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"Sonar" can refer to one of two types of technology: passive sonar means listening for the sound made by vessels; active sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. [4]
If the object is a predicate noun or adjective, the line looks like a backslash, \, sloping toward the subject. Modifiers of the subject, predicate, or object are placed below the baseline: Modifiers, such as adjectives (including articles) and adverbs, are placed on slanted lines below the word they modify. Prepositional phrases are also ...
Phonics is a method for teaching reading and writing to beginners. To use phonics is to teach the relationship between the sounds of the spoken language , and the letters or groups of letters or syllables of the written language. Phonics is also known as the alphabetic principle or the alphabetic code. [1]
Sonar (sound navigation and ranging) is a technique that uses sound propagation under water (or occasionally in air) to navigate, communicate or to detect other vessels. There are two kinds of sonar – active and passive. A single active sonar can localize in range and bearing as well as measuring radial speed.
The first published English grammar was a Pamphlet for Grammar of 1586, written by William Bullokar with the stated goal of demonstrating that English was just as rule-based as Latin. Bullokar's grammar was faithfully modeled on William Lily's Latin grammar, Rudimenta Grammatices (1534), used in English schools at that time, having been ...
Federal security experts have long warned about the risk from vehicle attacks and typically recommend a "layered" approach to preventing them during large gatherings like parades, concerts or ...
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An ocean exploration company took a sonar image of an object that resembled Amelia Earhart’s missing plane in January. New imaging confirmed it was a rock formation. They thought they’d found ...