 1860, the family had relocated to Saratoga Springs, New York, where Augusta was privately schooled. Elisha ran a private practice and was a
specialist Specialist may refer to: Occupations * Specialist (rank), a military rank ** Specialist (Singapore) * Specialist (arena football) * Specialist degree, in academia * Specialty (medicine) * Designated market maker, in the American stock market * ...
in patent law. In 1865, Elisha was appointed to serve an apprenticeship on the Board of Examiners-in-Chief for the United States Patent and Trademark Office. The entire family relocated at that time to Washington, D.C. While they were in Washington, both daughters married. Mary wed John B. Henderson, a US Senator from Missouri, a co-author of the 13th Amendment to abolish slavery and an advocate for the 15th Amendment to grant voting rights to former slaves. They had a lavish ceremony in 1868, attended by many dignitaries, including US President
Andrew Johnson Andrew Johnson (December 29, 1808July 31, 1875) was the 17th president of the United States, serving from 1865 to 1869. He assumed the presidency as he was vice president at the time of the assassination of Abraham Lincoln. Johnson was a Dem ...
. The following year, Augusta married Francis Benjamin Arnold, a coffee importer from New York City. After completing his apprenticeship, Elisha was appointed the Commissioner of Patents, serving from July 25, 1868, through April 25, 1869. When his term as commissioner expired, he remained on the Board of Examiners-in-Chief for several years. The couple were living in East Bloomfield in 1872 and 1873, were back in Washington in 1874, but had returned to New York by 1878. They were living in New York City in 1881. While visiting in St. Louis, Missouri, in 1883, Elisha died at Mary's home. After Elisha's death, Eunice lived partly in Brooklyn and partly in
Lenox, Massachusetts Lenox is a town in Berkshire County, Massachusetts. The town is based in Western Massachusetts and part of the Pittsfield Metropolitan Statistical Area. The population was 5,095 at the 2020 census. Lenox is the site of Shakespeare & Company and T ...
.


Campaigner for women's rights

Eunice Foote was a neighbor and friend of suffragist Elizabeth Cady Stanton and attended the 1848 Seneca Falls Convention, the first women's rights convention. As a member of the editorial committee for the convention, Foote and her husband Elisha were signatories of the convention's Declaration of Sentiments. The declaration, written by Stanton, demanded social and legal rights equal to those of men, as well as the right to vote. Foote was one of the five women who prepared the proceedings of the convention for publication; the others were Stanton, Elizabeth M'Clintock,
Mary Ann M'Clintock Mary Ann M'Clintock or ''Mary Ann McClintock'' (1800-1884) is best known for her role in the formation of the women's suffrage movement, as well as abolitionism. Life M'Clintock was born on February 20, 1800 in Burlington, New Jersey. She was mar ...
, and Amy Post.


Scientific career


"Circumstances Affecting the Heat of the Sun's Rays"

