Articulatory phonetics is a study about the production of speech sounds.

Acoustic phonetics is the study of the physical properties of speech.

I am majoring in microbiology at university.

I studied calculus at university.

He is an expert in folklore studies, and his research is highly regarded worldwide.

He is an expert in experimental psychology.

Radio astronomy plays a very important role in understanding the universe.

Infrared astronomy provides a new perspective on understanding the universe.

He is an expert in geophysics.

He is an expert in human anatomy.