Louis Harold Gray Louis Harold Gray /ˈluːɪs ˈhærəld greɪ/

noun

1. English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)  ( Gray , Louis Harold Gray )
   English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)