A more thorough explanation:

Definition: The law that governs things and is determined by changes in the nature of things. It is also known as jus rerum, which means "the law that pertains to things."

Examples: The law of things applies to property rights, contracts, and other legal matters related to physical objects. For example, if a person owns a piece of land, the law of things determines their rights to use, sell, or transfer that land. Similarly, if two parties enter into a contract to buy or sell a car, the law of things governs the terms and conditions of that agreement.

The law of things is based on the idea that legal rights and obligations are tied to physical objects and their characteristics. As the nature of things changes, so too does the law that governs them. For example, advances in technology have led to new legal issues related to digital property and intellectual property rights.