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A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.
The M1 Garand or M1 rifle [nb 1] is a semi-automatic rifle that was the service rifle of the U.S. Army during World War II and the Korean War.. The rifle is chambered for the .30-06 Springfield cartridge and is named after its Canadian-American designer, John Garand.
English orthography comprises the set of rules used when writing the English language, [1] [2] allowing readers and writers to associate written graphemes with the sounds of spoken English, as well as other features of the language. [3] English's orthography includes norms for spelling, hyphenation, capitalisation, word breaks, emphasis, and ...