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.
spectrophotometer have a wide spectrum of filters for measuring the absorbance of all light waves eg350 nm to75o nm or more so that it can measure the absorbance of coloured light waves coulourless light infra