Viral diseases: Introduction. A viral infection is any type of illness or disease caused by a virus, a type of microbe. Microbes are tiny organisms that cannot be seen without a microscope and include bacteria, fungi, and some parasites, as well as viruses.iral diseases: Introduction. A viral infection is any type of illness or disease caused by a virus, a type of microbe. Microbes are tiny organisms that cannot be seen without a microscope and include bacteria, fungi, and some parasites, as well as viruses.
OPTAR stands for Operating/Operational Target. Operating Targets. Operations, Planning, Training and Resource Support Services. Oceanside Photo & Telescope Astronomical Society (San Diego County, CA) Operational Tasking. Operational Tasking Data Link. Operational Tasking Nuclear. Occasional Papers in Translation and Textlinguistics.
LiDAR is the practice of using light or non-visible (e.g., infrared) electromagnetic radiation to detect and measure distance to objects. LiDAR stands for LIght Detection And Ranging. You've probably heard of LiDAR before, but you may not really know much about it.