When were brass mirrors created?

Answer While the actual date of when people first started using brass mirrors is unknown, there have been artifacts unearthed that indicate brass mirrors were being used by Egyptians as far back as 3,500 ... Read More »

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When were mirrors made from mercury?

By the end of the Middle Ages, mirrors were made from flat plate glass with a metal backing--an amalgam of 75 percent tin and 25 percent mercury brushed onto the glass to give it a reflective surfa... Read More »

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

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 »

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?