Diffraction grating

Introduction Aspergillus is a saprophytic ubiquitous fungi genus, which includes more than 200 species. This genus have positive and negative impact to human being. Some species of Aspergillus have pharmaceutical applications, but at same time, this genus could be pathogen of respiratory diseases, and also it could synthesys potent carcinogens. The most pathogenic specie of Aspergillus for human is A. fumigatus, which causes a wide range of sickness, depending to the immunological system of…

Introduction: The ability of substances within a solution to absorb light is a wonderful phenomenon as it aids in processes such as determining the concentration of proteins. The way that a solution absorbs light is due to the photoelectric effect. The way the photoelectric effect works is that when light comes in contact with the sample, the photons of light will react with its electrons. As the light travels through the solution, "a photon of light may interact with an electron ... [where]…