Seliger graduated from
Townsend Harris High School in 1939 and from the
City College of New York in 1943). After serving in the U.S. Air Force from 1943 to 1946, he studied physics at
Purdue University and graduated there with M.S. in 1948. From 1948 to 1958 he was a senior physicist in the Radioactivity Division of the
National Bureau of Standards (NBS) and was enrolled part-time at the
University of Maryland. He graduated there with Ph.D. in 1954. At the NBS he developed a highly sensitive method of measurement of photons produced by radioactive emissions. He was elected a Fellow of the American Physical Society in 1958. With the aid of a recommendation by
W. F. Libby, Seliger became a Guggenheim Fellow for the academic year 1958–1959, which he spent in the biology department of Johns Hopkins University. There he worked with
William D. McElroy, who had recently isolated the enzyme
luciferase. Seliger used his measurement techniques for photon scintillation to make the first measurement of the quantum yield of the firefly light reaction. This was the beginning of his outstanding achievements in the study of bioluminescence in fireflies, bacteria,
phytoplankton, fish, and
ctenophores. Seliger, as part of a team of Johns Hopkins scientists, studied more than 100 different species of fireflies in Maryland and on the island of Jamaica. He built an instrument, called by him a "firefly gun," He was married for 69 years to the former Beatrice Semel (born in 1926). Upon his death at the age of 88, he was survived by his widow, two daughters, two grandsons, and a great-grandson. ==Selected publications==