Joan Feynman

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Joan Feynman
auroras, solar wind
AwardsNASA Exceptional Achievement Medal
Scientific career
FieldsAstrophysics
InstitutionsNational Center for Atmospheric Research, National Science Foundation, Boston College, Jet Propulsion Laboratory
ThesisInfrared lattice absorption in crystals of diamond structure (1958)
Doctoral advisorMelvin Lax

Joan Feynman (March 31, 1927 – July 21, 2020) was an American

auroras. She was also known for creating a model that predicts the number of high-energy particles likely to hit a spacecraft over its lifetime, and for uncovering a method for predicting sunspot cycles.[4]

Early life

Feynman was raised in the Far Rockaway section of Queens, New York City, along with her elder brother, Richard Feynman (who became a Nobel Prize-winning physicist).[4] Her parents were Lucille Feynman (née Phillips), a homemaker, and Melville Arthur Feynman, a businessman. Her parents, both Ashkenazi Jews, originated from Minsk, Belarus (then in Russian Empire) and Poland.[1][5]

Joan was an inquisitive child, and she exhibited an interest in understanding the natural world from an early age. However, her mother and grandmother both dissuaded her from pursuing science, since they believed that women's brains were not physically capable of understanding complex scientific concepts in the way that men's brains could.[4][6][7] Despite this, her brother Richard always encouraged her to be curious about the universe. It was he who originally introduced young Joan to auroras when, one night, he coaxed her out of bed to witness the northern lights flickering above an empty golf course near their home.[6][8][9] Later, Feynman found comfort in an astronomy book given to her by her brother. She became convinced that she could, in fact, study science, when she came across a graph based on research by astronomer Cecilia Payne-Gaposchkin.[4]

Education

In 1948 Feynman earned a bachelor's degree in physics from

solid state theory in the physics department under Melvin Lax.[11] During her graduate years, Feynman took a year off to live with her husband in Guatemala, where they studied the anthropology of the Maya peoples who lived there.[12] She was a co-author, along with her husband and Betty J. Meggers, of a 1957 paper on anthropology.[13] Feynman eventually earned her doctorate in physics in 1958.[2][14] Her thesis was on the "absorption of infrared radiation in crystals of diamond-type lattice structure".[7][15] She also completed postdoctoral work at Columbia University's Lamont Geological Observatory.[3]

Career

An aurora display over Calgary

Joan Feynman spent the bulk of her career studying the interactions between the

NASA Ames Research Center in 1971, Feynman discovered that the periodic spouting of solar material known as a solar coronal mass ejection (CME) could be identified by the presence of helium in the solar wind.[4]
This was an important find because, although CME's were known at the time, they had until then been difficult to detect.

Joan Feynman

After her time at NASA Ames, Feynman moved on to research posts with the High Altitude Observatory; the National Center for Atmospheric Research in Boulder, Colorado; the National Science Foundation in Washington, DC; and Boston College in Massachusetts.[11] In 1985 Feynman accepted a position at the Jet Propulsion Laboratory in Pasadena, California,[16] where she remained until her retirement.

Feynman made a critical discovery about the nature and cause of

auroras. Using data collected by NASA spacecraft Explorer 33, she demonstrated that the occurrence of auroras is a product of the interaction between the Earth's magnetosphere and the magnetic field of the solar wind.[4][9][17]

Feynman helped to develop a model for estimating the environmental hazards of the local

space flight activities. Feynman's model ultimately helped engineers determine the flux of high-energy particles that would affect a spacecraft over its functional lifetime. Her work in this area led to important new developments in spacecraft design.[4][18]

Later in her career, Feynman studied

Nile River. During periods of high solar activity, conditions around the Nile were found to be drier, and when solar activity was low, conditions were wetter.[19][9]

In 1974, Feynman became the first woman to be elected as an officer of the American Geophysical Union (AGU). She organized an AGU committee charged with advancing the fair treatment of women within the geophysics community.[4] Feynman was a long-standing member of the International Astronomical Union. She was a member of a number of the IAU's subdivisions, including Division E Sun and Heliosphere, Division G Stars and Stellar Physics, and Division E Commission 49 Interplanetary Plasma & Heliosphere.[20]

Feynman retired from the Jet Propulsion Laboratory as a senior scientist in 2003. However, she continued to work, publishing in 2009 on the influence of solar activity on the climate of the first millennium.[21][19][22]

