👉 The term "nonobservable" is a concept in philosophy and mathematics that refers to an object or property that cannot be directly observed, measured, or compared with other objects or properties. In mathematical terms, it can be described as a property that does not have any direct representation or measurement in the sense of observable quantities. Nonobservability has been used in various contexts by mathematicians, physicists, and philosophers to express the idea that certain aspects of reality are beyond the reach of human observation and comparison.