what is a air raid siren
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- Air Raid Siren is a free and epic soundboard app featuring many high quality stereo sound effects from tornado and air raid sirens. Includes siren sounds from around the world! Prank your neighbors into thinking there is an incoming air raid! Sounds include: acap50 brattleboro carter loop carter hand siren model 2 model 7t model 2580 sentry yugoslavian and many more! Tap on the sounds once to play a single time.
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- Federal Signal's SSTX-MV is an explosion-proof electronic siren capable of producing one of four high decibel tones from the same unit. The circuitry is contained in a rugged die-cast aluminum amplifier housing.
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Definitions &Translations Siren (noun). a sea nymph (part woman and part bird) supposed to lure sailors to destruction on the rocks where the nymphs lived. Odysseus ordered his crew to plug their ears so they would not hear the Siren's fatal song. enchantress, temptress, siren, Delilah, femme fatale (noun).
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RAID For other uses, see Raid (disambiguation). RAID (redundant array of independent disks) is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both.
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What is RAID 5 â RAID parity explained RAID is an acronym meaning “Redundant Array of Independent Disks”. As the name implies, RAID creates an array of multiple hard disks in order to provide redundancy. An array simply means a collection of drives that are presented to the operating system as a single logical device.
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Air Raid Precautions in the United Kingdom Air Raid Precautions (ARP) was an organisation in the United Kingdom set up in 1937 dedicated to the protection of civilians from the danger of air raids. It included the Raid Wardens' Service that was to report on bombing incidents.
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- More. In classical mythology the Sirens were bird-women whose beautiful singing lured sailors to their doom on submerged rocks. People hear a siren song or siren call when they are attracted to something that is both alluring and potentially harmful or dangerous.
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Airwolf  (helicopter) Airwolf is the helicopter from the 1980s American eponymous television series. Its fictional features included stratospheric ceiling, stealth noise signature, a wide range of weapons and even supersonic speed. Airwolf was in fact a conventional Bell 222 helicopter modified by attaching some film props.he airframe used for Airwolf was serial number 47085 (registration number N3176S), of the initial production version, sometimes unofficially called a Bell 222A.
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- A ram air turbine is a small airflow driven engine that supplies supplies emergency electrical or hydraulic power to aircraft or...
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- Warning Sirens. • The definition of warning: Is to inform the population, through various means of warning about the presence or disappearance of any of the sources of threats (fatal, natural, industrial, war) that threaten their lives or their properties.
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Sound barrier Sound barrier. The sound barrier or sonic barrier is a popular term for the sudden increase in aerodynamic drag and other effects experienced by an aircraft or other object when it approaches supersonic speed. When aircraft first began to be able to reach close to supersonic speed, these effects were seen as constituting a barrier making supersonic speed very difficult or impossible. In dry air at 20 °C, the sound barrier is reached when an object moves at a speed of 343 metres per second. The term came ...
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- An electronic leak detection system operates on that principle known as acoustics or the principles of sounds. The electronic machine that is attached to a building's security system registers the sound made by leaks since it picks up sound waves and transmits their originating site using the safety system installed.
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Siren Siren - Most common uses. 1  Siren (mythology), a creature in Greek mythology. 2  Siren (alarm), a loud acoustic alarm used to alert people to emergencies.
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Section F, Fig 5.3. Air Force Standardized Attack Warning Signals If you hear alarm red, see a red flag, or the siren is a wavering tone, it indicates: (Fig 5.3.) air attack is imminent or in progress If you hear Ground Attack or a bugle playing Call to Arms or see a red flag, it indicates: (Fig 5.3.) attack by ground forces is imminent or in progress If you hear alarm black, the siren sounds a steady tone, or see a black flag, it indicates: (Fig 5.3.) attack is over and CBRN contamination and/or UXO hazards are suspected or present There are four alarm conditions: green, yellow, red, and black.