During her career, Feynman was an author or co-author of more than 100 scientific publications. She also edited three scientific books.[11]

Awards and honors

Feynman was twice elected secretary of the Solar and Interplanetary Physics Section of the American Geophysical Union.[11]

In 2002, Feynman was named as one of the Jet Propulsion Laboratory's elite senior research scientists.[16]

In 2000, she was awarded NASA's Exceptional Achievement Medal.[23]

Personal life

Feynman had one daughter, Susan Hirshberg, and two sons, Charles Hirshberg and Matt Hirshberg, from her first marriage, to anthropologist Richard Irwin Hirshberg (born 1924). Feynman met Hirshberg at Oberlin College, and they married in 1948,[4][24] separated in 1974, and later divorced.[25] Feynman was married to fellow astrophysicist Alexander Ruzmaikin from 1987 until her death.[11]

She died on July 21, 2020, at age 93.[2][3][21]

References

  1. ^ a b "1940 United States Federal Census – Joan Feynman". Retrieved 1 April 2013.
  2. ^ a b c d Dyer, Brandon (November 19, 2020). "Late Alumna Helped Advance Satellite Technology, Understanding of the Sun, Women in Science". SU News. Retrieved 19 November 2020.
  3. ^ a b c Poffenberger, Leah (10 August 2020). "Joan Feynman 1927–2020". American Physical Society. APS News. Retrieved 14 August 2020.
  4. ^ a b c d e f g h i Hirshberg, Charles (2002-04-18). "My Mother, the Scientist". Popular Science. Bonnier Corporation. Archived from the original on 2015-09-28. Retrieved 2013-11-30.
  5. ^ O'Connor, J J; Robertson, E F (August 2002). "Biography – Richard Feynman". School of Mathematics and Statistics, University of St Andrews, Scotland.
  6. ^
    ISBN 978-1-59643-259-8
    .
  7. ^
    ISBN 978-0393313932
    .
  8. ^ Feynman, Joan (9 April 2012). The Aurora. YouTube (51" video). Archived from the original on 2015-05-26. Retrieved 2013-03-31.{{cite AV media}}: CS1 maint: bot: original URL status unknown (link)
  9. ^ a b c "Getting to know the Sun – Joan Feynman died on July 22nd (obituary)". The Economist. 17 September 2020.
  10. S2CID 243018756
    .
  11. ^ a b c d e f Feynman, Joan (September 2007). "Physics Matters at Syracuse University: Volume 2, September 2007; CORRESPONDENCE FROM ALUMNI, Joan Feynman, PhD '58" (PDF). Archived from the original (PDF) on 11 May 2012. Retrieved 30 March 2013.
  12. ^
    University of California at Santa Barbara
    . Retrieved 31 March 2013.
  13. ISBN 978-1-315-41792-9
    .
  14. ^ Riley, Christopher (2015). "Joan Feynman: From auroras to anthropology". In Charman-Anderson, Suw (ed.). A Passion For Science: Tales of Discovery and Invention. FindingAda. Retrieved 5 August 2020.
  15. OCLC 850002464
    . Retrieved 19 November 2020.
  16. ^ a b "Space and Astrophysical Plasmas: People: Joan Feynman". Jet Propulsion Laboratory. Archived from the original on 17 July 2012. Retrieved 5 April 2013.
  17. ^ Crooker, N. U.; Feynman, J.; Gosling, J. T. (1977-05-01). "On the high correlation between long-term averages of solar wind speed and geomagnetic activity". NASA.
  18. ^
    hdl:2014/15728
    .
  19. ^ a b "NASA Finds Sun-Climate Connection in Old Nile Records". NASA Jet Propulsion Laboratory. 2007-03-19. Retrieved 31 March 2013.
  20. ^ "Joan Feynman | IAU". Retrieved 31 March 2013.
  21. ^ a b Katharine Q. “Kit” Seelye (2020-09-10). "Joan Feynman, Who Shined Light on the Aurora Borealis, Dies at 93". The New York Times. Retrieved 2020-09-13.
  22. doi:10.1142/S1793536909000266
    .
  23. ^ "My work and career: The NASA Exceptional Scientific Achievement Medal".
  24. Brooklyn Daily Eagle
    , May 2, 1948.
  25. ^ Seelye, Katharine Q. (September 10, 2020). "Joan Feynman, Who Shined Light on the Aurora Borealis, Dies at 93". NY Times.

External links

List of Physicists

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