Robert Oppenheimer

The first ground test of a nuclear weapon took place on July 16, 1945, and was code-named "Trinity".

An excerpt from the article 32 facts about Robert Oppenheimer

It took place near the town of Alamagordo, New Mexico. The bomb was given the name "Gadget", and the test was a success. The flash from the explosion was visible in three states.

While most of the scientists working on the test were satisfied with the result, Oppenheimer realized the seriousness of the situation by quoting a phrase from the Bhagavad Gita - the holy book of Hinduism - "Now I am become Death, the destroyer of worlds".