Welcome to Y. S. Kim's Home Page!

Further contents of Einstein's

  • 100 years ago, Bohr and Einstein met occasionally to discuss physics. Bohr was worrying about why the hydrogen energy levels are discrete. Einstein was interested in how things look to moving observers. Did they ever talk about how the hydrogen atom would look to moving observers?

  • Since they never talked about this problem,

    1. the problem does not exist, and it is useless to talk about it,


    2. they left this problem to us as a homework. I am not the first one to start working on this problem. Click here for those who attempted to resolve this issue in the past.

  • We can summarize this homework in the following table. I am primarily responsible for the blue arrows given there.

  • Click here for detailed explanation.
    This table leads to the following philosophical question. Indeed, physics is an art of Hegelian synthesis.

  • This is my main business in physics. Click here for my latest papers.
  • Click here for the organization of my research.

University of Maryland since 1962

  • John S. Toll was John A. Wheeler's student at Princeton and came to the University of Maryland in 1953 to build the physics department.

        I am the youngest person in this faculty photo of 1963. Click here for a full image of this photo.

        John Toll used to become very happy whenever I invited Eugene Wigner to Maryland. This photo was taken at the Chancellor's mansion in 1986.

    1. He served as the chairman of department until 1965. He hired me as an assistant professor in 1962, and I worked for him until 1965 when he went to Stony Brook as the university president.

      On the door of the chairman's office, he had a sign saying

      For administrative matters, make appointments with my secretary.
      For physics matters, come right in.

      We need more people like John S. Toll in physics. Is physics above money or money above physics? Click here.

    2. In 1978, Toll came back to Maryland as the chancellor of the State university System, and he became very happy whenever I invited Eugene Wigner to Maryland. Here is my photo with Toll and Wigner.

    3. The best thing Toll did for me was to assign me as Dirac's servant when he visited Maryland in 1962. Click here for a story. He was always on my side whenever I had difficult times with my colleagues. In spite of his busy schedule at the Chancellor's office, he used to come to my seminars. I am very proud to say that I am Johnny Toll's boy.

  • My teachers and friends in physics.

Research Interests

Extracurricular Activities

More about myself

  • My photo-biography.

  • Not afraid of being different from others.

  • Korean background. I spend my first 19 years in Korea. I came to the United States in 1954 with a student visa. I was a high school student during the Korean War (1950-53).

  • I am a freedom-loving boy, and I enjoy talking/listening to everybody in the world. Please e-mail me at yskim@umd.edu if you have brilliant ideas.

  • copyright@2022 by Y. S. Kim, unless otherwise specified.