اصل بول
ENترجمہ ابھی دستیاب نہیں۔ اصل بول دکھائے جا رہے ہیں۔
These are the patterns of invisible waves we use today for communications
Radio waves, television waves, microwaves
Scientists have under development a new device
Which could revolutionize man's use of life
It is called: A laser