An amateur scientist, Foote conducted a series of experiments that demonstrated the interactions of
sunlight Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when t ...
on different gases. She used an air pump, two glass cylinders, and four mercury-in-glass thermometers. In each cylinder, she placed two thermometers and then used the pump to evacuate the air from one cylinder and compress it in the other cylinder. When both cylinders reached equal ambient temperatures, they were placed in the sunlight and temperature variances were measured. She also placed the containers in the shade for comparison and tested the temperature results by dehydrating one cylinder and adding water to the other, to measure the effect of dry versus moist air. Foote noted that the amount of moisture in the air impacted the temperature results. She performed this experiment on air, carbon dioxide () (which was called carbonic acid gas in her era), and hydrogen, finding that the tube filled with carbon dioxide became hotter than the others when exposed to sunlight. She wrote: "The receiver containing this gas became itself much heated—very sensibly more so than the other—and on being removed rom the Sun it was many times as long in cooling". Foote noted that reached a temperature of and that the amount of moisture in the air contributed to temperature variances. In connection with the history of the Earth, Foote theorized that "An atmosphere of that gas would give to our earth a high temperature; and if, as some suppose, at one period of its history, the air had mixed with it a larger proportion than at present, an increased temperature from its own action, as well as from increased weight, must have necessarily resulted." Her theory was a clear statement of climatic warming caused by increased levels of in the atmosphere. Foote described her findings in a paper, "Circumstances Affecting the Heat of the Sun's Rays", that she submitted for the tenth annual AAAS meeting, held on August 23, 1856, in Albany, New York. For reasons that are unclear, Foote did not read her paper to those present – women were in principle allowed to speak publicly at the conference – and her paper was instead presented by
Joseph Henry Joseph Henry (December 17, 1797– May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution. He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smith ...
of the Smithsonian Institution. Henry introduced Foote's paper by stating "Science was of no country and of no sex. The sphere of woman embraces not only the beautiful and the useful, but the true". Yet, he discounted her findings in the '' New-York Daily Tribune'' article about the presentation, saying "although the experiments were interesting and valuable, there were any ifficultiesencompassing nyattempt to interpret their significance". The 1856 edition of the ''
American Journal of Science and Arts The ''American Journal of Science'' (''AJS'') is the United States of America's longest-running scientific journal, having been published continuously since its conception in 1818 by Professor Benjamin Silliman, who edited and financed it himself ...
'' published Foote's complete paper under her
given name A given name (also known as a forename or first name) is the part of a personal name quoted in that identifies a person, potentially with a middle name as well, and differentiates that person from the other members of a group (typically a fa ...
, immediately following a paper by her husband, Elisha. Other than those on astronomy, the paper was the first known publication anywhere in a scientific journal in the field by a woman. It was not however included by the AAAS in their annual publication of the association's meetings. Summaries of Foote's work were included in the 1857 edition of '' The Annual of Scientific Discovery'', the '' Canadian Journal of Industry, Science and Art'' (1857), the ' (''Annual Report on the Progress of Pure, Pharmaceutical, and Industrial Chemistry, Physics, Mineralogy, and Geology, 1856'' ( Giessen, 1857), the '' Edinburgh New Philosophical Journal'' (1857), the newspaper ''New-York Daily Tribune'', and the magazine '' Scientific American'' (1856). Both the Giessen and Edinburgh summaries omitted her direct conclusions about the impact of carbon dioxide on climate. The summary written in the ''Edinburgh New Philosophical Journal'' indicated that two papers had been written, one by Elisha and one by Mrs. Elisha Foote, but the title of Elisha's paper, "On the Heat in the Sun's Rays", was given for both articles, although the summary was entirely devoted to Eunice's paper. Foote was praised in the September 13, 1856, issue of ''Scientific American''. Although the article was titled "Scientific Ladies—Experiments with Condensed Gases", Foote was the primary subject. Impressed that her theories were backed up by experiments, the authors stated, "This we are happy to say has been done by a lady", and noted that "she was deeply acquainted with almost every branch of physical science". In the late 1770s, Horace Bénédict de Saussure had used a similar apparatus to Foote's and concluded that altitude impacted solar heat in an enclosed cylinder.
Joseph Fourier Jean-Baptiste Joseph Fourier (; ; 21 March 1768 – 16 May 1830) was a French people, French mathematician and physicist born in Auxerre and best known for initiating the investigation of Fourier series, which eventually developed into Fourier an ...
had theorized in the 1820s that atmospheric gases trapped solar heat. Neither of them had recognized the increase in solar heat by and water vapor in the atmosphere, which was unique to Foote's findings. In 1859,
John Tyndall John Tyndall FRS (; 2 August 1820 – 4 December 1893) was a prominent 19th-century Irish physicist. His scientific fame arose in the 1850s from his study of diamagnetism. Later he made discoveries in the realms of infrared radiation and the p ...
reported his more sophisticated research, using a Leslie cube and a differential
spectrometer A spectrometer () is a scientific instrument used to separate and measure spectral components of a physical phenomenon. Spectrometer is a broad term often used to describe instruments that measure a continuous variable of a phenomenon where the ...
, showing that several gases both trapped and emitted infrared thermal radiation rather than sunlight. His work, "Note on the Transmission of Radiant Heat through Gaseous Bodies" was published that year in the '' Proceedings of the Royal Society'', of which he was a fellow. Tyndall gave credit to Claude Pouillet's work on solar radiation through the atmosphere, but appeared to be unaware of Foote's work, or did not think it was relevant. Tyndall made no mention of water vapor, carbon dioxide, or climate until his fourth publication on the topic which appeared in the French-language journal ''
Bibliothèque Universelle de Genève A library is a collection of materials, books or media that are accessible for use and not just for display purposes. A library provides physical (hard copies) or digital access (soft copies) materials, and may be a physical location or a vir ...
'' in 1859, and even there, did not make a connection with climate change. After conducting further tests, in 1861 his seminal work on climate, "The Bakerian Lecture: On the Absorption and Radiation of Heat by Gases and Vapours, and on the Physical Connexion of Radiation, Absorption, and Conduction" was presented as a lecture to the Royal Society. It was published later that year in the '' Philosophical Transactions of the Royal Society''.


