Welcome to Y. S. Kim's Home Page!
- Young Suh Kim
Department of Physics
University of Maryland
College Park, MD 20742, U.S.A.
Sixty Years Since 1962
Physics faculty photo of Spring 1963 (during my first year at the University).
I am the youngest person in this photo.
- In 1962, I came to the Greater Washington area to become an assistant professor
of physics at the University of Maryland. The campus is 25 km north of the White House.
In 2007, I became a Professor Emeritus (without teaching duties) and am writing books and
articles. I can travel around the world wihout time restrictions,
and I enjoy meeting interesting people.
Click here for
the photos from the world.
- In 1962, Paul A. M. Dirac (Nobel 1933) visited the University of Maryland
for one week, and I was assigned to be a personal assistant (servant) to him.
I learned his physics
directly from him. I was like Nicodemus meeting Jesus (story from
the Gospel of John in the New Testament). I was born again, and I was able
to develop my own research line
I still follow.
Dashen made this bad calculation in 1965, but he never admitted his
- In 1965, while I was struggling to find out myself, the physics community produced
the genius of the century named Roger Dashen who calculated the mass the neutron-proton
mass difference. He was appointed as a full professor at Princeton's Institute for
Advanced Study (Einstein's place until he died in 1955).
I have my Herod complex, and
become uneasy when I hear someone (other than myself) is a genius. I had to prove
his published papers were wrong, and I published my papers saying so.
Click here for a detailed story.
However, the reaction from the American physics community became hostile to me.
My colleagues and teachers told me
Dashen is a genius, but you are a Korean.
This was a very valid statement in the United States at that time, but
the statement consists of two totally independent comments. The question
is whether the word "Korean" has anything to do with being a genius or
While I was at Princeton (1958-62) as a graduate student and a postdoc,
my friends routinely told me
My only possible response was to remain silent.
- You are an oriental boy. You cannot speak logically.
- Koreans cannot run their own country. The best solution is
to give the country back to Japan.
Not many Americans know the history of that area before the
Pearl Harbor Day of 1941.
- The orientals do not have brains to make nuclear bombs.
It is safe to say that this kind of thinking was the cause of
the present problem with North Korea's nuclear bombs.
In spite of those noises, the United States has been very nice to me.
This country rewards those who work hard with talends, and I worked hard.
What talents? from the Widom of Korea.
Not many people know Dashen was a genius, but I was and still am
a Korean boy. Korea has a long history, and Koreans take genealogy very
seriously. With my Korean background, I constructed and believe in
Indeed, my colleagues in the same department made their best efforts
to find out whether Dashen was right or I was right.
They found out the truth. This is the reason why I still have my
office at the University, and I still publish my articles and books
with the university address.
The United States has been very nice to me.
The fact that Princeton made this tragic misjudgment is known as the
and this incident inflicted a serious damage to Princeton's reputation.
Yet, Princeton, with the prestige established during the Einstein era, kept
producing excitements by producing new words (not necessarily new physics).
The latest word from Princeton was the String Model or String Theory. I do
not know what happened to these string stuff.
- Quantum mechanics of moving bound states.
Click here for detailed explanation.
- Click here for my review
paper published in the J. of Modern Physics (2022).
- As for me, I had to build my own research line. I could not trust Princeton,
but I could not give up my Princeton background which carries Einstein's name.
- While I was at Princeton, Eugene Paul Wigner (Nobel 1963) was totally isolated
from the rest of the department. Yet, I had a great respect for him, and started
studying his 1939 paper on
internal space-time symmetries.
for my Wigner page.
- I had to go back to what I learned from
Dirac (Nobel 1933) in 1962.
for my Dirac page.
Based on these two cornerstones, I was able to develop and expand my own
research line described in
Let me summarize. The United States rewards those who work hard.
I worked hard, and was able to produce this genealogy in physics:
Justified? Click here.
Life in the Greater Washington Area since 1962
- Washington DC is the capital city of the United States. The city of Washington
is geographically within the state of Maryland. The University Maryland is 25 km
north of the White House.
Washington was a sleepy southern town when I came to this area 1962.
Since then the world became different. China became very powerful. Europe
became much richer. The Soviet Union collapsed. The net result is that the
United States became more influential, and Washington became the capital city
of the World.
- One unknown fact is that there are far more scientists than politicians in the
- Politicians are noisy while scientists are quiet.
- Click here
for the photos from this area.
- In 1963, I married a girl I met during my freshman year (1954) in
Korea. In Korea, the school year begins in March, instead of September.
I thus spent one semester at the Engineering College of
Seoul National University before becoming a freshman in September at the
Carnegie Institute of Technology in Pittsburgh.
- In 1969, we bought
our house, 8 km north of the university campus. I used to work at
my university office during evening hours.
Our son's graduation at Princeton Univsersity in 1987.
- In 1983, our son became a freshman at Princeton University. Thus, my
wife was privileged to marry a Princeton man and sent her son to Princeton.
Here is her photo-bio.
- In 2005, my son married a medical doctor, and we now have one grandson and
granddaughter. They also live in the Washington area, and we have family
meetings twice a month.
- In 2007, I retired from my teaching duties at the University of Maryland,
and my wife retired earlier in 2002. We became free to travel around the world.
Click here for our travel
- Clicke here for my collections
of photos from the Washington area.
- Although this area is rich in science and culture,
I have to go to other cities for more culture and excitements.
- It takes only 3 hours to go to New York City by train.
Click here for photos from the New York City.
- The Washington area is served by two international airports, with direct flights
to major cities in Europe. Click here for photos
copyright@2022 by Y. S. Kim, unless otherwise specified.
Einstein-Haus in Bern, Switzerland
The birth place of E = mc2.
I received my PhD degree from Princeton in 1961, seven years after
high school graduation in 1954. This means that I did much of the
ground work for the degree during my high school years covering
the years (1950-53) of the Korean War.
- Click here for my high school diary.
- Click here for my home page.
- Einstein page.
- Princeton page.
- Travel around the World.
- Style page.