He was dozing off in the train.

He is an expert in analytical mechanics and deeply understands its theory.

He is studying thermodynamics in depth.

Quantum mechanics is a branch of physics that studies the behavior of microscopic particles.

I fine-tuned the television to make the picture clear.

He tuned in the sound of the guitar.

I studied calculus at university.

Microorganisms are one of the basic forms of life.

He is an expert in electrodynamics.

Chromodynamics is a part of particle physics that describes strong interactions.