TELEPHONE
It was invented by Alexander Graham Bell in 1876.The telephone came about thanks to a discovery that a thin metal sheet vibrating in an electromagnetic field produces an electrical waveform that corresponds to the vibration.
Today the phone is very important, the people can comunicate with other people around all the world in very little time,there are two types of telephone: the mobile phone and the fixed telephone.
PHOTOGRAPHY
It was invented by William Henry Fox Talbot. In 1835, Fox Talbot (right) made another breakthrough by using silver
iodide on paper and found a way to produce a translucent negative that
could be used to make any number of positives by contact printing a
system used until the advent of digital cameras.
Today photography is a good way to save your memories printed on paper or computer.
Modern fire extinguisher
It was invented George William Manby in 1818.The first modern extinguisher, the Extincteur, was invented after Manby
saw firemen struggling to put out a blaze on the top floors of a house
fire in Edinburgh. His solution was a portable copper cask containing
three to four gallons of potassium carbonate, which dispersed by
compressed air via a stopcock.
this fire extinguisher can save many live, it's very confortable and easy to operate. 
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