He is trying to write an experimental novel.

He conducts research in the laboratory every day.

In order to find the empirical formula of this compound, you must first calculate the ratio of elements.

It is reported that North Korea has conducted another nuclear bomb test.

He is looking for a proving ground to test his new theory.

He conducted a thought experiment to solve a problem in physics.

This country has fallen into anarchy.

He likes to take a walk in the park at dusk.

That theory is unscientific and has no evidence at all.

He is an expert in computer science.