He is immersed in the study of geometrical optics.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

He taught me how to calculate the geometric mean.

He drew a circle using geometric construction.

In organic chemistry, understanding geometric isomers is important.

He is majoring in linguistics.

He has a deep interest in astronomy.

He is an expert in physics.

Electromagnetism is a part of physics that studies the interaction between electricity and magnetism.

He is an expert in toxicology and conducts many studies.