"On a New Source of Electrical Excitation"

By 1857, Foote was conducting experiments on
static electricity Static electricity is an imbalance of electric charges within or on the surface of a material or between materials. The charge remains until it is able to move away by means of an electric current or electrical discharge. Static electricity is na ...
, which she called "electrical excitation". The studies were designed to test the moisture content and which gases in the air could generate static electricity. She used an air pump with limited power to adjust the air pressure in a glass tube about two feet long and three inches in diameter and sealed at the ends with brass caps. Attached to one cap was a gold leaf electrometer, which allowed her to measure electrical charges and the other cap was attached to the pump. Vacuuming out the atmospheric air, she replaced it with oxygen, hydrogen, and , as well as dry and damp air to test their effect upon the electrical charge. By expanding or compressing air, Foote noted that the moisture content was changed, which in turn affected the amount of static electricity that could be generated. She was working from a hypothesis that electric charges and fluctuations in atmospheric pressure might explain the Earth's magnetic field and
polarity Polarity may refer to: Science * Electrical polarity, direction of electrical current * Polarity (mutual inductance), the relationship between components such as transformer windings * Polarity (projective geometry), in mathematics, a duality of o ...
, which was later shown by other scientists not to be the case. Foote's paper, "On a New Source of Electrical Excitation", was again read by Henry at the annual AAAS conference held in Montreal, on the third day of proceedings, August 14, 1857. In November 1857, her findings were published in the ''Proceedings of the American Association for the Advancement of Science''. The publication of this paper was the first time an American woman's work in physics had been included in the journal. During the nineteenth century, only sixteen physics papers were published by American women. The only two published before 1889 were Foote's 1856 and 1857 papers. Foote's paper was abbreviated and published in the ''American Journal of Science and Arts'' and the '' Philosophical Magazine''. The ''Philosophical Magazine'' had rejected publication of her first paper in favor of reprinting Elisha's 1856 work. The article about Foote's findings published in '' The New-York Daily Times'' on August 18, 1857, praised her work, claiming that her findings had been "never heretofore proven", although in fact, they confirmed the ideal gas law, published in 1834. She proved that adiabatic heating or cooling, or changes in temperature that occur without the addition or removal of heat, is the result of changing pressure. Temperature changes alter the vapor pressure in the air, which in turn, impacts the generation of static electricity.


