Numerous legends created to clarify this riddle. The Greek goddess of knowledge, Athena, has for quite some time been related with the savvy and quietly flying owl. Inclining toward this animal as her preferred feathered companion, Athena offered unique assurance to the owl. Accordingly, numerous owls lived in the Acropolis. The stealth-chasing owl additionally filled in as a defender to Greek armed forces. Pictures of the owl frequently adorned warriors' shields. Since individuals accepted owls anticipated triumph when one showed up before fight it flagged triumph. Be that as it may, others considered owls to be indicators of death. Legend has it that the hoot of an owl reported the demise of Julius Caesar.
In addition, Hindu culture relates the owl and its noiseless flight with the goddess Lakshmi and thinks about the owl as an image of karma and thriving. Local American societies additionally adore this winged miracle. For example, Apaches accept that in the event that you long for an owl, demise might be soon to follow. Different clans, for example, the Dakota Hidatsa, see the owl as defenders to warriors. Indeed, even today, owls hold an extraordinary spot in mainstream society. How could mail conveyance at Hogwarts work without the trusty, noiseless owl postal framework?
How about we realize exactly what's behind the riddle.
Owls' Feathers and Wing Structure:-
While it adds to the owl's persona, quiet flight fills an exceptionally down to earth need. It enables this nighttime animal to sneak up on its prey. In any case, how do owls fly quietly in any case?
The design of owls' wings permits them to fly in practically total quiet. Various pieces of their wings and the attributes of their feathers add to their quiet flight. Owls have wide wings with huge surface regions that help them to skim through the air without fluttering excessively. Less fluttering makes less noise.
The principle reason owls can fly quietly is the particularly designed driving edges of their essential feathers. At the point when most fowls fly, choppiness — made when air spouts over the outside of their wings — causes noise. Owls' wings, in any case, are special since they lessen noise brought about by disturbance.
An owl's essential feathers are serrated like a brush. This design separates disturbance into littler flows called small scale turbulences. At that point, the edge of the quill mutes the sound of air streaming over the wing and moves the edge at which air streams. These delicate feathers permit air to go through which dispenses with sound. A few people presume that similar to the owl's flies, these feathers may likewise move sound vitality made by the owl's wing to a higher recurrence that prey can't hear.
Owls' auxiliary feathers are comprised of delicate edges that decrease choppiness behind their wings. The trailing feathers toward the back of the wing are worn out, and the remainder of the wing and the legs are shrouded in fleece feathers. As the owl flies, the trailing periphery and worn out feathers break sound waves over the wings as air streams over them. The down feathers ingest any residual noise made in flight. The down assimilates frequencies over 2,000 hertz — the proportion of recurrence — which takes out all sounds that owls' latent capacity prey can hear [source: Roach].
Thus, the mystery's in the wings. In any case, does this noise-lessening design have a spot on your next airplane flight?
Owl Influence on Aeronautics and Aircraft Design:-
Architects continually scan for approaches to improve aircraft innovation, and nature rouses the best advancements. They look to the design of owls' wings to decrease the noise made via aircraft while keeping departure vitality effective.
Geoffrey Lilley, an educator emeritus of air transportation and astronautics at the University of Southampton in England, contemplates owl flight and the manners in which it can support flying. Lilley works related to the Quiet Aircraft Technology venture inside the Vehicle Systems Program situated at NASA's Langley Research Center in Hampton, Va. He and his partners are fashioning the way of owl-affected aircraft design.
So by what method can engineers alter a tremendous aircraft to reflect the life systems of the owl? Analysts propose the chance of making a retractable periphery to reflect owls' trailing feathers. For the owl, this periphery decreases choppiness and noise. A few analysts imagine that applying a smooth covering — like that of an owl — on landing rigging will assimilate noise similarly as it accomplishes for the owl [source: Roach].
Could owls' feathers change your next flight? Airports like Chicago O'Hare and Heathrow have severe noise limitations on aircrafts take-off. On the off chance that architects figure out how to diminish noise, more flights can remove each day, and income can increment. For an industry battling with fuel costs and different issues, the savvy old owl may give a few arrangements.
You can also see the research done by BBC EARTH which is available on youtube:-https://www.youtube.com/watch?v=d_FEaFgJyfA