Scientists; Authors

Some authors and writers spoke in their novels and books about some imaginary devices that later truly happened, some of these authors and writers are: Leonardo Da Vinci (1452 – 1519) Leonardo Da Vinci is a famous Italian painter; he was also an engineer, a geologist,a scientist, an anatomist , an architect, and a writer. …

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Who Invented Phones?

In the year 1875, The English electric engineer Willoughby Smith (1828-1891) reached to the photoconductivity of the element selenium. Which led to the first photoelectric cells, as Smith discovered while using selenium in an experiment that the conductivity of the selenium decreases when illumunation is available. In the year 1876, Alexander Graham Bell (1847-1922) succeeded …

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The History Of The Invention Of The Calculators?

Calculations are an easy task for some people, but for the majority of people it is not that easy. The problem of counting has appeared when numbers appeared. The Abacus is considered a primitive calculator, the first abacus was the Sumerian abacus more than 4500 years ago. Then it was followed by the Egyptian abacus …

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Who Discovered Electromagnetism?

Electromagnetism is one of the great powers that human use everyday in several uses. In the year 1812, Michael Faraday (1791-1867) the English chemist and physicist was able to reach for the fact of the electromagnetic field. In the year 1820, Hans Christian Ørsted (1777-1851) the Danish chemist and physicist was able to reach for …

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