Inventions

Eunice Foote and her husband Elisha were both inventors. Rachel Brazil, a science writer for ''
Chemistry World ''Chemistry World'' is a monthly chemistry news magazine published by the Royal Society of Chemistry. The magazine addresses current events in world of chemistry including research, international business news and government policy as it affects ...
'', noted in 2020 that Elisha filed a patent in 1842, on a thermostatically controlled cooking stove which had been invented by Eunice. According to Brazil, Eunice's inventions were typically "patented in her husband's name, because married women could not defend patents in court". Foote herself acknowledged the practice in 1868, when Stanton visited her at the patent office. She told Stanton that in her opinion half of the patents filed were on inventions by women but because men controlled the money needed to make a model and sought the prestige, they took women's patents out in their own names. In 1857, Elisha was awarded a substantial settlement for infringement on the 1842 stove patent. Eunice filed a patent in her own name in 1860 on a shoe and boot insert made of a single piece of
vulcanized rubber Vulcanization (British: Vulcanisation) is a range of processes for hardening rubbers. The term originally referred exclusively to the treatment of natural rubber with sulfur, which remains the most common practice. It has also grown to inclu ...
to "prevent the squeaking of boots and shoes". A skate that she invented, which did not have straps, was reported in ''The Emporia News'' in 1868. In 1864, Eunice developed a new cylinder-type of paper-making machine. The ''Daily Evening Star'' reported that the machine allowed better quality wrapping and printing paper to be manufactured at less cost. A company from Fitchburg, Massachusetts, which used the machine reported that it saved them $157 () per day in raw materials.


Death

Foote died on September 29 or 30, 1888, at Lenox, Massachusetts. She was buried in Green-Wood Cemetery in Brooklyn, New York.


Rediscovery


Background

Biases against crediting women scientists for their work led to a lack of documentation about her contributions and scientific achievements, and Foote fell into obscurity. Scientists and journalists generally concur that occurred because she was a woman, because she was an amateur scientist, and because at the time American scientists were not respected as much as Europeans. Her failure to name the specific works of the scientists that had influenced her marked Foote as an amateur. American researchers were recognized in her era for natural history, but physics was still a developing field and few American physicists had an international reputation. Tyndall became the person most often credited with the discovery of the greenhouse effect. Some writers credit the greenhouse effect to Svante Arrhenius, the Swedish Nobel laureate in chemistry, who used physical chemistry to calculate how increases in the amount of atmospheric carbon dioxide can cause the Earth to warm and proved that human interaction with the environment was a direct cause of climate change. In 1902, Susan B. Anthony made a speech calling on younger feminists to take up the reins from founders of the movement like "Elizabeth Cady Stanton, Lucretia Mott, Eunice Newton Foote, Mary Livermore, and
Isabella Beecher Hooker Isabella Beecher Hooker (February 22, 1822 – January 25, 1907) was a leader, lecturer and social activist in the American suffragist movement. Early life Isabella Holmes Beecher was born in Litchfield, Connecticut, the fifth child and secon ...
". Institutionalized neglect of women's history and distortion of the historical record by historians who did not analyze or include women's experiences led to little being known about early feminists. Before 1960 only thirteen texts published in the United States dealt with women's history. Of those, five focused on colonial women and three focused on
Antebellum South In History of the Southern United States, the history of the Southern United States, the Antebellum Period (from la, ante bellum, lit=Status quo ante bellum, before the war) spanned the Treaty of Ghent, end of the War of 1812 to the start of ...
ern women. Women's Liberation activists began making demands for increased representation of women in academia in the late 1960s. They wanted research into women's history to be expanded and groups such as people of color and other marginalized communities to be part of the historic record. In 1969, these activists formed the Coordinating Committee on Women in the Historical Profession as an affiliate of the American Historical Association, hoping to address historical omissions and eliminate discrimination and recruiting problems in the profession of historians. The push for the inclusion of women as both historical subjects and a field of study for academics resulted in the first university women's studies program being launched in the United States in 1970. The first texts specifically written about the first-wave feminists were written after 1975.


