The term monographia is derived from the Greek 'mono' (single) and grapho (to write), meaning writing on a single subject. Unlike a textbook, which surveys the state of knowledge in a field, the main purpose of a monograph is to present primary research and original scholarship.he term monographia is derived from the Greek 'mono' (single) and grapho (to write), meaning writing on a single subject. Unlike a textbook, which surveys the state of knowledge in a field, the main purpose of a monograph is to present primary research and original scholarship.
LEDs are âdirectionalâ light sources, which means they emit light in a specific direction, unlike incandescent and compact fluorescent bulbs, which emit light and heat in all directions. For this reason, LED lighting is able to use light and energy more efficiently in many applications.
Both LED lamps and integrated lighting fixtures have their own inherent advantages and disadvantages. An integrated lighting fixture is a complete outdoor light fixture assembly, which includes a built in LED or halogen lamp. Though integrated lighting fixtures simplify lighting system installation, they also pose difficulties in terms of maintenance and lighting upgrades.