There isn't a single, universally accepted name for scientists who study a "physical character." The name would depend entirely on what specific physical character they are studying.

Here are some possibilities, depending on the context:

* Physicists: This is a general term for scientists who study matter and energy and their interactions. If the physical character relates to fundamental physics principles, this could be the appropriate term.

* Biologists: If the physical character is related to living organisms, biologists would be the relevant scientists. They specialize in fields like anatomy, physiology, or genetics.

* Chemists: If the physical character relates to the composition, structure, properties, and reactions of matter, chemists would be involved.

* Geologists: If the physical character relates to the Earth's structure and processes, geologists would be the relevant scientists.

* Psychologists: If the physical character is related to the human mind or behavior, psychologists would be involved.

* Anthropologists: If the physical character is related to human evolution or cultural differences, anthropologists would be the relevant scientists.

Specific examples:

* Scientists studying the physical character of "height" could be called:

* Anthropologists (if studying human height variation)

* Geneticists (if studying genetic factors influencing height)

* Scientists studying the physical character of "light" could be called:

* Physicists (if studying the fundamental nature of light)

* Astronomers (if studying the light emitted from celestial objects)

In summary, the most accurate term for a scientist studying a physical character will depend on the specific character being studied and the scientific discipline involved.