Recovery

Women scholars began recovering Foote's role as a nineteenth-century scientist in the 1970s. In 1976, historian Sally Gregory Kohlstedt noted Foote's participation as the only woman at the 1857 meeting of the AAAS in her history of that organization. Kohlstedt also noted both Elisha's membership in the AAAS from 1856 to 1860, and Eunice's presentation of papers as a non-member. Deborah Jean Warner mentioned Foote's articles, and her participation in the 1856 and 1857 AAAS conferences, in her article "Science Education for Women in Antebellum America" published in 1978 in the journal '' Isis''. Lois Barber Arnold, who taught in the Science Education Department of the Teachers College, Columbia University, described Foote's experiments and participation in the AAAS conferences in detail in 1984, but noted that biographical data on her was lacking.
Elizabeth Wagner Reed Elizabeth Wagner Reed (August 27, 1912 – July 14, 1996) was an American geneticist and one of the first scientists to work on '' Drosophila'' speciation. She taught women's studies courses and had a particular interest in research aimed at r ...
, a geneticist and scholar who studied biases against women in science, included a chapter "Eunice Newton Foote: 1819–1888" in her 1992 book ''American Women in Science before the Civil War''. After the advent of the internet and digitization, renewed interest in Foote was sparked by an article published by retired petroleum geologist Ray Sorenson, in January 2011, in the American Association of Petroleum Geologists' on-line journal ''Search and Discovery''. Katharine Hayhoe, director of the Climate Science Center at Texas Tech University, came across Foote's work when trying to answer a colleague, Patricia Solís', question about the lack of women in early climate research. She published an article "John v Eunice — A Fascinating Tale of Early Climate Science, Women's Rights and Accidental Poisoning" on Facebook in 2016. Leila McNeill, joint editor-in-chief of the magazine ''Lady Science'', published an article in the '' Smithsonian Magazine'' in December of that year, after discussing Foote with Sorenson. Around the same time, the physicist John Perlin, who according to Nick Welsh, the executive editor of the ''
Santa Barbara Independent The ''Santa Barbara Independent'' is a news, arts, and alternative newspaper published every Thursday in Santa Barbara, California, United States. History The weekly paper was founded in November 1986, the result of a merger between ''The Santa ...
'', is an author of two definitive histories on
solar energy Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture. It is an essenti ...
, took note of Foote and began to research her history. By 2019, and because it was the 200th anniversary of Foote's birth, both academics and journalists from many parts of the globe had begun to regularly write about Foote and the sexism and biases in the scientific community, which caused women, and particularly women scientists, to go unrecognized.


Evaluating Foote's experiments

Roland Jackson, a visiting scholar at the London-based
Royal Institution The Royal Institution of Great Britain (often the Royal Institution, Ri or RI) is an organisation for scientific education and research, based in the City of Westminster. It was founded in 1799 by the leading British scientists of the age, inc ...
, set out in 2019 to analyze the questions of priority of Foote's work, as had Hayhoe in 2016. According to Jackson and Hayhoe, Foote's simple apparatus could not distinguish between the effects of energy emitted from the sun and infrared energy radiated by the Earth. Because Tyndall had more sophisticated equipment, Hayhoe noted that he was able to make these distinctions and conclusively measure the "heat-trapping properties" of several gases, by differentiating their infrared energy and the ability of molecules to absorb or emit radiation. Jackson acknowledged that it was possible that Foote did not "recognize, the distinction between solar radiation and radiated heat from the earth". Ralph Lorenz evaluated Foote's work in a modern planetary climate context and noted that the near-infrared (0.8 to 3
μm The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...
) radiation absorption reported by Foote is effectively an antigreenhouse effect because it primarily involves solar radiation absorption rather than absorption and re-radiation of terrestrial longwave ('thermal') infrared radiation. An analysis of both of Foote's papers was published online in 2020 by Joseph D. Ortiz, a geology professor at Kent State University, and Jackson. Their printed findings in 2022 contain a description of Foote's methodology. They pointed out that although she did not cite specific works by other scientists, she referenced de Saussure, Alexander von Humboldt, and Edward Sabine. (Reed had previously noted that Foote had also referenced Henri Becquerel, Jean-Baptiste Biot, and Joseph Louis Gay-Lussac.) They also noted that Foote "did not measure the natural greenhouse effect of the earth's atmosphere", but rather studied the heating of gases inside glass vessels. The walls of these vessels would have blocked longwave infrared radiation from either entering or leaving, while allowing some heat to escape via conduction. Accordingly, her results did not directly indicate how the greenhouse effect operates in a natural atmosphere, but they did provide quantitative information about how gases, including greenhouse gases, absorb and radiate heat. Ortiz and Jackson's analysis traced the derivation of Foote's ideas and explored how she constructed, carried out, and interpreted her experiments. They found that she conducted her experiments using a control and a test vessel, which were made as similarly as possible. Her experimental design repeated pairing so that she could measure changes between full sun and shadow, vacuumed and condensed air, damp and dry air, and ambient atmosphere and for each vessel. Although she did not attempt to answer how or why heating occurred, her results confirmed the questions she sought to answer: "Does the concentration of gas in the atmosphere affect its warming response to the Sun's rays?; Does the composition of the gas in the atmosphere affect its warming response to the Sun's rays?; and Can the effect of different gases on the warming response of the Sun’s rays be ranked?"


