37 moments
Childhood in Kyoto
· Kyoto, Japan

Wikimedia Commons · All rights reserved. Yukawa grew up in Kyoto after his father became a professor at Kyoto Imperial University. The source supports childhood residence but not a precise year of relocation or address.
Birth in Tokyo
· Tokyo, Japan

Wikimedia Commons · All rights reserved. Hideki Ogawa, later Hideki Yukawa, was born in Tokyo. Tokyo representative coordinate; the source does not identify a birth building.
Graduation from Kyoto Imperial University
· Kyoto Imperial University, Kyoto, Japan

Wikimedia Commons · All rights reserved. Yukawa completed his undergraduate education at Kyoto Imperial University.
Lecturer at Kyoto Imperial University
· Kyoto Imperial University, Kyoto, Japan

Wikimedia Commons · All rights reserved. Yukawa began his period as a lecturer at Kyoto Imperial University, where he remained through 1939. The card date marks the beginning of the documented 1932–1939 appointment.
Physics appointment at Osaka Imperial University
· School of Science, Osaka Imperial University, Nakanoshima, Osaka, Japan

Wikimedia Commons · All rights reserved. Yukawa became lecturer and assistant professor of physics at Osaka Imperial University, the setting for his early meson-theory work. Coordinates represent the former Nakanoshima School of Science site.
Doctorate at Osaka Imperial University
· Osaka Imperial University, Nakanoshima, Osaka, Japan

Wikimedia Commons · All rights reserved. Yukawa received his doctoral degree from Osaka Imperial University for work on mesons and nuclear forces. Coordinates represent the former Nakanoshima campus.
Departure from San Francisco
· Port of San Francisco, San Francisco, California, United States

Wikimedia Commons · All rights reserved. Yukawa boarded the Kamakura Maru at San Francisco for his return to Japan. The source does not give a precise departure date; coordinates represent the historic waterfront.
Disembarkation in New York
· Port of New York, New York City, New York, United States

Wikimedia Commons · All rights reserved. Yukawa left the Yasukuni Maru when it called at New York and began a month-long stay in the United States. The source does not supply the date beyond the 1939 voyage; coordinates represent Lower Manhattan waterfront.
Visit to Princeton University
· Princeton University, Princeton, New Jersey, United States

Wikimedia Commons · All rights reserved. During his month in the United States, Yukawa traveled by train to Princeton University to meet Albert Einstein. The source places this visit during the 1939 American stay but does not give a day or month.
Professor at Kyoto Imperial University
· Kyoto Imperial University, Kyoto, Japan

Wikimedia Commons · All rights reserved. Yukawa took up a professorship at Kyoto Imperial University, succeeding his former mentor Kajuro Tamaki.
Departure from Kobe for first overseas journey
· Port of Kobe, Kobe, Japan

Wikimedia Commons · All rights reserved. Yukawa departed Kobe by the Yasukuni Maru for the planned Solvay Conference, beginning his first overseas trip. The source gives only late June.
Arrival at Naples
· Port of Naples, Naples, Italy

Wikimedia Commons · All rights reserved. En route to the postponed Solvay Conference, Yukawa arrived at Naples in early August. The source gives only early August; coordinates represent the harbor.
Boarding at Hamburg
· Port of Hamburg, Hamburg, Germany

Wikimedia Commons · All rights reserved. After the Solvay Conference was postponed because of the war outbreak, Yukawa boarded the waiting Yasukuni Maru at Hamburg. Coordinates represent the historic central port area.
Return to Yokohama
· Port of Yokohama, Yokohama, Japan

Wikimedia Commons · All rights reserved. Yukawa completed his first overseas journey when the Kamakura Maru arrived at Yokohama. The surrounding account establishes October 1939; coordinates represent Yokohama harbor.
Two-meson-theory hike at Todai-ji
· Sangatsu-do Hall, Todai-ji Temple, Nara, Japan

Wikimedia Commons · All rights reserved. Yukawa joined colleagues for a research discussion during a picnic at Todai-ji Temple’s Sangatsu-do Hall in Nara. The source identifies May 1942 but not a day.
Lecture at Osaka Senior High School
· Osaka Senior High School, Osaka, Japan

Wikimedia Commons · All rights reserved. Yukawa delivered a lecture at Osaka Senior High School during the Second World War. Coordinates are a representative point for the former Osaka Senior High School area.
Institute for Advanced Study membership
· Institute for Advanced Study, Princeton, New Jersey, United States

Wikimedia Commons · All rights reserved. Yukawa began a visiting period at the Institute for Advanced Study in Princeton. The card date marks the beginning of the documented September 1948–June 1949 residence.
Visit to Berkeley
· University of California, Berkeley, Berkeley, California, United States

Wikimedia Commons · All rights reserved. On arriving in the United States for an Institute for Advanced Study appointment, Yukawa visited Berkeley and met Enrico Fermi and other physicists. The source identifies September 1948 but not a day.
Visiting Albert Einstein in Princeton
· Princeton, New Jersey, United States

Wikimedia Commons · All rights reserved. Yukawa and his family visited Albert Einstein in Princeton during Yukawa’s American period. The photograph is dated around 1949; the exact house is not identified.
Visiting professorship at Columbia University
· Columbia University, New York City, New York, United States

