Telephone interchanges electrical signals into sound wave signals and sound wave signals into electrical signals "within fraction of second".

-
Why don't short film makers in India produce short film on "TELEPHONE" invention hard work and how telephone works ? 

Comments

Post a Comment

Popular posts from this blog

Future is bright for all.

-
Social brilliance being professional brilliance is doing with mind and hand because work is about thinking to make others think. Professional brilliance being social brilliance is doing with voice because work is about thinking to make self think. 
Read more