Analysis of Foote's pioneering role in climate science

Reed's chapter gave biographical details on Eunice and her family and presented a detailed analysis of her scientific work. She recognized that Foote's experiments confirmed that when subjected to sunlight, carbon dioxide became warmer than air "thereby demonstrating what we call the greenhouse effect today". In 2010, when Sorenson came across a summary of Foote's work in an 1857 volume of ''The Annual of Scientific Discovery'', he was unaware that the full paper had been published. He also did not know how much of what publisher
David Ames Wells David Ames Wells (June 17, 1828 – November 5, 1898) was an American engineer, textbook author, economist and advocate of low tariffs. Born in Springfield, Massachusetts, he graduated from Williams College in 1847. In 1848 he joined the staff ...
wrote in the summary was "attributable to oote. Sorenson recognized that Foote's work had preceded Tyndall's in making the connection between carbon dioxide and climate change, but believed her lack of recognition for the discovery was that her work had merely been an oral presentation. He published an update to his initial findings on Foote in 2018, and reported "an examination of the ''American Journal of Science and Arts'' (AJS) was conducted, and the original paper
y Foote Y, or y, is the twenty-fifth and penultimate letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. According to some authorities, it is the sixth (or seven ...
was found in the November 1856 issue"…"The published AJS paper clearly shows that the idea of climate warming due to rising levels of atmospheric originated with Eunice Foote." Jackson's work in 2019 confirmed that Foote's experiments showing that water vapor and absorb heat occurred three years before Tyndall made a similar claim. He also validated that her observation that differences in atmospheric levels of water vapor and would result in climate change preceded Tyndall's claim by five years. Lorenz reported in 2019 in his work ''Exploring Planetary Climate'' that Foote had made her discoveries proving that moist air produced more warming than dry air, and that variances in air density impacted warming, prior to Tyndall. Perlin concurred, describing Foote as "the Rosa Parks of science, … the first woman to have a paper read at a major scientific meeting… first woman to have a paper published in the proceedings of a major scientific meeting… ndthe only woman to be published in serious physics journals until Madame Curie". Ortiz and Jackson concluded that Foote was the first to demonstrate absorption of heat by carbon dioxide and water vapor, but she did not isolate or detect the absorption and emission of radiant energy within the thermal infrared range, which causes the greenhouse effect.


