The phrase "apply to the realm of" is correct and usable in written English.
It can be used when discussing how a concept, principle, or rule is relevant or applicable to a specific area or field.
Example: "The theories of quantum mechanics apply to the realm of particle physics."
Alternatives: "pertain to the field of" or "relate to the domain of".
All of these techniques should be applied to the realm of financial supervision.Central banking may hold lessons for compensation, too.
The one issue Mr. Lessig addresses speaks to the broader area of how traditional antitrust doctrine applies to the realm of computer software.
Another change in the concept of askēsis occurred in ancient Greece when the notion of such training was applied to the realm of ethics in the ideal of the sage who is able to act freely to choose or refuse a desired object or an act of physical pleasure.
This observation can easily be applied to the realm of politics and media at large — where every supposed debunking seems to produce its own kind bunk, and where the idea of reality television flips from oxymoron to tautology in the space of a commercial break — but let's stay with the movies for now.
The conception of space is applied to the realm of our ideas, to the outside reality and to the perception of time as well.
This principle also applies to the realm of interpersonal relationships; "to be free from anger, envy, and jealousy," and to accept even slaves as "equals of other men, because all men alike are products of nature".
Creating value is the name of the game in integrative negotiations and these principles also apply to the highly competitive realm of business negotiations.
This man who had been respected worldwide as a Nobel Prize winner and as the only person in America who was advocating change without violence, suddenly applied his nonviolence ethic and practice to the realm of foreign policy.
The same applies to the whole realm of activities that occur at the school tree climbing, cooking, playing musical instruments, and so on.
By pure mathematical deduction, Newton showed that these two general laws (whose empirical basis rested in the laboratory) implied, when applied to the celestial realm, Kepler's three laws of planetary motion.
