Precautions while using Earphones
Loudspeakers fixed to your ears
Headphones which are often called cans by DJs and people who work in radio broadcasting work in exactly the same way as speakers, so you might want to consult our article on loudspeakers if youre not sure how they use magnetism to turn electrical energy into sound.The biggest difference between loudspeakers and headphones is, of course, size. A loudspeaker needs to set all the air moving in a room so you can hear the sound its making, but the speaker in a headphone only has to move the volume of air inside your ear canal. Thats why it can be so much smaller and more discreet.