What is the difference between spectral evidence and tangible evidence?

Spectral evidence refers to testimony about visions or appearances of spirits or supernatural entities, often used historically in witch trials, where witnesses claimed to see the spectral forms of accused individuals committing wrongdoing. In contrast, tangible evidence consists of physical objects or material proof that can be directly observed and examined, such as documents, fingerprints, or weaponry. The key difference lies in the nature of the evidence: spectral evidence relies on subjective experiences and beliefs, while tangible evidence is concrete and verifiable.