The
device called “horn” has undergone many stages of evolution before it became
what we see today. It didn’t always look like a party popper with a pump and a
whistle. The use of horn surprisingly extended to trains and water vessels, not
staying limited to just land vehicles. In order to debunk all the myths about
horns that you have heard as heresy, read this blog to know how it works. Once
you know that, you won’t be fooled by the statement that car horns
sound hoarse in the rains.
Horns
are based on the electromagnetic principle. Pretty straightforward. The fun
part is that this principle is combined with Hooke’s law, which finally results
into sound. There is a metal diaphragm, usually made from spring steel, an
electromagnet, and a switch. Hooke’s law says that extension of a spring is
directly proportional to the load applied to it. In the case of a car horn, the
spring is the steel diaphragm, and the load is current flowing through the
electromagnetic coil which is activated or deactivated by the switch. Passing
current through this diaphragm makes it oscillate, which creates sound waves. This
assembly is housed in a megaphone-shaped assembly, which works to spread the
noise created.
There
is no shortage of jaywalkers and traffic-rule breakers on the planet. Horns are
the device that make it possible for the drivers to save lives on the road.
Horns make it possible to make way on the road when there is a lazy vehicle
ahead. Horns give traffic some character. Know your horn.
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