Electromagnetims

                                                        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.