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Siren (alarm) Siren (alarm) A siren is a loud noise making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire trucks. There are two general types: pneumatic and electronic. Many fire sirens serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station or on a pole next to
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- And a radio attack in April caused tornado sirens in Dallas to sound at midnight. —
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How many decibels does a sonic boom have? Trending Now. Answers. Best Answer: A sonic boom is the audible component of a shock wave in air. The term is commonly used to refer to the air shocks caused by the supersonic flight of military aircraft or passenger transports such as Concorde (Mach 2.2, no longer flying) and the Space Shuttle (Mach 27).
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siren The sound of a civil defense siren. ( 1 original sense) (Greek mythology) One of a group of nymphs who lured mariners to their death on the rocks.  A device, either mechanical or electronic, that makes a piercingly loud sound as an alarm or signal, or the sound from such a device.
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Outdoor Warning Sirens Outdoor Warning Sirens. The City of Fort Worth Outdoor Warning System may be activated for any kind of emergency – not just severe weather. The Fort Worth outdoor warning system consists of 153 sirens strategically located throughout the city. Sirens are designed to serve as a warning for people outside of their business or residence.
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- Middle English (denoting an imaginary type of snake): from Old French sirene, from late Latin Sirena, feminine of Latin Siren, from Greek Seirēn. More. In classical mythology the Sirens were bird-women whose beautiful singing lured sailors to their doom on submerged rocks.People hear a siren song or siren call when they are attracted to something that is both alluring and potentially harmful or dangerous.iddle English (denoting an imaginary type of snake): from Old French sirene, from late Latin Sirena, feminine of Latin Siren, from Greek Seirēn. More. In classical mythology the Sirens were bird-women whose beautiful singing lured sailors to their doom on submerged rocks.
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- 1 Seller concession. 2  A seller concession helps buyers pay their closing costs. 3  If the buyer asks you for a concession of, for example, 3 percent, that amount will be added to your agreed-upon home price, and you will give back that 3 percent to the buyer to pay for closing costs. 4  Repairs.
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How to Make a Beatbox Siren Sound Up next in How to Beatbox (35 Videos) [Siren noise] This is what is call the siren. Now, the siren, you can use it however you want. It doesn’t have to be like a cop siren. You can just be creative with it, but the way you do it is you take your top teeth, you want to put them on your bottom lips.
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Suncourt ZC106 6-Inch Diameter Normally Closed Electronic HVAC Air Duct Damper with Power Supply The Suncourt Zonemaster is a 6-Inch Diameter Normally Closed Electronic HVAC Air Duct Damper with Power Supply that allows you to shut off airflow to unoccupied or unused rooms, which limits the flow of heated or cooled air to the areas that really need it.
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Warning Sirens • The definition of warning sirens: It is about a modern method of multiple tones in which each tone has its own meaning given to alert the residents of the impending danger – during its occurrence – and its elimination. • The means of warning: 1) Fixed and mobile Warning sirens. 2) Loudspeakers. 3) And audio, visual, and printed media (TV, Radio, Newspaper). 4) Any other means to transfer information. • Types of warning sirens: 1) Electronically 2) Electrically 3) Wireless. The definition of the tones of the warning: They are the distinguished sounds made by the warning sirens. The meaning of each warning tones was set in Saudi Arabia and in the GCC, and they are three tones: 1) The first tone: is about a tone (fixed intermittent one) that continues for a period of (one minute) and indicates to the early warning of the proximity of the danger.
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Joint Publication 1-02 A protective screen of balloons that is moored to the ground and kept at given heights to prevent or hinder operations by enemy aircraft. This meaning also called balloon barrage. 3. A type of electronic attack intended for simultaneous jamming over a wide area of frequency spectrum.
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- Barrage balloon. A barrage balloon, sometimes called a blimp, is a large balloon tethered with metal cables, used to defend against aircraft attack by damaging the aircraft on collision with the cables, or at least making the attacker's approach more difficult.