Atomic and quantum physics

Polykarp Kusch (born 26.01.1911) is an American physicist and a member of the National Academy of Sciences (1956).

Leonid Veniaminovich Keldysh (born 7.04.1931) is a Soviet theoretical physicist and an academician of the USSR Academy of Sciences (1976, corresponding member 1968).

Veniamin Moiseyevich Kelman (born 7.02.1915) is a Soviet experimental physicist and an academician of the Academy of Sciences of the Kazakh SSR (1962).

Isaak Konstantinovich Kikoin (born 28.03.1908) is a Soviet experimental physicist and an academician (1953; corresponding member 1943).

Elpidifor Anempodistovich Kirillov (8.10.1883—27.02.1964) was a Soviet physicist and a Doctor of Physical and Mathematical Sciences.

Oskar Benjamin Klein (15.09.1894-5.02.1977) was a Swedish theoretical physicist and a member of the Royal Swedish Academy of Sciences (1945).

István Kovács (16.12.1913) is a Hungarian physicist and a member of the Hungarian Academy of Sciences (1967).

Anton Panteleimonovich Komar (born 30.05.1904) is a Soviet physicist and an academician of the Academy of Sciences of the Ukrainian SSR (1948).

Arthur William Conway (2.10.1875-11.03.1950) was an Irish physicist and mathematician, a member of the Royal Irish Academy and its president.

Edward Condon (2.07.1902-26.03.1974) was an American physicist and a member of the National Academy of Sciences (1944).

Leon Iosifovich Kordysh (22.07.1878 — 11.07.1932) was a Soviet theoretical physicist.

Walter Kossel (4.01.1888-22.05.1956) was a German experimental physicist.

Hendrik Anthony Kramers (17.12.1894 —24.04.1952) was a Dutch theoretical physicist.

Ralph Kronig (born 10.03.1904) is a Dutch theoretical physicist and a member of the Royal Netherlands Academy of Arts and Sciences.

Ferdinand Kurlbaum (4.10.1857-29.07.1927) was a German experimental physicist.

Lev Davidovich Landau (22.01.1908-1.04.1968) was a Soviet theoretical physicist and an academician (1946).

Alfred Landé (13.12.1888-1975) was a German theoretical physicist.

Paul Langevin (23.01.1872-19.12.1946) was a French physicist and a member of the Paris Academy of Sciences (1934).

Otto Laporte (23.07.1902-28.03.1971) was an American physicist.

Charles Christian Lauritsen (4.04.1892—13.04.1968) was an American physicist and a member of the National Academy of Sciences (1941).