Some important inventions
... is considered to be the inventor of the telephone.
Bell's telephone was invented in the ... century.
Edinburgh, Scotland, is Alexander Bells' native town.
All his life Alexander Bell lived in Scotland.
In America Alexander Bell taught ...
When working with deaf people Bell became interested in ...
Who was Bell's work financed by?
"Come here, Mr Watson, I want to see you" - said Bell through apparatus and Watson heard his words from the other room.
In the first telephone exchange in 1878 took part ... than twenty people.
In 1962 the ...
Christian Huygens designed the first accurate clock in ...
The designer of the first accurate clock was born in Holland.
Mechanical clocks made in 14th century...
Sundials is another name for...
The oldest instruments for telling the time were developed ...
For telling the time people in ancient Egypt used...
Water clocks measured the time by how long it took water to flow through the holes in a container.
If sand clocks took about 60 minutes to empty, they were called...
Today sand clocks are often used as kitchen egg-timers.
Pocket watches were mainly made in Switzerland and France.
Pocket watches were invented...
Wristwatches are the watches that you...
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