Debate on whether Tyndall knew of Foote's work

The rediscovery of Foote also sparked academic debate on whether Tyndall knew of her work. Hayhoe's position in 2018 was that there was inadequate information to make a determination. Perlin strongly believed that Tyndall did know, because one of his papers was published in the 1856 ''American Journal of Science'' along with Foote's. Jackson, who also wrote a biography of Tyndall, believes that Tyndall probably never knew of Foote. He acknowledges the possibility that Tyndall could have known, as he was one of the editors of the ''Philosophical Magazine'' and could have been involved in the selection of the articles it chose to publish. Jackson also notes that many European scientists, including George Stokes and William Thomson, were unaware of Foote's work since her name is not mentioned in any of the "correspondence, journals, or published papers of the critical physicists" of her era. Perlin countered Jackson's view because in an earlier incident, Tyndall had not credited precedent work by Henry and Tyndall was known to have little regard for women's intellectual capacity. Jeff Hecht, a science and technology writer, acknowledged that the reasons why Tyndall did not credit Foote remain unknown but that he "…might have ignored a discovery claimed by a woman". Like Perlin, Hecht pointed out that Tyndall "…failed to credit discoveries by men like Colladon, and quarreled over priority with some other prominent scientists of his time". Jackson rebutted that Tyndall had only limited interest in climate and after 1861, never published again on the subject as his interest was in studying the effect of radiation upon molecules. Jackson stated that it was scientists who gave Tyndall the title of "founder of climate science" and not a title that Tyndall had claimed for himself.


Legacy and recognition

In May 2018, a
symposium In ancient Greece, the symposium ( grc-gre, συμπόσιον ''symposion'' or ''symposio'', from συμπίνειν ''sympinein'', "to drink together") was a part of a banquet that took place after the meal, when drinking for pleasure was acc ...
on Foote's work, ''Science Knows No Gender: In Search of Eunice Foote Who 162 Years Ago Discovered the Principal Cause of Global Warming'' was held at the University of California, Santa Barbara. The main presenter at the symposium, the first conference specifically organized to honor Foote, was Perlin. A short-film about Foote's life, ''Eunice'', was produced in 2018 by Eric Garro and Paul Bancilhon. That year, Cornell University Press released a textbook ''Communicating Climate Change: A Guide for Educators'' confirming that Foote's work preceded that of Tyndall. The
University of California, Santa Barbara Library The University of California, Santa Barbara Library is the university library system of the University of California, Santa Barbara in Santa Barbara, California. The Library includes four facilities: Two libraries (the Main Library (Davidson Li ...
opened a seven-month exhibit in November 2019, ''From Eunice Foote to UCSB: A Story of Women, Science, and Climate Change'', to honor Foote's work and legacy. Foote's work is now recognized as the earliest known scientific research to demonstrate the existence of
greenhouse gas A greenhouse gas (GHG or GhG) is a gas that Absorption (electromagnetic radiation), absorbs and Emission (electromagnetic radiation), emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse ...
es and their potential to effect changes in climate. The publication of her paper in the 1856 edition of the ''American Journal of Science and Arts'' is acknowledged as the first known publication in a scientific journal on physics by a woman. The publication of her 1857 paper in that year's ''Proceedings of the American Association for the Advancement of Science'' is acknowledged as the first time an American woman's work had been published in the journal. The American Geophysical Union instituted The Eunice Newton Foote Medal for Earth-Life Science in 2022 to recognize exceptional scientific achievements in research which focuses on the convergence of Earth and life science.


Published works

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See also

* History of climate change science *
Women in climate change The contributions of women in climate change have received increasing attention in the early 21st century. Feedback from women and the issues faced by women have been described as "imperative" by the United Nations and "critical" by the Populatio ...
* Matilda effect - a bias against acknowledging the achievements of women scientists


Notes


References


Citations


Bibliography

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External links


"A forgotten founder of climate science: Eunice Newton Foote"
40-minute BBC World podcast, September 2022
"Eunice Foote: A Once Forgotten Climate Science Pioneer"
Initial Conditions podcast, April 2022 {{DEFAULTSORT:Foote, Eunice Newton 1819 births 1888 deaths American women's rights activists Women inventors 19th-century American inventors People from Seneca Falls, New York Activists from New York (state) People from Goshen, Connecticut People from Saratoga, New York Foote family Burials at Green-Wood Cemetery Scientists from Connecticut Scientists from New York (state) Emma Willard School alumni Women climatologists American women activists 19th-century American women scientists American climatologists