Shilpgram fair, Historical vehicle Indra vimaan, Udaipur
Indra vimman
Range of hearing
Normal human ears can hear only those waves whose frequency lies between 20Hz and 20,000Hz. The waves having frequency between 20 Hz and rs 20,000 Hz are called sound waves.Thus, the audible range of frequency is 20 Hz to 20,000 Hz. The waves having frequency less than 20 Hz and greater than 20,000 Hz cannot be heard by human ears. Children under the age of 5 and some animals, such as dogs are able to hear up to 25 KHz (1KHz =1000Hz). As people grow older their ears become less sensitive to higher waves of frequency. The waves of frequency less than 20 Hz are called infrasonic sound or infrasound. The infrasonic waves are produced by large vibrating bodies. If we are able to hear the infrasound we can hear the vibrations of a pendulum just as we hear the vibrations of the wings of a bee.
Rhinoceroses communicate using infrasound of frequency as low as 5 Hz. Some other animals like whale and elephants also produce waves or sound in the infrasound range. It has been observed that some animals behaviour become unusual before earthquake. Earthquakes produce low-frequency infrasound before the main shock waves begin which possibly alert the animals. The waves of frequency greater than 20,000 Hz are known as ultrasonic sound or ultrasound. Dolphins, bats and porpoises have the ability to produce ultrasound.Moths of certain families possess very sensitive hearing equipment. These moths have the capacity to hear the high frequency squeaks of the bat and know when a bat is flying nearby, and are able to escape capture. Rats also play games by producing ultrasound.
Hearing aid
A Hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. It is an electric battery operated device. The hearing aid receives sound through the microphone. The microphone changes the sound waves to electrical signals. These electrical signals are amplified by an amplifier. The amplified electrical signals are given to a speaker of the hearing aid. The speaker changes the amplified electrical signal to sound and sends to the ear for clear hearing.
Read more articles 👇
Our Blog--kpssuresh.blogspot.com
Popular posts from this blog
Shilpgram fair, Historical vehicle Indra vimaan, Udaipur
Indra vimman
amazing happiness | get happiness check your happiness
Happiness Happiness is a state that is directly related to you. No one can take away this feeling until you change your behavior. A new chapter has begun in the book of times. In such a situation, it is important to know that what is the measure of happiness in our life?Just as one's life is not the same as the other's, similarly this scale is also completely different. 😃 Build Your Happiness Index in 5 Minutes 1. You are a good friend 2. Compliment others 3. Not overly ambitious 4. You talk less and listen more 5. Your family is happy with your behavior 6. You are always ready to help others 7. Does everyone in the office like your working style? 8. Try to learn from every mistake or failure 9. Are you able to attend festivals and family functions? 10. Do you look for the good in others rather than the bad. 😄 How to know the level of happiness 👉 If the score is less than 2, then behavior should be changed. 👉 If yes in 2 to 4 then your level is below normal. 👉If yes
FORTNITE game
😳fortnite players are getting $245 million in refund Legendary Games, maker of the greatly famous computer game fortnite, was hit with the Government Exchange Commission's greatest punishment ever for a standard break this week. ➡️The designer was requested to pay $520 million for disregarding the Youngsters' Web-based Security Go about as well with respect to fooling great many players into making accidental in-game buys UTILISING a method called "Dull examples." 👉fORTNITE is allowed to play and makes billions of dollars from in-game buys like computerized skins for players' characters and occasional "Fight Passes" that give helpful things as a client invests more energy playing. ⏩In a delivery separating EPIC,s infringement, the FTC said that the game's "illogical, conflicting and befuddling button design drove players to cause undesirable charges in light of the press of a solitary button," including while players thought the game
Comments
Post a Comment