How does physics explain consciousness?

Nature! You with your narrow sight have no idea of the meaning of the term. All your studies have not taught you even the alphabet that Nature uses. 

Learn that alphabet. Begin to study that language. 

Study chemistry, biology, electricity, and study the mysteries of the vibrations of matter on as many planes as you can consciously reach. 

The knowledge of the future lies there. Man has only begun the conquest of Nature.

—The Judge