... materials have max-imum capacities from around 106–108bits/cm2.(7) Archival aspects: If correctly processed andstored, black-and-white images are of archivalpermanence.(8) Shelf-life: For ... displaced black-and-white photographyin virtually all applications with the possible excep-tions of fine art photography. Although there aresome advantages in monochrome recording by digi-tal means ... asultraviolet, which causes sunburn, X-radiation, whichcan penetrate the human body, and gamma-radiation,which can penetrate several inches of steel. BothX-radiation and gamma-radiation, unless properlycontrolled,...