tangibly

This term describes a shift from abstract theory or vague promises to concrete, observable reality. It is frequently used in professional, political, or academic registers to emphasize that a change is not just theoretical but can be proven through data, physical evidence, or direct experience.

In a comparative sense, it is stronger than "noticeably" because it implies a level of evidence that is almost physical or measurable. While "noticeably" suggests a perception, "tangibly" suggests a verifiable fact that could be demonstrated to an outside observer.