There are loads of ways people can communicate on earth but I only have to explain three and how they work rather than like fifteen so here they are.
1.Cellphone/Mobile Phone
How does it work?
According to google a cell phone is essentially a two way radio consisting of a radio transmitter and a radio receiver. And when you talk with someone on your cell phone your cell phone converts your voice into an electrical signal which is then transmitted via radio waves to the nearest cell tower. The network of cell towers then relays the radio wave to your friend's cell phone which converts it to an electrical signal and then back to sound again.
2.A radio
How does it work?
Radio transmitters work by supplying a very fast changing electrical signal to an aerial like the ones on specific cars. To create a changing electromagnefied field. The speed at which these currents change controls the speed at which the electromagnetic field around the aerial changes. This is measured in hertz.
3. Paralinguistics
I don’t know much about this but this is what I got from the web,
Paralinguistics alludes to vocal communication that is detached from actual language. This includes factors like tone of voice, loudness and pitch.
Think of the powerful effect that tone of voice can have on the meaning of a sentence. When said in a strong tone of voice, listeners might interpret approval and enthusiasm. The same words said in a hesitant tone of voice might convey disapproval and a lack of interest.
We needed to comunicate from one end of the school field to another
