John S. Wahl was an American physicist.
Wahl’s specialty was nuclear physics. He worked for Dr. Elizabeth Graves. He and his wife, Mary Wahl, were married in 1943.
The Wahl family moved to Connecticut in the mid-1950s. John had a long career at Schlumberger. He applied nuclear physics to geophysical measurement, and he helped develop several tools for oil surveying. He passed away in 1982.