Applications of the siren
This article is about the siren, an invention that changed how we are made aware of emergencies. This article will touch on some of the many uses of the siren as well as its history. Some of the uses briefly touched on are emergency service vehicles, to warn against air raids and tornado sirens.
A siren is used for the chief purpose of warning people of impending danger. They are commonly used in fire stations, government buildings or on chimneys of selected buildings to warn an entire community of impending danger such as fire and natural disasters. Emergency service vehicles also use a siren to warn other drivers to make way for the vehicle to pass. sirens are expected to be very loud as well as be paired with flashing lights to indicate the urgency of the situation. Some of the emergency vehicles that use sirens are ambulances, fire engines and police trucks. The siren has worked to ensure that besides a visual warning, emergency vehicles have an audio warning as well. This will warn motorists in advance of the approach of the emergency vehicle even before the lights can be seen.
The siren made its debut for its contribution in warning people of impending danger. The siren was first seen in the Second World War where it was used to warn people of air raids. Air raids were a common and there was no system put in place to warn people of bombs. This is when the siren was found to be useful as it warned many people over a wide area of danger. These sirens were mainly mechanical sirens.
There is however a newer siren that is even more effective in warning people of danger. The electronic siren uses a tone generator, a high-powered amplifier and a loud speaker. The electronic siren has loud speakers placed in all directions to ensure that sound travels in all directions. The effect this has is that the siren can be heard simultaneously from all directions and by many people. The sirens are also placed on a long pole that may be 30 – 50 feet in height. This ensures that sound travels for long distances and can be heard from far.
A siren has a particular pitch and volume that may associate it with a certain emergency. A siren may be used to warn the population of a flood, tsunami, tornado or other natural disasters. Natural disasters are very distractive and so there is a need for a prior warning to make sure that people can evacuate the area before the disaster actually happens. Electronic sirens use less energy than the mechanical sirens and this means that they are more effectively used for the purpose of warning individuals.
sirens have been perfect for warning people of emergencies. A siren should be used in conjunction with lights because the effect conveys the urgency of the situation. sirens are also used at home and are set to go off incase of a fire or intruders in the house. A siren used at home for security sounds different from that used for emergency vehicle or to warn people of an impending disaster. The home sirens are not as loud as they only need to get the attention of people in the immediate area. sirens that can be automatically set off by smoke from a fire are meant to alert the residents that they need to evacuate the building because of a fire. sirens have saved lives and greatly reduced the number of injuries and lives lost.
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