Answer: niels

AnswerCrossword Clue
NIELSPhysicist Bohr
NIELSDanish physicist Bohr
NIELSBohr the physicist
NIELSFirst name in physics
NIELSNobelist Bohr
NIELSBohr who advocated sharing atomic secrets
NIELS19th-century Norwegian mathematician Abel
NIELSBohr of the Manhattan Project
NIELSNobel physicist Bohr
NIELSPhysics Nobelist Bohr
NIELSNobelist Finsen
NIELSFarley Granger's role in "Hans Christian Andersen"
NIELSMathematician ... Henrik Abel
NIELSCopenhagen's ... Bohr Institute
NIELSQuantum mechanics pioneer Bohr
NIELS... Arden Oplev, director of "The Girl With the Dragon Tattoo"