Nowadays blind people can use Echolocation to feel things around them.Human body has a very special thing.Not everyone is blessed to have eyes from their birth.We watch everything that’s going around us.We capture every moment in life because of our eyes.
But the question arises. If we do not have eyes so ?
If we want to navigate what will be the possible way?
For eg :- A bat flies very easily in dark .He is hidden inside a dark cave and after that he flies and hunts also.
So how is he navigating?
Or we talk about the depth of water in oceans,where there is no light,so how wales hunt.
So here comes a word called Echolocation.
What is Ecolocation.
Echolocation is the ability to sense or feel an object by a sound wave in the environment. Many animals use echolocation. But as we move forward,many discoveries happened. Blind people are also using echolocation nowadays.
How does Echolocation works.
The basic concept behind is very simple. A animal sends a sound wave which is of very high frequency.A frequency which cannot be heard by humans.The moment the animal sends a sound wave and hits an object.It immediately bounces back the same wave to the animal.Animals have a very special things that allows them to receive and feel that sound wave.As soon as the sound comes back an animal can easily identify the characteristic of the object that is in front of him.
ie- size, shape and length.
The most important thing here is the timing.Wait let me go little behind,When we were very small . We watched that first comes the lightning and then comes the sound in a rainy day.
That’s only because of the time.As light travels faster than sound.and that’s the main thing here.
If a sound wave takes a long time to come back it means the object is far away from the animal.The shorter the wave takes the time the closer is the object.
Does echolocation happens in all animals.
No,it isin’t only few animals have the power of echolocate .They have a very special power.Some animals are Bats ,Dolphins and whales.
Bats are one of the most gifted creatures.Bats also navigate through echolocation. In dark places Bats are in search of their food.Similarly,the animals produce a sound wave which humans are not able to hear .The range of frequency which humans hear is 20 to 20,000 Hz. While the bats produce a frequency of 14,000 to 100,000 Hz.
Bats also have a very special thing .They have a very acute inner structure.From which they feel a particular frequency.
What sound the bats make?
As of now,you would have read that bat uses echolocation to find their food.Bat makes sound which are higher than the human frequency could actually hear.Bats sounds are very difficult to hear by a human outside.These sounds can only be heard inside an insulated room.They generally sounds in night or in morning.They have a wing and when they flutter them noise can be listened.Their wings are very beneficial to them which are allowing them to crawl or move.
How does Whales and Dolphins Echolocate.
Apart from bats ,Whales and Dolphins also Echoloacte. Whales are using echolocation to navigate and watch the other creatures at a larger distance.Sound waves travel a very long distance in water.Here echolocation is the same thing which bats are using.Dolphins and Whales use a special method called SONAR.
Toothed whales and ballen whales use echolocation quiet differently.Toothed wales use this to navigate and hunt while ballen whales use echolocation for communicating only.
Echolocation in humans|How to learn echolocation Wikihow|
The Physics of Echolocation is very simple and easy to understand.Its similar to vision in lot of ways.
It is basically the acoustic energy instead of light energy. Here the energy is coming out from an individual.There is just a basic difference between an animal and a human.Animals are producing a sound as they are gifted to it .Whereas humans are making sound from tongue.The sound which is produced bounces off everything in the environment and all surfaces everywhere and comes back to the person .
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For understanding more about this ,let us go through the golden words of Daniel Kish. It will motivate all the people who want to feel this beautiful world.
A young boy called Daniel Kish is blind when he was very young. President of WORLD ACCESS FOR THE BLIND is Daniel kish.Vocal clicks are generated in his own method. From which he feels the things around him.
Kish said “You could fill libraries with what we know about the human visual system”But what we know about human echolocation could barely fill a bookshelf.”
Echolocation doesn’t mean that a person will Definately see everything.But he can feel the things around him through a vocal noise made by him.
We hope this technology in humans be very successful in coming future.As people who do not have eyes could feel and live with freedom in this beautiful world. As this world gives oppourtunities to all people.So new technologies are giving the blind people oppurtunity to live their life in such a way that they feel no more less than normal human being.