How Cell phones work
A cell phone doesn’t need wires to transfer you’re voice, when you speak into your cellphone it transfers your voice into electric signals. There is something in your cell phone called a microchip. What the microchip does is modulate your radio wave using electric signals. The radio waves travel through a nearby cell tower. The cell tower sends your voice over to the person you are calling and the process is reversed so that the other person can hear you talk.
How do landline phones work
When you speak into a landline phone your voice travels in small sound waves that are transferred into a thin metal disk inside the phone. The thin metal disk is called a diaphragm, and what it does is connect the small sound waves to electrical energy. The electrical energy travels over wires to another phone and is transferred from electrical energy to sound waves again so that the person on the other end of the phone can hear you.
How does a string telephone work.
A String telephone has a lot of similarities with the landline phone. When you talk into the cup of a string telephone your voice sends sound waves inside the cup which vibrates the bottom of the cup. Then the vibration transfers to the strings, across to the other cup. Then the sound waves become vibrations inside the other cup transferring the sound of your voice.
Related stories
- https://electronics.howstuffworks.com/cell-phone1.htm
- https://www.explainthatstuff.com/cellphones.html
- https://www.sciencedirect.com/topics/engineering/cellphone
- https://www.geeksforgeeks.org/how-cell-phones-work/
Take Action
