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.
They measure the absorbance, which is known as the optical density (OD), on a spectrophotometer. One can tell from the OD whether the bacteria are actively dividing or whether they are starting to die.Spectrophotometers use a light source to shine an array of wavelengths through a monochromator.This device then transmits a narrow band of light, and the spectrophotometer compares the light intensity passing through the sample to that passing through a reference compound.hey measure the absorbance, which is known as the optical density (OD), on a spectrophotometer. One can tell from the OD whether the bacteria are actively dividing or whether they are starting to die.