When were cell phones invented&who were they made by?

Answer Martin Cooper invented the cell phone in 1973, and Motorola was its maker. The phone was much bigger and heavier than today's models. Called the DynaTAC, the phone did not go one sale until 10 year... Read More »

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What were the best ways to travel before cars airplanes trains and automobiles were invented?

Were would you be now if computers were not invented?

When were house numbers introduced?

In Britain, houses were traditionally given a name that described them--such as Corner Cottage or Orchard House. The Postage Act of 1765 provided a numbering system for easier identification. The U... Read More »

Who invented glow in the dark numbers for watches?

The original glow in the dark watches got their glow from radium, a radioactive element mixed with zinc sulfide that glows when exposed to radiation. William J. Hammer invented this paint in 1902 a... Read More »