It needs more than an electromagnet. You have an electromagnet with an iron diaphragm in the magnetic field. When the audio current from the amp flows in the electromagnet, the diaphragm moves at the same frequency, making the sound that you hear.
speakers make the musis louder while headphones make the music go directly to your ears, this makes you the only person able to hear it.
you make sounds with your voice. You blow air, and add some of your voice too. This is called 'speaking'.You also hear sounds with your ears.
usful energy will be that it make sound for the person to hear through it
Elephants make a number of sounds. They make specific sounds related to sex and danger which we can hear and understand. However, they have a much larger number of sounds which are too low in frequency (infra sound) for our ears to hear which is propagated via the elephant's legs and feet through the ground over great distances. The most common sound (that we can hear) that elephants make is called trumpeting. We can also hear them make a low rumbling noise. Examples of this can be heard by clicking on the related link.
maybe you could make a game where you hear sounds and he has to tell you what the sounds are.
It's been said that they do when they are hurt or threatened, but the sound is too high pitched to hear.
Speakers use pulses of electricity to activate a small electromagnet that surrounds another magnet. it has a plastic covering, so as to mimic the vibration of our vocal chords and make noise.
Mosquitoes make sounds near the human ear because mosquitoes make sounds everywhere. It sounds as though the mosquitoes are purposely seeking out the human ear when in reality, we only hear them when they're close.
The music artist Dr Dre stated that he started up the company 'Beats' because he was tired of his music being heard through poor quality earbuds and headphones. From this, he decided to make good quality headphones to allow his fans to hear what he wanted them to hear.
No, they don't really have noise reduction properties, but they are designed exceptionally well to make you only hear the sound from the headphones.
When shopping for headphones, you should make sure that they are compatible with your mp3 player. You might also want to consider a wireless set. My favorite is noise cancelling headphones! You won't be able to hear anything except your music!
how to make road rail signal using electromagnet