
Visible near-infrared (VNIR)
Visible Near-Infrared (VNIR) refers to a portion of the electromagnetic spectrum that includes light you can see (visible) and just beyond the red end of the spectrum (near-infrared). It ranges approximately from 400 to 1000 nanometers in wavelength. VNIR is used in remote sensing and imaging to analyze materials, vegetation health, or land features, because different substances reflect and absorb light differently within this range. This capability allows scientists and engineers to gather detailed information about objects or surfaces from a distance, such as satellites capturing images of Earth's surface.