 Terahertz imaging can detect different isomers have different spectral fingerprints in the terahertz range, which enables terahertz spectroscopy to distinguish between stereoisomers—a crucial distinction in pharmacy, where one isomer may be the active compound and its enantiomer may be inactive or even dangerous.Terahertz systems are also used for gauging tablet coating quality.Terahertz imaging enables non-destructive analysis of valuable artworks and can be conducted onsite.