Basil Hiley obituary

Basil Hiley worked closely with the American theoretical physicist David Bohm, with whom he wrote an influential book Photograph: none

My father, Basil Hiley, who has died aged 89, was a theoretical physicist who was particularly renowned for his research collaborations with the American David Bohm, working with him on the foundations of quantum mechanics.

Together they published many articles emphasising the wholeness of the quantum process and on the concept of Bohm’s “implicate order”, which proposes a deeper, underlying reality where everything is interconnected and enfolded, contrasting with the “explicate order” of our everyday, unfolded world.