Wikimedia Commons · All rights reserved. Yukawa served as a visiting professor at Columbia University in New York from 1949 until returning to Japan in 1953. The card date marks the beginning of the documented 1949–1953 appointment.
At Kyoto University
· Kyoto University, Kyoto, Japan

Wikimedia Commons · All rights reserved. A 1950 photograph documents Yukawa at Kyoto University with colleagues including Shin-ichiro Tomonaga and Shoichi Sakata. The source does not provide a more precise date.
Visit to the University of Osaka
· University of Osaka, Toyonaka, Osaka, Japan

Wikimedia Commons · All rights reserved. Yukawa was photographed at the University of Osaka in 1950. The source does not specify a campus or exact date.
Meeting with Yoshio Nishina in Hakone
· Hakone, Kanagawa, Japan

Wikimedia Commons · All rights reserved. Yukawa met Yoshio Nishina in Hakone in August 1950. Coordinates represent central Hakone; the specific venue is not identified.
Third Rochester Conference
· University of Rochester, Rochester, New York, United States

Wikimedia Commons · All rights reserved. Yukawa attended the Third Rochester Conference, where he was photographed with Robert Marshak. Coordinates represent the University of Rochester; the source identifies the conference but not its precise venue.
Director of Kyoto research institute
· Research Institute for Fundamental Physics, Kyoto University, Kyoto, Japan

Wikimedia Commons · All rights reserved. After returning from the United States, Yukawa became the first director of Kyoto University’s Research Institute for Fundamental Physics. The source uses “Institute for Basic Physics”; this refers to the Kyoto University institute later known as the Research Institute for Fundamental Physics.
Lindau Nobel Laureate Meeting lecture
· Lindau, Bavaria, Germany

Wikimedia Commons · All rights reserved. Yukawa delivered his lecture, “Attempt at a Unified Theory of Elementary Particles,” at the Third Lindau Nobel Laureate Meeting. The meeting page states that the meeting was in Lindau and lists Yukawa’s lecture on 2 July 1953.
Visit to Kochi for statue unveiling
· Kochi, Kochi Prefecture, Japan

Wikimedia Commons · CC BY-SA 4.0 · file Yukawa visited Kochi to attend the unveiling ceremony for the first statue built in his honor in Japan. The source identifies Kochi but the precise ceremony site is not specified in the quoted text.
Lindau lecture on elementary particles
· Lindau, Bavaria, Germany

Wikimedia Commons · All rights reserved. Yukawa delivered an “Elementary Particles” lecture at the Sixth Lindau Nobel Laureate Meeting.
First Pugwash Conference
· Pugwash, Nova Scotia, Canada

Wikimedia Commons · All rights reserved. Yukawa participated in the First Pugwash Conference, joining its committee on the control of nuclear weapons. The source states that Yukawa was among the three Japanese physicists participating in this conference; coordinates represent Pugwash village.
Second Geneva Atoms for Peace conference
· Palais des Nations, Geneva, Switzerland

Wikimedia Commons · Public domain · file Yukawa participated as a Japanese government representative in the Second United Nations International Conference on the Peaceful Uses of Atomic Energy. The source supports presence from 1–13 September; the card date marks the opening day.
Third Pugwash Conference at Kitzbühel
· Kitzbühel, Tyrol, Austria

Wikimedia Commons · Public domain · file After the Geneva conference, Yukawa went to Austria and participated in the Third Pugwash Conference beginning at Kitzbühel. The conference began in Kitzbühel on 14 September and continued in Vienna; coordinates represent Kitzbühel.
Third Pugwash Conference in Vienna
· Vienna, Austria

Wikimedia Commons · Public domain · file Yukawa’s Third Pugwash Conference itinerary continued from Kitzbühel to Vienna. Yukawa’s participation in the Third Pugwash Conference is documented by Pugwash Japan; this source fixes the Vienna session date.
Ninth Pugwash Conference at Cambridge
· Cambridge, England, United Kingdom

Wikimedia Commons · All rights reserved. Yukawa participated in the Ninth Pugwash Conference on disarmament and world security at Cambridge. Conference dates of 25–30 August 1962 are supported by the published conference record; the card date marks the opening day.
Tenth Pugwash Conference in London
· London, England, United Kingdom

Wikimedia Commons · All rights reserved. Yukawa participated in the Tenth Pugwash Conference in London following the Cambridge meeting. The Kyoto University archive lists the Tenth Conference as 3–7 September 1962; the card date marks the opening day.
Kyoto Conference of Scientists at Takehara
· Sasaki Hotel, Takehara, Hiroshima Prefecture, Japan

Wikimedia Commons · All rights reserved. Yukawa attended the Kyoto Conference of Scientists at the Sasaki Hotel in Takehara, a meeting concerning international affairs and scientists’ social responsibility. The archival clipping identifies Yukawa and the location but the extracted text does not preserve the article’s calendar date.
Lindau lecture on space-time and matter
· Lindau, Bavaria, Germany

Wikimedia Commons · CC BY 4.0 · file Yukawa gave the lecture “Space-Time Description and Matter” at the Fifteenth Lindau Nobel Laureate Meeting.
Death at home in Sakyo-ku
· Sakyo-ku, Kyoto, Japan

Wikimedia Commons · Public domain · file Yukawa died at his home in Sakyo-ku, Kyoto, after years of increasing infirmity. Coordinates represent Sakyo-ku; the home address is not given.