Electromagnetims
Is a branch of physics which inovels take study of the electromagnetims force.
Examples:
Microwave~To heat food☕
Toaster~To toast the bread🍞
Fridge ~To keep food very cold🍦
Camera ~To takes photos📷
Mobile phone📱☎📞
The mobile phone is a machine that you use to :
•search
•call
•send messages
•play
•listen to music
•...
The History of the MOBILE PHONE
The phone was invented by Martin Cooper, in 17/10/1973 .The first mobile was called : Dyna-Trac.
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