Fissures are double folds of pleura that divide the lung into lobes. There are three lobes in the right lung and two in the left lung. The lobes are further divided into segments and then into lobules, which are hexagonal divisions of the lungs that are the smallest visible subdivision.
Spectrophotometers are color measurement devices used to capture and evaluate color, including specification and communication of color, and monitoring color accuracy.
An early example of a spectroscope. Prisms split light by refraction; the resulting spectrum is measured by the spectroscope. In astronomy, a spectroscope may be used in conjunction with a telescope. A spectrophotometer measures how much light is reflected off of -- or absorbed by -- an object. spectroscope is a scientific instrument that splits light into its different wavelengths, which humans see as different colors.