In 1892 – The first successful automatic telephone system was introduced in Laporte, Indiana. Almon Strowger, an undertaker, came up with the idea because the non-automatic system made it possible for his customers’ calls to be intercepted by his competitor, who was in a relationship with the operator.
in 1925 – Television was beamed to London for the first time. If you put everything into it except the kitchen sink, you’d have the transmitter that was used. To build the transmitter, John Baird used a tea chest, a biscuit box, darning needles, piano wire, motorcycle lamp lenses, old electric motors, cardboard scanning discs and glue, string and sealing wax.